How to verify a lab report
What a Janoshik certificate of analysis contains, how to check it on verify.janoshik.com, and the red flags.
What is in the report
Janoshik Analytical is an independent laboratory that tests samples sent in by its clients. The result is a certificate of analysis, usually one page. It contains:
- Purity by HPLC. High-performance liquid chromatography separates the sample into its parts. The purity figure is the share of what was detected that is the named compound. 99.8 % means 99.8 % of the detected material is that compound.
- Identity by mass spectrometry. The instrument weighs the molecule and confirms that it is what the label says.
- Content. The amount of compound found, in milligrams for a vial or in mg per ml for a solution such as a pen.
- Sometimes an endotoxin test, which looks for bacterial residues.
- A task number, a date, the client name, and a verification key.
How to check a report
- Find the verification key on the report. It is a 12-character code. Note the task number too.
- Open verify.janoshik.com and enter the key.
- Compare what the site shows with the PDF you were given: compound, date, task number, purity, content.
- If anything differs, or the key opens nothing, treat the PDF as unverified.
Public examples
These four reports are public. They are the only purity figures used on this site.
| Product | Lab and date | Result | Verification key |
|---|---|---|---|
| Retatrutide pen (batch 0426) | Janoshik task #153429, 25 Sep 2026 | 99.809 % purity (HPLC), 14.74 mg/ml | J7GIEWDX43JH |
| Retatrutide 10 mg vial | Janoshik, Jul 2026 | 99.729 % | LRRN65BUFAQD |
| GHK-Cu 100 mg | Janoshik, Jul 2026 | 99.795 % | VHXX2QSW3ZJ6 |
| MOTS-c 40 mg | Janoshik, Jul 2026 | 97.360 % | M9KE123NKDWV |
For other products, lab documentation is available from the supplier.
Red flags
- A client name or a logo that looks edited.
- A key that opens nothing on verify.janoshik.com.
- A report older than a year presented for a recent batch.
- A purity figure quoted without a verification key.
A report describes the sample the laboratory received. It does not describe any other container.
What this page is, and is not
This page explains what published studies found. That is all it is. It is not medical advice, and it is not instructions for using anything. Nothing here is meant to find, treat, cure or stop any illness. The compounds discussed on this site are not approved medicines in the EU or the UK. Research compounds are sold for laboratory use only, not for use in humans or animals. A study tells you what happened to the people in it. It does not tell you what would happen to you. Talk to a doctor. This page is published by AuraVia Research Ltd, which sells research compounds.