The longest-running independent tester in this market, with a public verification portal that returns the lab's own copy of a report by number and key. The things we could not confirm are the corporate details: the site's legal pages are in Czech and the English pages do not print a registered company name or street address.
No registered company name or street address on the English pages we read; the terms-and-conditions document is published in Czech (its title is 'Všeobecné obchodní podmínky'), which is consistent with a Czech-based operation. Contact is by web form and an info@ address.source
Reports we have opened state ISO/IEC 17025; the website's about page describes 'state-of-the-art laboratory equipment' and 'over 10 years of experience' without naming an accreditation body or certificate number, and we have not been able to confirm a listing with a European accreditation body. We record the ISO wording as the lab's statement.source
Why it matters: ISO/IEC 17025 is the standard that accredits a laboratory's competence to run a specific test method, assessed by a third party (A2LA, ANAB, UKAS and the like) with a published scope. "ISO 9001", "GLP principles" and "certified" on a website are not the same thing. An unaccredited lab can do accurate work; it just cannot prove it to you the same way.
Enter the report/test number and the key printed on the certificate.
Open the lab's verification pageThe test that matters: does the lab's own system return the same report the vendor showed you, for the same lot that is on your vial? A PDF on a vendor's site is a claim. The lab's record is the evidence.
"Served by the lab" means the certificate we opened was returned by the lab's own verification system, not only hosted on the vendor's site. Every certificate is in the COA library.
On the evidence of its reports, yes: it is the most widely used independent tester in this market, every report carries a number and key, and the lab's own portal returns the report when you enter them. What we could not confirm is who owns it — the English site prints no company name or address.
Take the task number and the key printed on the report and enter them at verify.janoshik.com. The lab returns its copy; compare the compound, amount and date with the vendor's. A vendor that shows a Janoshik PDF but no number and key is showing you something you cannot check.
Its reports state ISO/IEC 17025. We could not find an accreditation body or certificate number on the website, so we record it as the lab's statement rather than something we confirmed.
Research use only. Compound Review scores vendors on documentation — laboratory certificates, lot records, pricing and company identity. Nothing on this page is guidance on human or veterinary use, dosing or health outcomes.