Independent, third-party testing is the clearest signal of a trustworthy supplier.

Why third-party An in-house claim is just a claim. A COA from an independent lab is verifiable evidence of a batch's identity and purity.

What to look for Look for the testing method (e.g., HPLC for purity, MS for identity), the measured result, and a batch number that matches your material.

Our standard We publish COAs per batch so you can verify exactly what you received — no vague marketing claims, just documentation.