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.
Why this matters
Most research peptides are shipped lyophilised, which is more tolerant of brief transit than solution-state material. However, sustained exposure to high ambient temperature can still affect stability over time.
For UK domestic next-working-day shipments the in-transit window is short — typically under 24 hours — but it still pays to handle delivery with care and move the vial into refrigeration promptly.
On receipt
Inspect the outer packaging: the cardboard outer should be intact, with the insulating material undisturbed. Move the inner vial to refrigeration (2-8°C) in its original sealed packaging.
Confirm the SKU and batch on the vial match the dispatch note and any attached COA. If anything looks off, report it within 48 hours.
Long-term storage
Many laboratories store lyophilised peptides at -20°C for long-term archive, leaving working aliquots at 2-8°C. Avoid repeated freeze-thaw cycles where possible.
Reconstitution method, diluent and aliquoting strategy are decisions for the qualified researcher and outside the scope of Peptigen Labs guidance.
Researcher FAQs
Does Peptigen Labs ship in a temperature-controlled cold chain?
No. We ship lyophilised research peptides — which are dramatically more transit-tolerant than solution-state material — in protective insulated packaging suitable for UK next-working-day delivery at ambient temperature. On receipt, refrigerate at 2-8°C in the original sealed vial.
What temperature should I store my research peptide at?
Standard refrigeration at 2-8°C in the original sealed vial is the default. For long-term archive many laboratories transfer aliquots to -20°C in airtight conditions. Always cross-check the storage condition printed on the product page and the Certificate of Analysis for the specific batch.
How should I inspect my parcel on delivery?
Confirm the outer packaging is intact, the inner insulation is undisturbed, and the vial label SKU and batch number match the dispatch note and any accompanying COA. Report any visible damage to your supplier within 48 hours.
How long can a lyophilised research peptide tolerate room temperature?
Lyophilised peptide sealed under vacuum or inert atmosphere is engineered to tolerate the short room-temperature window of a UK next-working-day delivery without measurable degradation. Sustained ambient exposure over days is a different scenario and should be avoided — move to refrigeration on receipt.
This article describes published research literature only. It is not medical, dosing, administration, therapeutic, veterinary or human-use guidance. Peptigen Labs material is supplied strictly for laboratory research use only.