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Quality & testing

How to read a certificate of analysis

Every batch we ship has one, and most people scan the purity number and stop. Here’s what the other six sections tell you — and which two are worth checking before you order from anyone.

Every batch we ship has one, and most people scan the purity number and stop. Here’s what the other six sections tell you — and which two are worth checking before you order from anyone.

Batches with published certificates

Every product below links to its lot-specific COA, readable before you add anything to the cart.

Keep reading

Research Products Only

Our peptides are for laboratory research purposes only.

Research Tools Needed

Research tools may be required.
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