How to verify a research peptide COA: a 10-point checklist

Work through these in order. The first three items decide whether the document is about your material at all; the rest decide what it actually shows.

1. Lot match: the batch or lot number printed on the vial label is identical to the lot on the report. A cap color or product name is not a lot ID.
2. Issuing laboratory: the report names an independent laboratory (not only the seller) and gives enough detail to contact it.
3. Sample identity: the compound name and labeled quantity on the report match the vial (for example 10 mg, not a different size).
4. Dates: the sample-received and report dates are present and plausible for the lot you hold.
5. Purity method: purity is reported with its method, typically reversed-phase HPLC with UV detection, and the value is a number, not a range like 'above 98%' without data.
6. Chromatogram: a trace or integration table accompanies the purity figure so the main peak and impurities can be seen.
7. Identity confirmation: mass spectrometry (LC-MS or MALDI) confirms the molecular mass. HPLC purity alone does not prove which molecule is in the vial.
8. Measured quantity: the report states how much material was found (for example 10.04 mg) so under-filled vials can be spotted.
9. Additional screens, when claimed: endotoxin (LAL), sterility, or heavy-metal results only count if the report shows the method and result for that lot.
10. Traceability: the supplier can show the same report on request or through a lookup, and the image has not been cropped to remove the lot or lab fields.

Be cautious when the same COA image is reused across several sizes or products, when the lot field is blank or replaced with a color, when a purity figure is shown without any method, when the laboratory name cannot be found, or when the only document offered is a generic 'specification sheet' rather than a test result.

A high HPLC number without mass-spec identity data is incomplete. A report for a different quantity (a 5 mg test offered for a 10 mg vial) does not describe your vial.

Enter the lot number printed on your vial at vitalitychems.com/verify. If it matches a published report, the page shows the laboratory, report date, method, reported purity, measured quantity, and a link to the full certificate image. If it does not match, the page offers a request form for the exact lot report instead of substituting another lot.

Reports that identify a sample only by cap color are labeled as such on the testing page, because a color is not a unique, traceable lot identifier.

A certificate describes the tested sample on the test date. It does not establish suitability for any use outside qualified laboratory research, stability after shipping or reconstitution, or any biological effect. Keep the report with your lab records alongside the lot number, storage conditions, and receipt date.