Learn peptide testing.
Everything here follows the same rules as our reports: sources named, data dated, limits stated. Where we compare laboratories — including the one we will compete with — we use only their published information, and we appear in our own comparisons marked pre-launch.
Comparison
Peptide testing labs compared (2026)
Factual comparison of peptide testing laboratories in 2026
Comparison
Janoshik alternatives (2026)
Real alternatives to Janoshik for peptide testing in 2026
Review
Janoshik review (2026): services, prices, verification
A factual 2026 review of Janoshik built from public sources
Prices
Janoshik prices explained (2026)
Janoshik's published 2026 prices
Guide
How to test peptides: the complete guide (2026)
How third-party peptide testing works in 2026
Guide
How to read a peptide CoA (2026)
What each line of a peptide certificate of analysis means
Guide
How much does peptide testing cost? (2026)
Peptide testing prices in 2026 across laboratories
Guide
How to verify a peptide CoA from any lab (2026)
How to check whether a peptide certificate of analysis is genuine
Iberian Analytical opens in Q1 2027 — from €99 per test, 48–72 h target, and every report verifiable. Nothing is sold on this site today. Leave an email and we will write once, when the laboratory starts issuing certificates.
Testing for a business? Apply for an associate account — a 24-month rate lock and priority scheduling.
Questions
72 questions, answered directly
One question per page, answered in the first paragraph — certificates, purity, quantification, shipping, laboratories and prices. See all 72 questions →
Is Janoshik legit? · What does 99% purity actually mean on a peptide test? · How do I blind-test a vendor? · Why does my CoA say presumptive identity? · How much does peptide testing cost? · Can I trust a lab that publishes results selectively?
By analyte
Testing pages, analyte by analyte
Method, reference parameters, CoA contents and price for every analyte on the tariff — plus blends, where every component is quantified separately.
GLP-1 & metabolic. Semaglutide · Tirzepatide · Retatrutide · Cagrilintide · Liraglutide · Survodutide · AOD-9604 · MOTS-c
Recovery & repair. BPC-157 · TB-500 / Thymosin β-4 fragment · GHK-Cu
GH axis. Ipamorelin · CJC-1295 DAC · CJC-1295 no-DAC (Mod GRF 1-29) · Sermorelin · Hexarelin · GHRP-2 · GHRP-6 · Tesamorelin
Nootropic & regulatory. Semax · Selank · DSIP · Epithalon · Thymosin α-1 · Pinealon
Sexual health & endocrine signalling. PT-141 (Bremelanotide) · Melanotan II · Oxytocin · Gonadorelin · Triptorelin
Specialty peptides. Kisspeptin-10 · KPV · LL-37 · VIP · SS-31 (Elamipretide) · ARA-290 (Cibinetide) · Humanin · FOXO4-DRI