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Our goal is to make laboratory documentation easier to understand. These guides explain common terms found on third-party Certificates of Analysis (COAs). They are educational explanations of laboratory reporting—not claims about a product's medical effects, safety, sterility, or suitability for human use.
A Certificate of Analysis records what a laboratory reports for a submitted sample. Start with the product/sample name and report or batch identifiers, then identify the test performed and the result actually reported. A COA should not be read as evidence for tests that are absent from the report.
Identity addresses whether the tested material matches the reported analyte. Purity describes the proportion represented by the target component under the stated analytical method. Content reports the measured amount. These answer different questions and should not be treated as interchangeable.
High-performance liquid chromatography (HPLC) is an analytical separation technique. When a report gives an HPLC purity percentage, read that value in the context of the laboratory's stated method and report; it does not automatically establish sterility, heavy-metal status, or every other quality attribute.
If a field says “No data,” we do not interpret that as a passing result. It means the report does not provide a result for that field. APEX leaves those disclosures visible rather than implying that an unreported test was performed.
BTLabs • Lot GN2605 • Tested 06/01/2026
HPLC purity: 99.6% • Potency: 10.3 mg (103%)
BTLabs • Lot GN2605 • Tested 06/01/2026
HPLC purity: 99.7% • Potency: 11 mg (109.5%)
BTLabs • Lot GN2605 • Tested 06/01/2026
HPLC purity: 99.5% • Potency: 11.2 mg (112%)
BTLabs • Lot GN2605 • Tested 06/01/2026
HPLC purity: 99.8%
Reported potency: BPC-157 6.4 mg; TB-500 6.8 mg
BTLabs • Lot GN2605 • Tested 06/01/2026
HPLC purity: 99.7%
Reported potency: GHK-Cu 54.1 mg; BPC-157 10.2 mg; TB-500 11.6 mg