How to Verify a Janoshik Test Report: Task Number and Unique Key

Janoshik is a testing laboratory that analyzes research peptides, among other materials, and its reports often reach buyers second-hand, as screenshots or PDFs posted by sellers. Every report Janoshik issues can be checked against the copy held in the laboratory's own system. The check takes a minute, but only if you have the right two identifiers, and a report that passes it proves less than many readers assume. We don't use Janoshik for our own lots (our certificates come from ILS Laboratories). This page is a lab-specific guide for anyone holding a Janoshik report.

What you need before you start

According to Janoshik's help center, a verifiable report carries two identifiers:

• a task number at the top of the report, and
• a unique key at the bottom.

If either is missing, the laboratory says the report cannot be verified, and it recommends asking the vendor for the full version with both. This is the first thing to look for. A cropped image showing only the results table, or a report with its footer trimmed off, can't be checked at all, however good the numbers look.

The check, step by step

1. Go to janoshik.com yourself and open Verify in the site menu, which leads to janoshik.com/verification/. Don't use a verification link supplied by the seller.
2. Enter the task number and the unique key. The help center asks for the key in capital letters.
3. Or scan the QR code if the report has one. Check that the page it opens is on janoshik.com before you trust anything on it.
4. If the report is found, choose "Open report" to see the version stored in Janoshik's system.
5. Compare the stored report with the copy you were given. Janoshik's own rule is that a report is legitimate only if it matches the stored version. Any alteration means the copy you hold is not the lab's report.

Fields to compare, and how Janoshik reports them

• Task number. It must match exactly.
• Header details: client name, sample name, manufacturer and batch number. Read the section below on who writes them.
• Purity. For high-purity samples, Janoshik reports a band rather than an exact figure. 96%+ means between 96% and 98%, and 98%+ means between 98% and 100%. If a seller's graphic quotes a precise percentage such as "99.4%" and cites a Janoshik report, check what the stored report actually says.
• Quantity in mg. The help center states that the mg value is the measured amount of the tested substance, not the weight of the whole powder. Compare it with the amount on the vial label.
• Results for every analyte listed. A row missing from the copy you were shown is a difference too.

What a verified Janoshik report does not prove

A report that verifies is a real Janoshik report. Who sent the sample, and whether it came from the lot you're buying, are separate questions. Several features of how Janoshik works make them worth asking.

The header is written by the customer

Janoshik's help center explains that the customer fills in the report header details: client name, sample name, manufacturer and batch number. By default the client is shown as "Anonymous" and the sample name is the sample number. The customer can keep those defaults or enter anything they choose, and changes are possible for a period after the report is issued. A header reading "Manufacturer: X, Batch: Y" is therefore the submitter's description of the sample, not something the laboratory established.

One sample can produce more than one report

The person who placed a testing order can order additional copies of a report before testing finishes, and each additional report has its own header details. So one physical sample can lead to reports under different names. A verified report bearing a seller's name shows that Janoshik tested a sample described that way. It doesn't show that the sample came from that seller's stock, or from your lot.

Who sent the sample matters

A sample a vendor picks and posts itself is a different kind of evidence from one bought anonymously, through an ordinary order, by someone with no stake in the result. Janoshik also offers group testing, a shared payment option that lets several people contribute to a single test order. Because the client field can read "Anonymous", the report alone may not tell you which kind of sample you're looking at. Ask the seller who sent it, how it was obtained, and which batch it came from.

The public results page is a paid listing

Janoshik publishes reports on its Public Tests page when the customer pays for that service. A listing stays up for two months, and a further paid option places a report above others for a week. The page states that Janoshik does not endorse, sponsor or have any affiliation with the companies or products listed. A prominent public listing is a purchased placement, not a ranking by the lab. A report's absence from the page tells you nothing, either.

Accreditation

Janoshik's About page describes it as an independent testing laboratory. We did not find any accreditation statement on the Janoshik pages we reviewed. If a seller describes a Janoshik report as accredited, ask for the accreditation body and the certificate number, and confirm them with that body. What third-party testing actually means explains why the distinction matters.

If the report doesn't verify

Re-enter both identifiers, with the key in capitals. If it still fails, ask the seller for the full report as issued, with the task number at the top and the unique key at the bottom. A seller who can't supply a version that verifies is giving you the answer. That finding ranks at the top of COA red flags.

The general method

The steps here are Janoshik's version of a workflow that applies to any laboratory: reach the lab independently, use its own lookup, and compare the stored record with your copy field by field. The vendor-neutral version is how to verify any COA with the issuing laboratory, and how to read a COA covers what the results mean once you have confirmed them.

For laboratory research use only — not for human or veterinary use.