How to verify a peptide COA and connect it to a batch

Separate authenticity from traceability

Authenticity concerns the document: did the named laboratory issue it, and do its contents agree with the laboratory’s record? Traceability concerns the material: what connects the tested sample to the lot being supplied? A successful document lookup answers only the questions that lookup actually covers.

The examples below come from reports already published in Aera’s lab-results archive. They are historical report examples, not a statement about current inventory or the lot in a particular order. The original laboratory and client names are retained. Ask Aera to confirm the applicable lot if you need documentation for supplied material.

Find the report identifiers

The TrustPointe Analytics report for BPC-157 batch 1305 provides a practical example. Its first page names Limitless Biotech as the client and TrustPointe Analytics LLC as the laboratory. The sample description refers to two vials. It includes both a client batch identifier and laboratory sample identifiers.

Copy identifiers exactly. A supplier batch, a laboratory sample ID and a report verification key perform different jobs. They are not interchangeable even when they appear on the same page.

Use the issuing laboratory’s verification route

This report directs readers to TrustPointe LIMS. The public page provides a COA verification field for the key printed on the PDF. Enter the key there and compare the returned record with the document you are checking. Do not treat the appearance of a QR code as proof on its own.

1. Open the laboratory’s website and confirm the domain.
2. Locate its report verification field.
3. Enter the exact report key.
4. Compare the sample identifiers, dates, methods and results.
5. If the lookup is unavailable or the records differ, contact the issuing laboratory through its official website.

The printed key above is provided so you can follow the process. This article does not represent a completed independent authentication of that report. A lookup service or report can change, so perform the check when you need it.

Match each result to the correct sample

Both columns belong to the same published document, but they contain separate results. Do not move a result from one column into the other, average them without explanation, or turn a result from two submitted samples into a claim that every vial was individually tested.

The report also contains retention-time and spectral identification rows. Those labels should be retained as written. A row labelled “ID by Spectral” should not be renamed “mass spectrometry” unless the method documentation establishes that interpretation.

Connect the report to the supplied material

Start with the lot or batch identifier on the material or its accompanying paperwork. Compare that identifier with the report and the supplier’s archive record. Where different internal identifiers are used, request the documented connection between them.

For example, finding batch 1305 in an archive is not evidence that a later order contains batch 1305. Likewise, a report for one compound or formulation should not be substituted for another simply because the names look similar. If the connection is unclear, ask Aera for clarification through the contact page.

Record what you confirmed and what remains unresolved. A report can support an assessment without answering every question about sample selection, custody, transport or storage.

Keep a useful verification record

Save the original PDF, the date you checked it, the exact identifiers and the relevant response from the laboratory or supplier. Keep a distinction between a document downloaded from a supplier and a record confirmed directly by the issuing laboratory.

For field-by-field interpretation, read how to read a peptide COA. For interpreting the two numerical rows above, read purity versus content.

Common questions