British research laboratory supplier • Same-day UK dispatch before 14:00 • Independently purity tested • Tracked next-day delivery • For research use onlyBritish research laboratory supplier • Same-day UK dispatch before 14:00 • Independently purity tested • Tracked next-day delivery • For research use onlyBritish research laboratory supplier • Same-day UK dispatch before 14:00 • Independently purity tested • Tracked next-day delivery • For research use onlyBritish research laboratory supplier • Same-day UK dispatch before 14:00 • Independently purity tested • Tracked next-day delivery • For research use onlyBritish research laboratory supplier • Same-day UK dispatch before 14:00 • Independently purity tested • Tracked next-day delivery • For research use onlyBritish research laboratory supplier • Same-day UK dispatch before 14:00 • Independently purity tested • Tracked next-day delivery • For research use only
// Research Blog

Peptide research, plainly written.

Research-use-only literature reviews, lab-practice notes and quality guides — curated by the Peptigen Labs research desk.

Peptide Chemistry Featured 15 Jun 2026 6 min

Peptide disulfide bond folding: oxidation chemistry and analytical confirmation

Disulfide bridge formation is critical to peptide structure. This article reviews oxidation chemistry, folding kinetics and analytical methods for confirmation.

Read article
Lab Practice·6 min

Setting up a peptide research laboratory in the UK

A practical guide to establishing a compliant peptide research laboratory in the UK: essential equipment, consumables, and supplier evaluation criteria.

14 Jun 2026Read
Research Methods·6 min

Bradford BCA peptide assay: common measurement errors

Bradford and BCA assays are widely adopted for peptide concentration quantification in research. This article examines frequent pitfalls and best practice in assay selection and interpretation.

14 Jun 2026Read
Receptor Science·6 min

Selank and Semax neuropeptide research in Russian neuroscience literature

Selank and Semax neuropeptide research has a substantial foundation in Russian neuroscience publications. This article surveys receptor-binding and neurochemical studies from the peer-reviewed literature.

13 Jun 2026Read
Peptide Chemistry·6 min

Solid-phase versus solution-phase peptide synthesis

A comparative examination of solid-phase and solution-phase peptide synthesis methodologies, their operational principles, and research applications.

13 Jun 2026Read
Lab Practice·6 min

Reconstitution vehicle selection: acetic acid solutions for lipophilic peptides

Solubility and stability differ markedly between bacteriostatic water and acetic acid vehicles. This article examines solvent choice for hydrophobic research peptides.

13 Jun 2026Read
Research Methods·7 min

Reversed-phase HPLC peptide purity: method development essentials

Develop robust reversed-phase HPLC methods for research peptide purity quantification. Learn column selection, mobile phase optimisation, and detection strategies.

12 Jun 2026Read
Receptor Science·6 min

Antimicrobial peptide research: LL-37 and KPV receptor science

Antimicrobial peptide research on LL-37 and KPV focuses on receptor binding pharmacology and cell signalling mechanisms in the published literature.

12 Jun 2026Read
Peptide Chemistry·6 min

PEGylated research peptide: modification chemistry and detection

PEGylated research peptide modifications alter molecular behaviour in vitro. This article explores polyethylene glycol conjugation chemistry and analytical characterisation methods.

12 Jun 2026Read
Lab Practice·6 min

Research peptide storage UK lab: refrigeration protocols on receipt

Essential refrigeration and ambient-transit practices for maintaining research peptide integrity upon arrival at UK laboratories.

11 Jun 2026Read
Research Methods·6 min

ELISA vs western blot for peptide receptor characterisation

Comparing ELISA and western blot methodologies for investigating peptide receptor interactions in research laboratory contexts.

11 Jun 2026Read
Receptor Science·6 min

Growth hormone secretagogue receptor: ligand binding in research

The growth hormone secretagogue receptor family represents a distinct ghrelin-receptor lineage central to neuroendocrine research. Explore receptor pharmacology, in vitro binding assays and published literature on GHSR agonists.

11 Jun 2026Read
Peptide Chemistry·6 min

Peptide acetylation amidation: end-group chemistry in research

N-terminal acetylation and C-terminal amidation alter peptide properties significantly. Understanding end-group chemistry is essential for reproducible research.

10 Jun 2026Read
Lab Practice·6 min

Peptide Certificate of Analysis: The Foundation of Reproducible Research

A Certificate of Analysis underpins research integrity. Learn what CoA documentation must contain and why it matters for experimental validity.

