How to Verify a Janoshik Lab Report Yourself

A certificate of analysis is only as good as your ability to check it. An image of a report can be edited, cropped, reused for a different lot, or borrowed from another seller entirely. The fix is simple: do not trust the copy you were shown — look the report up at the laboratory that issued it. This guide walks through doing that for a Janoshik Analytical report, the laboratory behind the results on our lab results page.

Why the laboratory’s copy is the one that counts

Independent testing laboratories keep their own record of every report they issue. When a laboratory offers public verification, anyone holding the report’s reference can open the original on the laboratory’s own website. If the figures there match the figures you were shown, the copy is genuine. If they differ, or the report cannot be found, the copy is not what it claims to be — however professional it looks.

Step 1: find the task number and the verification link

Every Janoshik report carries a task number, the laboratory’s reference for that submission. On our product pages and lab results page each report is listed with its task number and a Verify at Janoshik link that opens the laboratory’s own verification page for that report.

Before you click, check the destination. The link should open a page on Janoshik’s own domain, not a page hosted by the seller. A “verification” page that lives on the seller’s website verifies nothing.

Step 2: compare the key fields

With the laboratory’s copy open, compare it against the report the seller published. Work through these in order:

1. Task number. Identical on both.
2. Sample description. The compound and labelled amount should match the product being sold. A report for a 5 mg vial does not document a 10 mg product.
3. Batch or lot code. This is the link between the paper and the physical vial. It should match the lot the seller says is currently shipping, and ideally the lot printed on what you receive.
4. Dates. When the sample was received and when it was analysed. Very old reports are not wrong, but they describe old material.
5. Results. Every figure — content per vial, purity, and any separate tests such as endotoxin — should be the same to the last decimal place. Rounded or “tidied” numbers on the seller’s copy are a warning sign.

Step 3: read the client field honestly

The report names the client — whoever submitted the sample and paid for the test. In a normal supply chain that is often the manufacturer of the lot rather than the shop you are buying from. That is not a problem in itself; it is how most lots are tested before they are distributed. What matters is that the seller says so openly and that the lot code ties the report to the material being sold. We state on every product page that testing is commissioned by the manufacturer and that the laboratory names the manufacturer as its client.

Common problems verification exposes

• The report cannot be found. The task number does not exist, or the verification link points somewhere other than the laboratory.
• Figures that do not match. The seller’s copy shows a higher purity or content than the laboratory’s record.
• A report for a different product or amount. The same report reused across several listings.
• A lot mismatch. A genuine report, but for a lot that is no longer the one being shipped.
• Cropped reports. Images with the task number, client or dates cut off. There is usually a reason those fields are missing.

What verification does not tell you

Verification confirms that a report is real and unaltered. It does not tell you that the vial in your hands came from the tested lot — only the lot code can connect the two. And it does not turn a single test into a guarantee about every vial; that is why reports that assay several vials from one lot are more informative than a single figure. For what each number on the report means, see reading a certificate of analysis, how to read an HPLC chromatogram and how mass spectrometry confirms identity.

Materials supplied by BMS Labs are for laboratory research use only and are not for human or veterinary use.