Glossary
Cold chain
Also called Cold-chain shipping, Temperature-controlled shipping, Refrigerated transport
Keeping a product within a set temperature range at every step from maker to user: storage, shipping, and the trip home.
In more detail
The term comes from vaccines and food logistics. For refrigerated drugs the usual range is 2 to 8 C. Branded GLP-1 labels spell out their own limits: Ozempic pens go in the fridge before first use, and Zepbound may be kept unrefrigerated up to 30 C for up to 21 days.
Lyophilized research peptides usually ship without ice because the dry form tolerates short warm spells, according to most guides. Mixed solutions are a different story and should stay cold.
Why it matters
A vial left in a hot mailbox or car is the most common storage question people ask. See Peptide storage for the travel and shipping details.
Related terms
- Peptide stabilityHow long a peptide keeps its structure and strength. It depends on the molecule, whether it is dry or in solution, temperature, light and handling.
- LyophilizedFreeze-dried. The peptide is frozen and its water removed under vacuum, leaving a dry powder or cake in the vial that is mixed with liquid before use.
Peptides where this comes up
Sources
Each source is labeled by where the information comes from. How we label sources
- Reference workCold chain(opens in a new tab)
Wikipedia · checked
- RegulatoryOzempic (semaglutide) injection prescribing information(opens in a new tab)
FDA (Drugs@FDA) · checked
- RegulatoryZepbound (tirzepatide) injection prescribing information(opens in a new tab)
FDA (Drugs@FDA) · checked
- Competitor guidePeptide travel guide(opens in a new tab)
peptiq.io · checked
Updated