Certificate of Analysis · Research Reference
Understand the COA before you trust the peptide.
A calm, plain-language reference on certificate-of-analysis verification, third-party testing, and how to evaluate research peptides — so you can read the data yourself instead of taking anyone's word for it.
Why verification matters
A certificate is only as good as your ability to read it.
Anyone can claim purity. A real certificate of analysis ties a specific batch to an independent lab's measured result — but only if you know what the numbers mean, who issued them, and how to confirm they're genuine. This site exists to make that legible.
What a COA actually shows
Identity, purity, and the methods behind them — HPLC, mass spectrometry, and the batch number that links paper to product. Thorough certificates also report net content — the measured amount versus the label — and contaminant screening, such as a fentanyl panel.
How to verify a lab
Accreditation scope, third-party independence, and the difference between a marketing claim and a document you can trace.
How to read the literature
What a peptide is studied for, where the evidence is preclinical, and how to find the primary sources yourself.
How verification works
Three steps to evaluate any batch
Find the batch number
A genuine COA is tied to a specific batch or lot. No batch number, no traceability — start there.
Check the issuing lab
Confirm the test was run by an independent third-party lab, and that the lab's accreditation scope actually covers peptide identity and purity.
Read the result
Match the identity and purity figures to the methods listed (HPLC, MS), and confirm the document matches the batch you're evaluating. Check net content against the label — a well-run batch meets or exceeds it — and look for a contaminant screen.
Working through an actual certificate? Our free COA reader walkthrough and reconstitution calculator are research-use-only tools that take you line by line.
Peptide Library
Look up a research peptide
Each entry covers what the compound is, its classification, the areas it's studied and investigated for, its research history, and the primary literature — fully cited and plain-language. Dosing lives in its own section: the dosing guides.
Independent lab testing
Want to see real, published COAs?
Every product on the store is tested by an independent third-party lab, with a batch-linked certificate of analysis you can check yourself. The store is run by Midwest Compounds, who also publish this site — a connection we disclose openly.