Identity, purity, and what a COA does and doesn't tell you.
US PEPTIDE LABS
Research Use Only
Laboratory vials photographed in close detail
DOCUMENTATION

What the paperwork actually says.

A certificate of analysis is the primary document behind any research compound. Here's what to look for.

•Identity — confirms the material is the compound named, typically by mass spectrometry.
•Purity — reported for a specific batch, usually by HPLC. A purity figure only means something attached to a lot number. A number on a website with no lot behind it is marketing.
•Lot number — ties the document to the physical material. Check it against the lot on the container you received.
•Date — tells you when the analysis was run.

Our position: purity is reported per batch COA, never as a blanket claim across a catalog. Review the document against the batch on hand.

Read the COA guide on our research hub
US Peptide Labs
[business address — pending]

FOR RESEARCH USE ONLY. NOT FOR HUMAN CONSUMPTION.
These materials are sold for laboratory research purposes only. They are not drugs, foods, cosmetics, or medical devices, and are not intended to diagnose, treat, cure, or prevent any disease.

Not affiliated with, endorsed by, or sponsored by Novo Nordisk or Eli Lilly.

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