10 Jun 2026Read
Research Methods·6 min

Peptide UV-Vis quantification: extinction coefficients and concentration estimates

UV-Vis spectrophotometry is a rapid, non-destructive method for estimating peptide concentration in research laboratory settings. This article explores extinction coefficients, their calculation and practical application.

10 Jun 2026Read
Receptor Science·6 min

Melanocortin receptor research: literature on Melanotan-II binding

Melanocortin receptor research spans multiple isoforms and signalling pathways. This article reviews the published literature on Melanotan-II receptor pharmacology.

09 Jun 2026Read
Peptide Chemistry·6 min

GHK-Cu copper peptide research: literature on binding and cellular mechanisms

GHK-Cu copper peptide research explores tripeptide–metal coordination in cell-biology assays. This review synthesises the published literature on binding kinetics and in vitro receptor pharmacology.

09 Jun 2026Read
Lab Practice·6 min

Research peptide batch documentation UK: establishing audit trails

Understanding chain of custody and batch documentation requirements for research peptide buyers in the UK. Compliance, traceability, and record-keeping essentials.

09 Jun 2026Read
Research Methods·6 min

LAL assay principles for research peptide endotoxin screening

Endotoxin testing via LAL assay is essential for peptide quality assurance. This article explains LAL methodology, result interpretation and significance for in vitro research.

08 Jun 2026Read
Receptor Science·6 min

DSIP peptide research: electrophysiology in the literature

DSIP peptide research in published electrophysiology explores neuronal activity modulation. This article examines receptor signalling mechanisms in vitro and in vivo spike recording.

08 Jun 2026Read
Peptide Chemistry·6 min

Fmoc solid-phase peptide synthesis: reagent purity and synthesis outcomes

Fmoc solid-phase peptide synthesis demands strict control of reagent purity to ensure consistent coupling efficiency and final peptide quality. Explore best-practice principles for research laboratories.

08 Jun 2026Read
Lab Practice·6 min

Peptide reconstitution acetic acid vs bacteriostatic water

Selecting the optimal reconstitution vehicle is critical for hydrophobic peptide research. This guide compares acetic acid and bacteriostatic water for laboratory preparation.

07 Jun 2026Read
Research Methods·6 min

Bradford BCA peptide assay: interpreting results in research contexts

Bradford and BCA assays remain widespread protein quantification tools in peptide research. Understanding their limitations and artefacts is essential for reliable workflow design.

07 Jun 2026Read
Receptor Science·6 min

MOTS-c mitochondrial peptide research: literature and signalling

MOTS-c mitochondrial peptide research explores receptor signalling, metabolic pathways and cellular bioenergetics in published literature. Scientific overview.

07 Jun 2026Read
Peptide Chemistry·6 min

PEGylated research peptide: pharmacokinetic properties and analytical signatures

PEGylated research peptide modifications extend plasma persistence in vitro. Explore polymer characterisation, mass-spectrometry signatures and published kinetic literature.

06 Jun 2026Read
Lab Practice·6 min

Evaluating UK Research Peptide Suppliers: Essential Quality Criteria

A practical framework for assessing UK research peptide supplier credentials, documentation standards and analytical transparency to ensure laboratory research integrity.

06 Jun 2026Read
Research Methods·6 min

Reversed-phase HPLC peptide purity: Method development for quantification

Develop robust reversed-phase HPLC methods for accurate research peptide purity quantification. Strategic approaches to column selection, gradient optimisation and peak resolution.

06 Jun 2026Read
Receptor Science·6 min

GIP and glucagon receptor families: structural homology in peptide research

GIP glucagon receptor peptides share evolutionary conservation across the secretin-like GPCR family. This review examines binding-site architecture and receptor selectivity in vitro.

05 Jun 2026Read
Peptide Chemistry·6 min

Peptide disulfide bond folding: oxidation states and analytical verification

Disulfide bridge formation in research peptides requires careful control of oxidation and pH. Learn how to confirm native folding through mass spectrometry and chromatographic analysis.

05 Jun 2026Read
Lab Practice·6 min

Research peptide storage UK lab: receipt protocols and transit stability

Best-practice guidance on receiving, unpacking and storing research peptides in UK laboratory settings, with emphasis on cold-chain integrity and ambient tolerance thresholds.

