Research peptides in BaliFor research use only21+ only

Journal · Verification

Do not trust a screenshot: check the report at the lab

Enter the report's task number and unique key on Janoshik's verification page, then check that the batch there matches the lot on your vial.

By Published Last updated 3 min read

Uses the lab reports of the 11 tested lots on this site

Close-up of a laptop keyboard
Close-up of a laptop keyboard. Photo: Alexander-design, CC0, via Wikimedia Commons

Key takeaways

  • A certificate of analysis is the lab's record for one batch: tests, results, date and signature.
  • Janoshik keeps its own copy of every report. The task number and the unique key open it.
  • Finish by matching the batch on the lab's copy to the lot printed on your vial.

Anyone can edit a PDF, reuse a report from another lot or screenshot one that is real. The check is at the lab, not in the picture.

Why a picture is weak evidence

ICH Q7 describes a certificate of analysis as a document issued for one batch, listing each test and its result, dated and signed[1]. A screenshot of such a document can show a real report for another product, an old report for an earlier lot, or an edited one. The picture alone does not let you tell which.

The same guideline also covers certificates passed on by agents and brokers. They should name the laboratory that did the analysis and refer to the original certificate[1]. In other words, a reseller's document is only as good as the lab record behind it.

Three steps

  1. Get the task number and the key. Both are printed on the report: the task number at the top, the key at the bottom.
  2. Open the lab's copy yourself. Type both at janoshik.com/verification, scan the QR code on the report, or use the Check at Janoshik link under each report on BP.
  3. Match the batch to your vial. The batch on the lab's copy must be the lot printed on the vial in your hand.

Step 1: the task number and the key

Every Janoshik report carries a task number at the top and a unique key at the bottom (Figure 1). If a seller cannot give you the number for your lot, there is nothing to check. BP prints the task number and the key on every report page[2].

Top of the report

Task Number #137344

Bottom of the report

The unique key LS7XAYM8WLRJ
Figure 1. The two things you need, from the report for task #137344: the task number at the top and the unique key at the bottom. Source: Janoshik Analytical, from the original PDF in the COA library.

Step 2: open the lab's copy yourself

The report says "Verify this test at www.janoshik.com/verify/". On 16 Oct 2026 that address forwarded to a broken page. The working verification page was janoshik.com/verification, which asks for the task number and the unique key[3]. The QR code on the report opens the same copy directly, as does the Check at Janoshik link under each report on BP. Either way, what you see comes from the lab, not from the seller.

Compare the lab's copy with the file you were given: the results, the dates and the batch.

Step 3: match the batch to your vial

The batch on the lab's copy must be the lot printed on your vial. If they differ, the report is about another lot, however good its numbers. If any step fails, treat the contents of the vial as unconfirmed.

What this check does not do

It shows that the report exists at the lab and what it says. It says nothing about tests the lab did not run, and nothing about how a vial was stored after testing. Read the report for what it covers, and note what it leaves out. The step-by-step guide with a video

Check it on real reports. The COA library has the full lab reports for 11 lots, with the original PDFs and links to the lab's own copies. Open the COA library

Sources

  1. ICH. Q7: Good manufacturing practice guide for active pharmaceutical ingredients. Step 4 version, 10 November 2000. Section 11.4, Certificates of Analysis. database.ich.org (PDF)
  2. Bali Peptide Supply. COA library: every lab report for the lots sold on this site. Reports issued by Janoshik Analytical, with their task numbers, keys and original PDFs. balipeptidesupply.com/coa/
  3. Janoshik Analytical. Verification of test reports. Verification page (task number and unique key) and the lab's copies of BP's reports. janoshik.com/verification

Each source was read in its own document on 16 Oct 2026. Numbers about BP's lots come from the reports in the COA library.

How this article was made

Written by Bali Peptide Supply from the sources listed above, each read in its own document on 16 Oct 2026. Every number about our lots comes from the Janoshik Analytical reports in the COA library, read by the site build, not typed by hand. The lead photo is from Wikimedia Commons under a free licence.

BP sells research materials for laboratory use only. This article explains laboratory testing and lab reports. It is not medical advice and not instructions for use.

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