Receiving a Research Peptide Shipment: What to Check on Arrival
The first few minutes after a shipment arrives are the point at which most correctable problems can still be caught. A short receiving routine is worth formalising.
Inspect before opening anything
Check the outer packaging for damage and the vials for cracks, compromised crimp seals or loose caps. Then look at the cake itself. A lyophilised peptide should be a white to off-white solid. Discolouration, or a cake that has collapsed into a glassy film or an obvious liquid, indicates the material has been exposed to moisture or heat in transit and should be raised before use.
A shrunken or partially detached cake is not by itself a fault — lyophilised cakes shift in transit — but a wet or melted appearance is.
Transit and temperature
Lyophilised peptides are considerably more robust in transit than solutions, which is the main reason they ship as powder. Brief exposure to ambient temperature during shipping is normal and is not the same as prolonged warm storage. The material should still go into refrigerated storage at 2–8 °C on arrival, without opening the vial — see our storage guidance.
Canadian shipping
We ship across Canada, with free shipping on Canadian orders over $200, and to the United States at a flat rate. Domestic Canadian transit avoids the customs step entirely, which removes the main source of unpredictable delay and of extended time at uncontrolled temperature — a practical argument for sourcing domestically when the compound is available from a Canadian supplier.
On the regulatory framing of these materials, see our note on the regulatory status of research peptides in Canada and on choosing a supplier.
Record what you received
Log the date of receipt, the compound, the quantity and the certificate you matched it against. When a result later looks anomalous, that record is what lets you rule the material in or out rather than repeating the work.
ExoLabz supplies compounds for laboratory research use only. Nothing on this page is medical advice or a suggestion of human or veterinary use. Certificates of analysis for each compound are published on this site.
