Janoshik: certificates on file

Janoshik is printed as the issuing laboratory on 33 of the 415 public certificates of analysis in the Peptide Ranking index, 8 percent of the register, counting the spellings Janoshik, Janoshik Analytical as one laboratory. The certificates were published by 5 research peptide suppliers: Paramount Peptides (10), Prime Peptides (10), Atomik Labz (7), Evolve Peptides (4) and Nexaph (2). QSC, Swiss Chems, Verified Peptides also name the laboratory on their pages, but we could not open a certificate to record.

The documents cover 16 peptides, most often GLP-1 class listings (9), GLP-1/GIP dual class listings (5), BPC-157 (3). Dates printed on the certificates run from 2024-10-21 to 2026-06-01. 33 of 33 print a lot number and 14 state a purity figure; the methods named are HPLC. Lot numbers appear on certificates from Paramount Peptides, Prime Peptides, Atomik Labz, Evolve Peptides, Nexaph.

A certificate describes the sample the laboratory received, not every unit a supplier later sells, so the lot number is what ties the document to a vial. We record what the documents print; we do not confirm them with the laboratory, and this page makes no statement about the laboratory's accreditation. To verify a certificate, quote its report number to the laboratory directly and check any accreditation claim on the accreditation body's register. Background: what ISO/IEC 17025 accreditation means, how to read a certificate, lot-level vs sample testing.