Janoshik Analytical is an independent lab in Prague, Czech Republic. It tests what is inside a vial. Any certificate it issues can be matched against the lab's own database, using two codes printed on the paper.
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Janoshik sells no peptides, and its public database says it has no tie to the companies or products listed. The legal entity, Janoshik s.r.o., joined the Czech register in October 2022. Its menu spans seven groups, peptides, steroids and SARMs among them. Mass spectrometry matches the molecule to the label by molecular weight. HPLC gives purity as a share of peak area. A third figure gives mg per vial, which catches an underfilled one. Purity says nothing about live microbes, so sterility is a separate add-on.
Sources: Janoshik's about, services and database pages, 2026 captures; the Czech company record; PMID 26719571 and PMID 39922152.
Prices are per test, and they move. The blind GLP-1 test showed 300 USD on a March 2026 product page capture and 360 USD on the July 2026 homepage. That is a fifth higher inside one year, so each figure carries its capture date. The peptide test averages 5 days. The sterility add-on averages 14, so ordering it nearly triples the wait. Rush work doubles the price for results within 2 working days. Post to Prague sits on top.
Sources: Janoshik product page and homepage captures, March and July 2026.
A Task number sits at the top of the certificate and a Unique key at the foot. The key is case sensitive. Type both into the lab's verification page, or search its public database. A QR code on the report resolves on the lab's own servers, not the seller's. A real report also shows the batch identifier, an HPLC trace and a mass spectrometry trace. Mass results carry a stated 5 percent error margin, so a small gap from the label may sit inside the lab's tolerance. A doctored certificate will not match the stored record.
Sources: the Janoshik verification page and public report database, captured August and July 2026.
Janoshik holds no ISO/IEC 17025 accreditation, and a US sender ships to Europe. The comparison sets three US labs beside it: Vanguard, accredited to ISO/IEC 17025:2017, MZ Biolabs, which is DEA licensed, and Titreon. All three quote cost by request, so no listed price can be set against Janoshik's. Peptides Vietnam states no affiliation with Janoshik and no pay for its profile.
Sources: an independent 2026 write-up on third-party testing labs; the labs' own sites; A2LA certificate 6377.01 for Vanguard Laboratory.
Is a report without a code worth anything? No. With no Task number and Unique key to enter, there is no stored record to compare against.
What does a purity figure not tell you? Whether the vial is sterile, or how the batch was made and stored. It grades only the sample the lab received.
Where are the dated prices and the lab-by-lab table? Each price is tied to its capture in the lab's full record, beside the side-by-side comparison. More bilingual guides and free calculators sit at Peptides Vietnam.
Sources: Janoshik's verification page, report database and pricing captures.