How to verify a Janoshik Analytical test report

Janoshik Analytical issues 2,964 of the certificates in our COA library, from 73 vendors. Its reports are simple: one page, a handful of identity fields, a measured amount, a purity figure and a key. That makes a genuine report easy to read, and it makes an edited one easy to produce. This guide shows how to look a report up, what each field means, what has to match, and how the PeptidePrices COA checker handles Janoshik reports when the laboratory itself cannot be queried automatically. For the laboratory’s background, accreditation and track record, read our Janoshik Analytical review.

How to verify

Verification page: janoshik.com/verification

1. Lab header. Janoshik’s logo and contact details (info@janoshik.com, www.janoshik.com). A genuine report names no other laboratory or address.
2. Task number. The order number after “Task Number”. Copy the digits, without the # sign.
3. Client. Who ordered the test. Here it is the vendor’s own website.
4. Sample. The product as submitted, with its labeled strength.
5. Manufacturer. The maker named for the sample. It can differ from the client.
6. Batch. The lot code that should match the vial label and the product page.

7. Compound and measured amount. The first row of the results table: what the laboratory found and how many mg.
8. Purity. The percentage of the analyzed material that is the target compound.
9. Analysis conducted. The date Janoshik ran the analysis. The two dates above it are only when the test was ordered and the sample received.
10. Unique key. The 12-character code in the grey box under the verification line. This report still prints the older janoshik.com/verify/ address; use janoshik.com/verification.

1. Copy the task number (box 2). It is at the top left of the report after “Task Number”. Copy the digits only, without the # sign.
2. Copy the unique key (box 10). It is in the box at the bottom of the report. A genuine key is exactly 12 characters, all capital letters and digits.
3. Open Janoshik’s verification page. Go to janoshik.com/verification. Older reports print janoshik.com/verify/ in the footer; that address did not work when we tested it on September 23, 2026. Janoshik’s site shows a Cloudflare browser check first. That check is normal and says nothing about the report.
4. Enter both values and click Verify. Put the task number in “Task number” and the key in “Unique key”, then click Open report.
5. Compare every field (boxes 3 to 9). Read Janoshik’s record against your copy line by line, using the checklist below.

Many vendors skip the form by linking the record directly or printing a QR code (the report above has one just over the results table); 350 of the 426 published reports in our collection come with a Janoshik record link. A genuine record lives at an address of the form verify.janoshik.com/tests/[task]-[sample]_[key]. Check the domain before you trust what opens. Janoshik’s own pages are on janoshik.com and its subdomains. Look-alike domains such as janoshiklabs.com and janoshik.online appeared in Google results for “janoshik” in October 2026; a page on any domain other than janoshik.com is not Janoshik’s record. Do not build a record address yourself from the product name, either. Use the QR code, the vendor’s link or the form.

What a Janoshik test report contains

A Janoshik report has two halves. The identity fields describe the sample as it was submitted. The results describe what the laboratory measured. Verification ties the two together: the task number and unique key open Janoshik’s own copy, so you can see whether anyone changed either half after the report was issued.

What each field should match

There are two comparisons to make, and they answer different questions.

A report can pass the first comparison and fail the second: a genuine report attached to a different strength or a different batch. PeptidePrices only shows a certificate on a price listing when the vendor, compound, strength and unit match exactly, and shows none when they do not.

Red flags for an edited Janoshik report

• Janoshik’s record disagrees with your copy. A different purity, amount, compound, batch or date under the same task number and key means the copy was edited. This is the only red flag that is conclusive on its own.
• The key is the wrong shape. Fewer or more than 12 characters, lowercase letters or punctuation. Genuine keys are 12 capital letters and digits.
• The verification box is cropped, blurred or covered. A report shared without its key cannot be checked. Ask for the full page.
• The QR code or link leaves janoshik.com. A QR code that opens a vendor page, a file host or a look-alike domain is not Janoshik’s record.
• One key, two sets of results. If two vendors publish the same task number and key with different numbers, at least one copy is fake.
• The batch is not on your vial. This does not make the report fake, but it means the report does not cover your product.

Some things look suspicious and are not. The Cloudflare check on janoshik.com is routine. A slow or unavailable lookup is unresolved, not a failure. A measured amount above the label is normal. Small differences in fonts or spacing between reports are weak evidence either way; the record lookup settles the question.

How our checker corroborates Janoshik reports

Most laboratories our checker supports publish a lookup it can query directly. Janoshik’s verification pages sit behind an interactive Cloudflare challenge, so the checker cannot ask Janoshik about a report, and we do not try to get around the challenge. Instead it compares a submitted report with Janoshik reports that vendors have already published themselves.

That collection currently holds 426 reports, each stored under its unique key, published by 13 vendors and analyzed between February 2024 to July 2026. We read 120 of them straight from Janoshik record links, transcribed 304 from published report images and retain a Janoshik record link for 350. If two vendors publish the same key with different results, both copies are kept and flagged rather than one overwriting the other. Right now no key holds conflicting copies.

When you paste a Janoshik record link or upload a report, the checker reads the task number, key, compound, measured amount, purity and batch, then looks for the same key. It requires the task number to match too, because in one case we reviewed, a single key appears on more than one task report. Purity and amount are compared to within 0.01, and compound names are matched loosely enough that a vendor’s abbreviation or codename for the same substance does not count as a difference. A pasted janoshik.com link is resolved from the collection instead of being fetched, since a fetch would only return the Cloudflare block. Four outcomes are possible:

The asymmetry is deliberate. A hit can only ever corroborate, because the matching copy came from a vendor rather than the laboratory. A conflict is close to proof of editing, because a genuine key identifies a single test. A miss proves nothing, because most Janoshik reports have never been published by a vendor we track. That is why the checker never labels a Janoshik report fake for being absent, and why the final word is always the lookup at janoshik.com/verification.

Janoshik reports in PeptidePrices data

Separately from the checker’s collection, the COA library holds 2,964 Janoshik certificates from 73 vendors. 2,441 of them have been matched to Janoshik’s own record of the same task number and key, with the vendor confirmed. The other 523 stay in the library, and each one shows its own lookup or attribution state.

On the price index, 638 listings (a vendor’s specific compound and strength) show a Janoshik report. Of those, 593 across 46 vendors carry a report matched to Janoshik’s record. 20 carry a matched report whose printed client does not clearly identify the vendor, 13 could not be looked up when checked, and 12 have only had the file itself reviewed. None is in a conflict state. The vendors with the most verified Janoshik listings are:

• Nexaph54 verified listings
• ZestyRat Research48 verified listings
• Eppix Labs47 verified listings
• CertaPeptides46 verified listings
• Ameano Peptides44 verified listings
• Omega Peptides27 verified listings

Each profile shows the matched certificate beside the listing it covers, with the task number and key kept copyable so you can repeat the lookup yourself.

What a verified report does and does not prove

A report that matches Janoshik’s record proves that Janoshik tested the sample it describes and recorded those results. It does not prove that your vial came from that sample. The batch match is what connects the two, and the client chose which sample to send. For a laboratory-neutral checklist that covers other issuers, see how to verify a peptide COA. To compare issuers, see the peptide testing laboratory directory, or run any report through the COA checker.