Research and documentation scope
Educational laboratory information only. No medical advice, dosing, injection, administration or personal-use guidance.
Identity and issuer warnings
- No legal laboratory name or address.
- No unique report number.
- No client or submitter identity.
- Compound shown only as a nickname.
- No laboratory sample ID.
Batch and date warnings
- No batch or lot number.
- Code does not match the container.
- Identical report reused across different lots.
- Impossible or contradictory receipt, test and issue dates.
- No authorised signatory or version control.
Method and result warnings
- Purity percentage with no named method.
- Cropped or unlabelled chromatogram.
- No peak table or integration detail.
- “Identity confirmed” without expected and observed evidence.
- Specifications presented as though they were measured results.
How to write a fair conclusion
Do not leap from an incomplete document to an accusation. State the precise limit: “the document does not identify the tested batch” or “the chromatogram cannot be interpreted because the axes and peak table are absent.” Missing proof and proof of failure are different conclusions.
Frequently asked questions
Does a warning sign prove a COA is fake?
No. It identifies something that cannot be verified and may justify asking the issuer for clarification.
Who can authenticate a laboratory report?
The issuing laboratory is the authoritative source for confirming its report number and contents.
Related external reading:
- ZENTRA batch verification recordsexternal · supplier educational page
Editorial reference only; not an endorsement.