Public registry
Verify a Certification
Every DWLCA certificate has an 8-digit number printed on the lab's reports and encoded in its QR seal. Type it here to see live status straight from the registry. Lookups work by certificate number only.
What the statuses mean
In Good Standing — certified, audit current, seal authorized.
Suspended — a finding or blind-sample failure is unresolved; seal use is paused.
Revoked / Expired — the lab may not claim DWLCA certification.
Number doesn't check out?
If a report shows the DWLCA seal but the number returns no record or a different lab, that is a misuse of the mark. Report it — we investigate every one.