Why read this?
A COA is a certificate of analysis: a lab test report for a sample. JD BioWorks walks through the compound name, mg on the label, batch number, lab, dates, tests, and ways to check the report.
The useful distinction
Start by matching the report to the vial. Then check what each test actually measured. Is it the right compound? How pure is it? How many mg are present? Is it sterile? These are separate questions. A test cannot answer something it did not check.
The source includes a detailed table and matching checklist. Our seven-check beginner checklist gives you a shorter starting point.
“Conclusions must remain limited to the scope of the performed tests.”
— JD BioWorks Editorial Team, brief excerpt from the source article.
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