05 Jun 2026Read
Research Methods·6 min

Peptide receptor ELISA and western blot: selecting the right method

Comparing ELISA and western blot for peptide receptor characterisation in vitro. Key differences in throughput, specificity and quantification for research.

04 Jun 2026Read
Receptor Science·6 min

Epithalon research peptide: pineal neuroendocrine signalling

Epithalon research peptide is investigated in longevity science for pineal-gland neuroendocrine function. Literature review of receptor pharmacology.

04 Jun 2026Read
Peptide Chemistry·6 min

Cyclic Peptide Design Research: Conformation and Stability

Cyclic peptide design research explores backbone cyclisation, disulphide stapling and conformational constraint to improve peptide stability and receptor pharmacology in vitro.

04 Jun 2026Read
Lab Practice·6 min

Peptide Research Laboratory UK Setup: Infrastructure and Vendor Selection

Essential guidance on equipping a peptide research laboratory in the UK: infrastructure choices, consumables specification and supplier audit frameworks.

03 Jun 2026Read
Research Methods·6 min

Peptide Endotoxin Testing LAL: Principles and Interpretation

Limulus amebocyte lysate assay fundamentals for endotoxin quantification in research peptides. Understanding LAL principles, result interpretation and quality benchmarks.

03 Jun 2026Read
Receptor Science·6 min

NAD+ research peptide: sirtuin signalling and mitochondrial function

NAD+ research examines sirtuin-dependent signalling and mitochondrial metabolism in cell-line assays. Current literature investigates receptor pharmacology and metabolic pathways.

02 Jun 2026Read
Peptide Chemistry·6 min

GHK-Cu copper peptide research: Cell signalling mechanisms in vitro

An evidence-based review of GHK-Cu copper peptide research: what published literature reveals about receptor interactions and cellular mechanisms.

02 Jun 2026Read
Lab Practice·6 min

Lyophilised peptide storage: Environmental controls and shelf stability

Proper storage of lyophilised research peptides requires precise temperature, humidity and packaging protocols to preserve integrity throughout shelf life.

02 Jun 2026Read
Research Methods·6 min

Peptide UV-Vis quantification: extinction coefficients and concentration estimates

A methodological overview of UV-Vis spectroscopy for peptide quantification, extinction coefficient selection and concentration determination in research applications.

01 Jun 2026Read
Receptor Science·6 min

GLP-1 receptor research: biased agonism in signalling literature

GLP-1 receptor research reveals distinct signalling cascades activated by biased agonists. This review examines published pharmacology and receptor mechanism studies.

01 Jun 2026Read
Peptide Chemistry·6 min

PEGylated research peptide analytical signatures and kinetic profiling

PEGylated research peptides exhibit distinct analytical and pharmacokinetic signatures in vitro. Explore polymer-peptide conjugate characterisation, separation methods and receptor studies.

01 Jun 2026Read
Lab Practice·6 min

UK research peptide supplier due-diligence checklist

A practical framework for evaluating UK research peptide suppliers: documentation, purity standards, traceability and regulatory compliance.

31 May 2026Read
Research Methods·6 min

Bradford BCA peptide assay: accuracy and reliability in research

Bradford and BCA assays remain essential for peptide concentration determination in research laboratories. Understanding their biochemical principles, limitations and practical considerations ensures robust quantification workflows.

31 May 2026Read
Receptor Science·6 min

GIP glucagon receptor peptides: comparative pharmacology in vitro

GIP glucagon receptor peptides exhibit distinct pharmacological profiles in receptor binding assays. A comparative literature review of their structural features and in vitro pharmacology.

31 May 2026Read
Peptide Chemistry·6 min

Counter-ion effects in peptide research materials

Peptide counter-ions significantly influence chromatographic resolution, mass spectrometry accuracy and long-term stability. Understanding TFA and acetate salt chemistry is essential for reproducible analytical work.

30 May 2026Read
Lab Practice·6 min

Reconstitution vehicles for hydrophobic peptides: solubility and stability

Selecting the optimal reconstitution vehicle—bacteriostatic water or acetic acid—determines peptide solubility, stability and assay accuracy in research.

30 May 2026Read
Research Methods·6 min

ELISA and western blot in peptide receptor research

ELISA and western blot offer distinct analytical approaches for characterising peptide-receptor binding in vitro. This guide compares their methodological foundations, applications and limitations.

30 May 2026Read
Receptor Science·6 min

Melanocortin receptor research: Melanotan-II in the literature

An overview of melanocortin receptor pharmacology and the published research literature investigating Melanotan-II receptor binding mechanisms.

