COA Red Flag Checker
Answer 8 questions about a Certificate of Analysis and get an instant assessment. No data is collected or stored — this runs entirely in your browser.
Is the testing laboratory named?
The COA should identify the lab by name with contact information — not just "tested by an independent lab."
Does it have a unique report or reference number?
Labs assign unique identifiers to each report. This is how you verify the report is genuine.
Is there a batch or lot number?
The batch number ties the COA to a specific production run — it should match your product.
Does it include HPLC purity results?
HPLC measures how much of the sample is the target compound, reported as a percentage.
What is the reported HPLC purity?
Select the range that matches the purity percentage on the COA.
Does it include mass spectrometry (identity confirmation)?
Mass spec confirms the compound is what the label says. HPLC alone tells you purity — not identity.
Is the testing methodology stated?
A credible COA states how each test was performed — column type, gradient, detection wavelength for HPLC.
Is the test date within the last 12 months?
Peptides can degrade over time. A COA from years ago may not reflect current product quality.