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HomeLearnVerification & TransparencyHow to Confirm Your Vial Matches Its Certificate (Lot Checks and QR Verification)

Guide · Evaluation

How to Confirm Your Vial Matches Its Certificate (Lot Checks and QR Verification)

Match a printed lot number to its certificate of analysis, verify it by QR, and archive the documentation in your laboratory records.

By Chris D.·Published August 29, 2026

The lot check, step by step

Before using a material, confirm that the lot number printed on the vial matches the lot number on the Certificate of Analysis. They must be identical — a COA for a different lot is not a valid characterization of the vial in front of you.

  • Read the lot number on the vial label.
  • Open the COA and confirm the lot numbers match.
  • Check identity, purity, and content figures on the COA.
  • Archive the certificate against your lab inventory record.

Verifying by QR

Scan the QR code on the certificate or vial to retrieve the batch record. Confirm that the record returned matches the lot on the physical label. This closes the loop between physical material and digital documentation.

When something does not match

If the lot does not match, the label is damaged, or the QR returns the wrong record, do not proceed with the material. Contact KAM Research with the lot number in hand; a batch inquiry resolves the discrepancy before it reaches your assay.

  • Damaged or illegible label.
  • Missing or unreadable QR code.
  • QR returns a different lot or no record.
  • COA figures that contradict the label.

Sources

Standards and primary documents cited for method and documentation context. They do not endorse KAM Research or any product.

  • 21 CFR 211.194 — Laboratory Records
  • ICH Q6B — Specifications: Test Procedures and Acceptance Criteria for Biotechnological/Biological Products
  • 21 CFR Part 11 — Electronic Records; Electronic Signatures
Open the COA library
How to read a COAKAM's quality programSupport: report a lot that does not match

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