29 May 2026Read
Peptide Chemistry·6 min

Cyclic peptide design research: stapling strategies and conformational control

Cyclic peptide design research employs stapling and cyclisation to constrain molecular geometry. This article explores how conformational restriction drives reproducible in vitro outcomes.

29 May 2026Read
Lab Practice·6 min

Setting up a peptide research laboratory in the UK

A practical overview of essential equipment, consumables and supplier evaluation for establishing a small peptide research laboratory in the UK.

29 May 2026Read
Research Methods·6 min

Reversed-phase HPLC peptide purity: method development essentials

Reversed-phase HPLC peptide purity quantification requires careful method development. This guide explores column selection, mobile-phase optimisation and detection strategy.

28 May 2026Read
Receptor Science·6 min

SLU-PP-332 ERR agonist research: metabolic signalling in recent literature

SLU-PP-332 ERR agonist research explores estrogen-related receptor pharmacology in mitochondrial metabolism. Recent literature review.

28 May 2026Read
Peptide Chemistry·7 min

GHK-Cu copper peptide research: receptor binding literature review

GHK-Cu copper peptide research encompasses copper coordination chemistry and in vitro cell-line receptor pharmacology. A summary of the published literature.

28 May 2026Read
Lab Practice·6 min

Peptide cold chain logistics UK: temperature excursion monitoring

Temperature excursion data and UK best practice for research peptide cold-chain logistics. Managing stability during storage and transport.

27 May 2026Read
Research Methods·6 min

Extinction coefficients in peptide spectroscopy

A technical review of aromatic absorption in peptide UV-Vis quantification, extinction coefficient calculation and spectrophotometric concentration estimates.

27 May 2026Read
Receptor Science·6 min

Selank Semax neuropeptide research in Russian literature

Examination of Selank and Semax neuropeptide research documented in Russian scientific literature, including receptor pharmacology and in vitro cell assays.

27 May 2026Read
Peptide Chemistry·6 min

PEGylated research peptide: modification chemistry and in vitro pharmacokinetic investigation

PEGylation extends peptide half-life in vitro through polymer conjugation. We examine modification chemistry, analytical characterisation and published receptor-binding literature.

26 May 2026Read
Lab Practice·6 min

Lyophilised peptide storage: environmental controls and container integrity

Proper storage of lyophilised peptides requires careful management of temperature, relative humidity and packaging integrity. This guide covers best-practice environmental controls for research materials.

26 May 2026Read
Research Methods·6 min

Bradford BCA peptide assay: common measurement errors and workflow optimisation

Bradford BCA peptide assay methods reveal systematic pitfalls in concentration determination. Understanding interference patterns and matrix effects improves research reproducibility.

25 May 2026Read
Receptor Science·6 min

Antimicrobial peptide research: LL-37 and KPV literature scope

Antimicrobial peptide research investigates LL-37 and KPV through receptor pharmacology, cell signalling and microbial interactions in vitro.

25 May 2026Read
Peptide Chemistry·6 min

Peptide acetylation amidation: end-group chemistry in research

N-terminal acetylation and C-terminal amidation shape peptide stability, receptor binding and analytical behaviour. Understanding end-group chemistry is essential for rigorous research.

25 May 2026Read
Peptide Chemistry·6 min

Research peptide lyophilisation: freeze-drying principles and long-term stability

Freeze-drying preserves research peptide integrity during storage and transport. This article explores the lyophilisation process, phase transitions and stability mechanisms.

25 May 2026Read
Lab Practice·6 min

Peptide reconstitution acetic acid vs bacteriostatic water

Selecting the optimal reconstitution vehicle is critical for hydrophobic peptide stability and solubility in research applications. This article examines the chemical and practical differences.

24 May 2026Read
Receptor Science·6 min

BPC-157 research peptide: cytoprotection and angiogenesis in vitro

BPC-157 research peptide exhibits cytoprotective properties in cell-line assays and angiogenic signalling in published literature. A review of in vitro receptor pharmacology.

24 May 2026Read
Research Methods·6 min

ELISA vs western blot for peptide receptor characterisation

Comparing ELISA and western blot methods for investigating peptide-receptor interactions in research. Key assay principles, sensitivity and experimental design.

