LearnHow to Read and Verify a Janoshik COA
Research overview
How to Read and Verify a Janoshik COA
What each line on a Janoshik test report means, how to check the unique key, and which of our lots have one.
Heads up: this is product info for lab and research use only. It isn't medical advice, and it doesn't diagnose, treat, cure, or prevent any disease.
Who Janoshik are
Janoshik Analytical is an independent lab that a lot of the peptide world uses for third-party testing. Anyone can send them a sample, and each finished test gets a public verification page. That last part is what makes their reports useful: you don't have to take a seller's PDF on trust, because you can check it against the lab's own copy.
For the general idea of what a certificate of analysis covers, start with How to read a COA. This page is the Janoshik-specific version.
What's on the report
A Janoshik test report is one page. From top to bottom you'll see:
- Task number, plus the dates testing was ordered and the sample arrived.
- Client, sample, manufacturer, and batch. The sample name is whatever the sender called it, and the batch line ties the report to one lot.
- Tests requested, for example a tesamorelin analysis.
- Results. Usually the measured amount of peptide in mg and a purity percentage. When two vials are tested you'll see two numbers, separated by a semicolon.
- Analysis date and a unique key printed at the bottom, along with a QR code.
How to verify one
Take the unique key from the bottom of the report and enter it at janoshik.com/verify, or scan the QR code. The lab's page should show the same report. If the task number, sample, amounts, or purity differ from the PDF you were given, the PDF has been changed. On our product pages we link the lab's verify page directly next to the PDF, so you can skip the typing.
A couple of other checks are worth a few seconds. Make sure the sample matches the product and size you're looking at. Check the date, since a report from years ago probably isn't the lot on the shelf now. And remember the measured amount can be a bit above or below the label fill without anything being wrong. Our Tesamorelin 10mg lot, for instance, measured about 12mg per vial.
Our Janoshik reports
These listings have a Janoshik report and verify link on the product page right now:
Some other listings, like KLOW, GLOW, and the BPC-157/TB-500 blend, were tested by a different third-party lab, and those reports sit on their product pages too. Every listing is third-party tested. When a product page has no PDF yet, it means we don't have the report for the lot we're shipping in hand, not that it wasn't tested.
Quick answers
How do I verify a Janoshik test?
Take the unique key printed at the bottom of the report and enter it at janoshik.com/verify, or scan the QR code. The lab's copy should match the PDF exactly. Our product pages link the verify page directly.
Why are there two numbers in the results?
When two vials from a batch are tested, Janoshik lists both results separated by a semicolon, for example two amounts in mg and two purity percentages.
Why does the amount differ from the label?
The label is the listed fill. The report shows what the lab measured in that vial, which can be a little above or below it.
Do all your products have a Janoshik report?
No. Every listing is third-party tested, but some lots were tested by a different lab, and we only post a report when we have one for the lot we're shipping.
Related listings
Nearby catalog cards for what this page covers.
This is product information, not medical advice, and not a prescription. Nothing here diagnoses, treats, cures, or prevents disease. Talk with a licensed clinician before using any peptide or booster.