PEPTIDE
DUE DILIGENCE

PDD research tools

Check a peptide COA

Upload a PDF or image to draft a document report automatically. Check the extracted text against the original, answer the evidence questions, and download a report with unresolved items.

Files are read in your browser and are not uploaded to PDD. OCR can misread values. The draft does not authenticate the COA, confirm it with the lab, test the material, or establish safety or suitability. Research-use context only; no human or veterinary use.

Your document

Keep the source trail

Record the supplier lot, the laboratory report number, and where you independently confirmed the report in your notes below. A QR code on the PDF alone is not independent confirmation.

Printable COA checklist

Review the evidence

Use the extracted fields as a starting point, then answer from the original report and independently checked records. Leave uncertain items unconfirmed.

Lot linkage

01 / Lot linkage

Does the report's lot or sample ID match the offered lot?

Compare the supplier listing or package with the report, including any documented sample-to-lot link.

Laboratory confirmation

02 / Laboratory confirmation

Did you confirm this report directly with the named laboratory?

Use a lab website or contact you found independently, not only a QR code or supplier-provided link.

Identity method

03 / Identity method

Does the report identify the compound with a stated analytical method and result?

A purity percentage alone does not establish molecular identity; look for a suitable identity method such as mass spectrometry.

Purity method

04 / Purity method

Is a purity result shown with its method and supporting data?

Record what the method measures. HPLC area percentage is not automatically the amount of peptide in a vial.

Quantity claim

05 / Quantity claim

If an amount is advertised, is that amount supported by a distinct measured result?

If no amount is claimed, select Cannot determine and note that it was not assessed.

Report traceability

06 / Report traceability

Are report number, test date, and issuing laboratory identifiable?

Check that dates and identifiers are legible and consistent across pages.

Additional claims

07 / Additional claims

Are any sterility, endotoxin, or stability claims backed by tests for those attributes?

A purity or identity test does not establish these separate attributes. Select Cannot determine if none are claimed.