23 May 2026Read
Peptide Chemistry·6 min

Solid-phase solution-phase peptide synthesis: comparative workflow notes

Solid-phase and solution-phase peptide synthesis each offer distinct procedural and analytical advantages for research. This article outlines the chemical and practical differences.

23 May 2026Read
Lab Practice·6 min

Research peptide batch documentation UK: chain of custody essentials

Robust batch documentation and chain of custody protocols ensure traceability and regulatory compliance for research peptide work in UK laboratories.

23 May 2026Read
Receptor Science·6 min

MOTS-c mitochondrial peptide research: receptor binding and metabolic signalling

MOTS-c mitochondrial peptide research explores receptor pharmacology and cellular energy metabolism in vitro. Published literature investigates binding mechanisms and signalling.

22 May 2026Read
Receptor Science·6 min

Thymosin beta-4 research peptide: actin binding and cytoskeletal signalling

Thymosin beta-4 research peptide exhibits actin-sequestering properties in published in vitro assays. Explore the receptor science and structural biology.

22 May 2026Read
Research Methods·6 min

Peptide UV-Vis quantification: extinction coefficients and concentration estimates

UV-Vis spectroscopy provides rapid, non-destructive quantification of research peptides. Understanding extinction coefficients and their calculation is essential for accurate concentration estimation.

22 May 2026Read
Peptide Chemistry·6 min

Peptide counter-ion effects: TFA vs acetate in analytical work

Counter-ion identity shapes peptide chromatography retention, mass spectrometry response and solution behaviour. We examine TFA and acetate salt forms in research practice.

21 May 2026Read
Lab Practice·7 min

Selecting a UK research peptide supplier: essential due-diligence criteria

A practical checklist for qualifying UK research peptide suppliers, from analytical standards to documentation and regulatory compliance.

21 May 2026Read
Receptor Science·6 min

GIP glucagon receptor peptides: family structure and binding pharmacology

Explore the structural relationships and in vitro receptor pharmacology of GIP and glucagon receptor peptides in comparative research contexts.

21 May 2026Read
Research Methods·6 min

MALDI vs ESI-MS for research peptide characterisation

MALDI and ESI represent distinct ionisation strategies in mass spectrometry. Understanding their strengths in peptide characterisation helps researchers select the optimal analytical platform.

20 May 2026Read
Peptide Chemistry·6 min

Cyclic peptide design research: stapling and conformational control

Cyclic peptide design research balances synthetic strategy with structural outcome. Explore stapling, cyclisation chemistry and conformational predictability.

20 May 2026Read
Lab Practice·6 min

Establishing a peptide research laboratory in the UK

A practical guide to laboratory infrastructure, equipment selection and supplier evaluation for UK-based peptide research teams.

20 May 2026Read
Receptor Science·6 min

NAD+ research peptide: sirtuins and mitochondrial signalling

NAD+ research explores sirtuin receptor pharmacology and mitochondrial metabolism signalling. We review what the published literature investigates.

19 May 2026Read
Research Methods·6 min

Bradford BCA peptide assay: comparative accuracy in research labs

Bradford and BCA assays remain standard protein quantification methods in peptide research. This article examines their principles, limitations and practical workflow considerations.

19 May 2026Read
Peptide Chemistry·6 min

GHK-Cu copper peptide research: what published assays reveal

GHK-Cu copper peptide research spans receptor binding, cell-line assays and in vitro signalling pathways. A review of the published literature.

19 May 2026Read
Lab Practice·6 min

Lyophilised peptide storage: Humidity control and packaging integrity

Long-term stability of lyophilised research peptides depends on rigorous control of moisture, temperature and container integrity. Evidence-based guidance for laboratory storage protocols.

18 May 2026Read
Receptor Science·6 min

Melanocortin receptor research: Melanotan-II and receptor pharmacology

An overview of melanocortin receptor pharmacology in the published literature, focusing on Melanotan-II as a research ligand and receptor binding mechanisms.

18 May 2026Read
Research Methods·6 min

Peptide endotoxin testing LAL: principles and interpretation

Understanding LAL endotoxin testing for research peptides: how the assay works, what results mean, and why purity matters in vitro.

18 May 2026Read
Peptide Chemistry·6 min

Research peptide reconstitution: solubility and diluent selection

Reconstitution stability depends on diluent choice, pH buffering and solubility chemistry. A practical guide to research peptide reconstitution protocols.

