Certificate of analysis (COA)

A certificate of analysis is the laboratory's own document. An independent laboratory receives a sample identified by a batch, lot or sample number, runs the requested tests and issues a report with the results, the methods, the date and the lab's identity. The report belongs to that sample alone.

For kratom, the ones linked from this store's lab-results pages name PharmLabs San Diego, accreditation "ISO/IEC 17025:2017 Acc. 85368," a DEA registration, the client, a sample ID such as SD260424-137, received and reported dates of 2026-04-24, the panel run, the serving mass, and an alkaloid table with each analyte in percent, mg per gram, mg per serving and mg per unit beside its LOD and LOQ (NarcoBrands COAs).

For hemp, the potency section lists each cannabinoid by weight percentage and, for finished goods, by milligrams per unit or per container. A total THC line should combine delta-9 THC and THCa using the 0.877 factor USDA specifies (7 CFR 990.1). Contaminant sections report pass or fail against stated limits for solvents, metals, pesticides, microbes and mycotoxins.

Three things make a certificate credible. The lab holds ISO/IEC 17025 accreditation, which attests to its competence to produce valid results (ISO). The report prints the limit of detection and limit of quantitation, so a not-detected result means something. And the batch or lot number on the report matches the one on the package. Sellers with full programs tie each package to its lot report through a QR code or lot lookup (Super Speciosa lab lookup). The kratom reports linked here carry neither a lot number nor a contaminant panel, and the lab-results pages say so.

Carriers and the Postal Service rely on COAs for hemp. UPS requires one showing total THC at or below 0.3 percent for raw hemp from December 11, 2026 (UPS), and USPS requires mailers of hemp products to keep lab results and compliance records for at least 3 years (USPS Pub 52 453.37).

This store links each certificate at the laboratory's, supplier's or brand's own URL and never rehosts a PDF when the laboratory forbids reproduction of its reports for marketing.