Independent · Accountable · Verifiable
Global Diagnostic Testing delivers fast, accurate purity and identity analysis with Certificates of Analysis your clients can verify themselves — no vendor ties, no black boxes.
Why labs and vendors choose us
Most results returned in 48-72 Hours — so your certificate is ready before your next shipment goes out.
Every COA is searchable by its COA ID. Your clients confirm any batch independently — instantly, on this site.
We hold no vendor affiliations. Independent analysis means results without bias — ever.
Certificate of Analysis lookup
Enter the COA ID / Number printed on your certificate to pull the verified record on file. When a signed PDF is available, you can download it directly.
Find the COA ID / Number in the top-right table of your certificate.
How it works
Complete the intake form, authorize payment, and ship your vials following our packaging guidelines.
Samples are tested by HPLC with UV detection coupled to mass spectrometry for purity and identity.
Your Certificate of Analysis is emailed and made searchable here by its unique COA ID.
Submit your samples for independent purity and identity analysis, or verify an existing certificate now.