17 May 2026Read
Lab Practice·6 min

Certificate of Analysis: The Foundation of Reproducible Peptide Research

Rigorous Certificate of Analysis documentation underpins reproducible peptide research. Learn how CoA data ensures consistency, supports peer review and strengthens experimental rigour.

17 May 2026Read
Receptor Science·6 min

MOTS-c mitochondrial peptide research: signalling pathways in vitro

MOTS-c mitochondrial peptide research explores receptor binding and metabolic signalling in cell-based assays. Current literature investigates mechanistic pathways.

17 May 2026Read
Research Methods·6 min

Extinction coefficients in peptide spectroscopy: UV-Vis quantification methods

Understanding aromatic amino-acid absorption and extinction-coefficient calculation for accurate peptide UV-Vis quantification in laboratory research.

16 May 2026Read
Peptide Chemistry·6 min

Solid-phase versus solution-phase peptide synthesis

Comparative overview of solid-phase and solution-phase peptide synthesis methods, workflow considerations and analytical implications for research laboratories.

16 May 2026Read
Lab Practice·6 min

Research peptide batch documentation UK: regulatory essentials

Maintaining robust batch documentation and chain of custody is critical for research peptide integrity. Learn how UK labs meet compliance standards and protect experimental validity.

16 May 2026Read
Receptor Science·6 min

SLU-PP-332 ERR agonist research: metabolic signalling in vitro

SLU-PP-332 is a pan-ERR receptor agonist studied in metabolic research. This article reviews published literature on estrogen-related receptor pharmacology and mitochondrial biogenesis mechanisms.

15 May 2026Read
Research Methods·6 min

Reversed-phase HPLC peptide purity: method development essentials

Reversed-phase HPLC peptide purity quantification requires systematic method development. A guide to column selection, mobile phase optimisation and detection strategies.

15 May 2026Read
Peptide Chemistry·6 min

Peptide disulfide bond folding: oxidation chemistry and structural confirmation

Disulfide bond formation underpins peptide tertiary structure. This article explores oxidation chemistry, folding kinetics and mass-spectrometry confirmation methods.

15 May 2026Read
Lab Practice·6 min

Peptide Cold Chain Logistics UK: Temperature Excursion Management

Managing temperature excursions during peptide shipment is critical to research integrity. This guide covers best-practice cold-chain logistics for UK-based research laboratories.

14 May 2026Read
Receptor Science·6 min

Antimicrobial peptide research: LL-37 and KPV in the literature

Antimicrobial peptide research into LL-37 and KPV examines receptor signalling and cellular responses in vitro. A review of the published evidence.

14 May 2026Read
Research Methods·6 min

ELISA versus Western Blot: Selecting the Right Assay for Peptide–Receptor Characterisation

ELISA and western blot each offer distinct advantages for peptide–receptor interaction studies. This article compares their methodological strengths, sensitivity profiles and data interpretation in research settings.

14 May 2026Read
Peptide Chemistry·6 min

GHK-Cu copper peptide research: receptor binding in cell models

GHK-Cu copper peptide research investigates in vitro receptor signalling and collagen expression in cell-line models. A review of the peer-reviewed literature.

13 May 2026Read
Lab Practice·6 min

Lyophilised Peptide Storage: Temperature, Humidity and Packaging

Proper storage of lyophilised research peptides requires controlled temperature, humidity and packaging to maintain stability and integrity throughout their shelf life.

13 May 2026Read
Receptor Science·6 min

Thymosin Beta-4 TB-500 research peptide: cytoprotective signalling in vitro

Thymosin Beta-4 TB-500 research peptide investigates cytoprotective and angiogenic pathways in cell-line assays. Literature overview.

13 May 2026Read
Research Methods·6 min

Bradford and BCA assays for peptide concentration determination

Bradford and BCA assays remain foundational colorimetric methods for peptide concentration measurement, yet systematic errors frequently arise in research workflows. Understanding their chemical principles and common sources of variance improves result reliability.

12 May 2026Read
Peptide Chemistry·6 min

PEGylated research peptide: structure, modification and analytical characterisation

PEGylated research peptides offer distinct pharmacokinetic properties in literature models. Explore the chemistry of polyethylene glycol conjugation and detection methods.

12 May 2026Read
Lab Practice·6 min

UK Research Peptide Supplier: Due-Diligence Checklist

A practical framework for evaluating UK research peptide suppliers. Quality assurance, documentation standards, and verification protocols.

