Real, long-operating, community-trusted, and independently verifiable via a public batch-key lookup — but not accredited. Treat "no accreditation" as a known, disclosed limitation of the strongest lab in this space, not a red flag unique to Janoshik.
Janoshik Analytical is a Czech Republic-based peptide/research-compound testing lab, widely regarded as the community standard in the gray-market peptide space. Started informally around 2012–2013, formally registered as a company in Prague in 2022, now reportedly a ~30-person operation processing hundreds of tests daily.
Janoshik is NOT ISO/IEC 17025 accredited and operates outside the formal accreditation framework. It substitutes public batch-key verification and over a decade of consistent, community-scrutinized results for formal accreditation.
Every Janoshik COA carries a unique verification key checkable at public.janoshik.com. Long operating history and current formal Prague registration (2022) independently confirmed via search.
Could not personally complete a live batch-key lookup this session — public.janoshik.com is behind an active Cloudflare bot challenge that blocked both a plain fetch and an automated browser. Multiple independent, 2026-dated third-party sources describe the verification flow as currently functional.
A February 2026 data breach exposed Janoshik customer information — a real operational-security consideration for anyone submitting samples with personal details, separate from the question of whether the lab's test results themselves are trustworthy. Janoshik COAs are also a known impersonation target: a batch key that does not resolve on public.janoshik.com should be treated as fabricated regardless of how convincing the document looks. Chain of custody is vendor-controlled — Janoshik tests the sample it receives, which is not a guarantee the same batch is what ships to a buyer.
Verify a COA from Janoshik Analytical yourself: public.janoshik.com — not personally tested this cycle.
Last reviewed August 2, 2026 by Watchtower Peptides.