12 May 2026Read
Receptor Science·6 min

NAD+ Research Peptide: Sirtuin Signalling in Metabolic Science

NAD+ research peptide studies explore sirtuin activation and mitochondrial metabolism in cellular models. Review the published literature on NAD+ biochemistry.

11 May 2026Read
Research Methods·6 min

Peptide UV-Vis quantification: extinction coefficients and concentration estimates

Absorbance spectroscopy enables rapid quantification of research peptides via aromatic residues. This article covers extinction coefficient calculation, wavelength selection and precision considerations.

11 May 2026Read
Peptide Chemistry·6 min

Cyclic peptide design research: conformation and stapling strategies

Cyclic peptide design research constrains backbone geometry to enhance receptor specificity and metabolic stability. Explore stapling, cyclisation chemistry and conformational outcomes.

11 May 2026Read
Lab Practice·6 min

Peptide Certificate of Analysis: Essential Documentation for Research Integrity

A comprehensive guide to Certificate of Analysis documentation in peptide research: why comprehensive analytical data is fundamental to reproducibility and scientific rigour.

10 May 2026Read
Receptor Science·6 min

DSIP peptide research: electrophysiology in the published literature

DSIP peptide research explores neuropeptide signalling through electrophysiological methods. Published literature describes receptor mechanisms in vitro.

10 May 2026Read
Research Methods·6 min

Peptide endotoxin testing LAL: principles and interpretation

Understanding LAL endotoxin assays for research peptides: how the test works, what results mean, and why bacterial lipopolysaccharide detection matters in laboratory practice.

10 May 2026Read
Peptide Chemistry·6 min

Fmoc solid-phase peptide synthesis: reagent purity and synthesis fidelity

High-fidelity Fmoc solid-phase peptide synthesis demands rigorous control of reagent identity and purity. This article examines the biochemical principles underlying synthesis success.

09 May 2026Read
Lab Practice·7 min

Setting Up a Peptide Research Laboratory in the UK

A practical overview of essential equipment, consumables and supplier assessment for establishing a compliant peptide research laboratory in the UK.

09 May 2026Read
Receptor Science·6 min

GIP glucagon receptor peptides: structural homology and in vitro pharmacology

GIP glucagon receptor peptides share evolutionary ancestry and convergent binding mechanisms. This article explores their receptor architecture and published in vitro research.

09 May 2026Read
Research Methods·6 min

ELISA and Western Blot for Peptide–Receptor Binding Studies

Comparing ELISA and western blot methodologies for investigating peptide–receptor interactions in research. Discover the technical strengths of each approach.

08 May 2026Read
Peptide Chemistry·6 min

Research Peptide Lyophilisation: The Science Behind Freeze-Drying

Lyophilisation preserves peptide structure and activity during storage. Explore the thermodynamic principles, process parameters and quality assurance standards.

08 May 2026Read
Lab Practice·6 min

Research peptide batch documentation UK: traceability and compliance

Essential guidance on maintaining chain of custody and batch documentation for research peptides in UK laboratories. Ensure regulatory compliance and data integrity.

08 May 2026Read
Receptor Science·6 min

Epithalon research peptide: pineal gland signalling in longevity science

Epithalon research peptide continues to attract interest in longevity science. This article surveys the published literature on pineal-gland peptide mechanisms and in vitro receptor pharmacology.

07 May 2026Read
Research Methods·6 min

Bradford BCA peptide assay: common pitfalls in research quantification

Bradford and BCA assays remain essential for peptide concentration determination in research, yet systematic errors arise from buffer interference and standard-peptide mismatch.

07 May 2026Read
Peptide Chemistry·6 min

Peptide counter-ion TFA acetate: impact on analytical reproducibility

Counter-ion selection in research peptides affects chromatographic resolution and mass-spectrometry calibration. Understanding TFA versus acetate salt behaviour improves analytical reliability.

07 May 2026Read
Lab Practice·6 min

Lyophilised peptide storage: environmental conditions and container integrity

Proper storage of lyophilised research peptides requires careful control of temperature, humidity and packaging. This article examines the chemistry and practical considerations.

06 May 2026Read
Receptor Science·8 min

Melanocortin receptors: published research on Melanotan-II

Melanotan-II and melanocortin receptor pharmacology in vitro. Overview of receptor binding studies and published literature on MC1R and MC4R signalling.

06 May 2026Read
Research Methods·8 min

Reversed-Phase HPLC Method Development for Peptide Purity Quantification

Guidance on designing robust reversed-phase HPLC methods for quantifying research peptide purity and characterising sample composition in the laboratory.

05 May 2026Read
Peptide Chemistry·8 min

Copper-binding tripeptides in cell-biology research

Examining the published literature on copper-binding tripeptides and their role in cell-biology research models, receptor pharmacology and in vitro systems.

05 May 2026Read
Receptor Science·8 min

Growth-hormone secretagogue receptor family in vitro research

Receptor pharmacology of GHSR-family peptides: how CJC-1295, Ipamorelin and Tesamorelin engage GHS-R1a in published vitro studies.

05 May 2026Read
Peptide Chemistry·8 min

Solubility and diluent selection for stable peptide reconstitution

Optimal diluent choice and reconstitution protocols are critical for maintaining peptide stability in vitro. This article explores solubility factors, bacteriostatic agents and best practice storage.

04 May 2026Read
Research Methods·8 min

Mass spectrometry for peptide identity verification in research

Mass spectrometry combined with HPLC separations offers robust verification of peptide identity and purity. This guide outlines current laboratory methods for qualitative and quantitative analysis.

04 May 2026Read
Receptor Science·8 min

Melanocortin receptors in Melanotan-II research literature

Melanotan-II peptide research examines melanocortin receptor pharmacology. Published studies focus on MC1R and MC4R binding kinetics and signalling pathways in vitro.

04 May 2026Read
Research Methods·8 min

Reversed-phase HPLC for peptide purity quantification

Reversed-phase HPLC remains the gold standard for research peptide purity assessment. This guide explores method development principles for reliable quantification.

04 May 2026Read
Research Methods·8 min

RP-HPLC method development for research peptide purity

Reversed-phase HPLC remains the gold standard for characterising research peptide purity. This guide explores method development principles for accurate quantification.

04 May 2026Read
Research Methods·8 min

Peptide mass spectrometry: interpreting m/z and isotope patterns

A guide to reading peptide mass spectra: understanding m/z ratios, charge states, and isotope envelopes in analytical research chemistry.

03 May 2026Read
Receptor Science·8 min

GLP-1 receptor signalling cascades and biased agonism

An examination of GLP-1 receptor signalling pathways and the literature on biased agonism in vitro. Current understanding of ligand-directed receptor pharmacology.

03 May 2026Read
Research Methods·8 min

ELISA vs Western Blot: Peptide-Receptor Interaction Characterisation

Comparative overview of ELISA and Western blot techniques for studying peptide-receptor binding in vitro research applications and assay design.

03 May 2026Read
Research·6 min

Retatrutide: A Triple-Agonist Peptide at the Centre of Modern Metabolic Research

Retatrutide (LY3437943) is one of the most extensively reviewed metabolic research peptides of the past two years. Here's what the published literature says.

12 Feb 2026Read
Research·7 min

GHK-Cu: Five Decades of Continuous Research Interest

First isolated from human plasma in 1973, GHK-Cu remains one of the most studied copper-binding tripeptides in molecular research literature.

05 Feb 2026Read
Science·5 min

What Is Lyophilisation? Why Most Research Peptides Ship Freeze-Dried

Lyophilisation — freeze-drying — is why your research peptide arrives as a dry cake rather than a liquid. Here's the chemistry behind that choice and why it matters.

22 Jan 2026Read
Quality·5 min

Reading a Certificate of Analysis: A Quick Guide for Researchers

A COA is the single most important quality document that ships with a research peptide. Here's what each section actually tells you.

15 Jan 2026Read
Lab Practice·4 min

Storing Research Peptides on Receipt — UK Lab Quick Reference

What to do the moment your research peptide arrives at the lab: how to inspect the vial, what counts as a problem, and where to put it next.

08 Jan 2026Read
Research·5 min

BPC-157: A Snapshot of Tissue-Repair Research Literature

BPC-157 is one of the most cited research pentadecapeptides in tissue-repair literature. A summary of where the published research currently sits.

01 Jan 2026Read
Lab Practice·4 min

Why UK-Based Sourcing Matters for Research Continuity

Lead times, customs friction and documentation gaps are silent productivity killers. Here's the case for UK-based research peptide supply.

20 Dec 2025Read
// Compliance

All blog content describes published research literature only. Nothing here constitutes medical, dosing, administration, therapeutic, veterinary or human-use guidance. Peptigen Labs supplies all peptides strictly for laboratory research use only.