Independent testing

Peptide Certificates of Analysis

Last updated: 23 October 2026

A Certificate of Analysis (COA) records laboratory results for the sample tested. Depending on the report, it can document identity, purity and quantity. We publish reports per product, with the laboratory's task number and verification link. A report does not establish the contents of every vial. Separate component reports do not certify a finished blend.

Why we publish everything

In a market where certificates are hidden, redacted, or self-issued, we do the opposite. This is the whole brand, not a badge.

An independent lab, namedEvery certificate is issued by Janoshik Analytical, not by us. We are the laboratory's customer, nothing more.
Verifiable at sourceEach result carries a task number you can enter in the lab's public database. Check it yourself; don't take our word for it.
Independent testing has begun. Each certificate publishes on this page as results return, product by product, with its SHA-256 checksum and a link to the laboratory's public verification database, so every result can be checked at source. Not sure what a certificate should contain, or how to check one? See how to verify a peptide supplier — the checklist we publish for buyers, including for use on us.

Who does the testing

Testing is performed by Janoshik Analytical, an independent third-party laboratory specialising in peptide analysis (HPLC and mass-spectrometry methods). We are a customer of the laboratory and nothing more — results are published as issued.

Certificates by product

Choose a product below to view its published sample result and original report. For the wider testing process, see sourcing and testing. If your product is not listed, use the missing-report guidance.

GLP-3-RT

Tested 2026-09-03 · report 222314

99.723% purity · 11.17 mg measured

Verify at Janoshik Analytical · View the original report

GLP-1 blind panel (semaglutide / tirzepatide / GLP-3-RT): identity confirmed as GLP-3-RT. Label 10 mg.

File checksum (SHA-256)e25ef47bad3e5587f2687cbf9ed212c9ddd5a8a6e587f4313842c44c8496b393

Lab supplies (such as bacteriostatic water and consumables) are not individually tested by us. Refer to the specific listing for the available manufacturer information; the peptide sample reports above do not certify these supplies.

How to read and verify a COA

How to read and verify a COA

  • Identity — Read the laboratory's reported result for the submitted sample. Keep the report's wording when describing it.
  • Purity — the chromatographic purity measured for the sample.
  • Quantity — Read the measured content for the tested sample separately from the amount in the product listing.
  • Verification — Use the laboratory's verification link and task number to compare the published report with the laboratory record. If that page cannot be accessed, the online verification remains incomplete.
  • SHA-256 checksum — a fingerprint of the certificate file itself. Hash the file you downloaded and compare it to the checksum shown next to the certificate; if they match, character for character, the document has not been altered.

A report describes the sample that was tested. It does not by itself establish the contents of every vial offered for sale. A report for one component also does not establish the composition or purity of a finished blend. Check the product's documentation status alongside its listing.

Verifying the SHA-256 checksum

Verifying the SHA-256 checksum

A SHA-256 checksum is a 64-character fingerprint calculated from the exact bytes of a file. Change a single character in the file and the checksum changes completely, so it lets you prove the certificate you hold is byte-for-byte the one we published, for comparison. When a certificate is published above, its checksum is shown beside it. Download the certificate, compute the hash on your own machine, and confirm the two strings match.

Windows (PowerShell):

Get-FileHash .\certificate.png -Algorithm SHA256

macOS / Linux (Terminal):

shasum -a 256 certificate.png

Compare the value it prints with the SHA-256 shown next to the certificate. A match confirms that your file is identical to the one we published. It does not establish the report’s origin or the contents of a vial; use the laboratory’s verification link to check the report at source. If the checksum differs, contact us before relying on the file.

Questions about peptide reports

Where is the BPC-157 certificate of analysis?

Open BPC-157 report 222316. Use its laboratory verification link in the report list to check the result at source. Compare its tested sample details with the BPC-157 product listing; the report is not a certificate for every vial.

What if my product or batch is not listed?

Do not substitute another product's report. Check the product listing and contact us with the product name, strength and any batch identifier on your vial; include your order number if available. Ask which documentation applies to that item. A missing report is not proof that a product has been independently tested.

Is purity the same as the amount in a vial?

No. Purity is reported as a percentage; measured quantity is reported separately in milligrams. Read both fields and the sample description in the original certificate. A high purity percentage alone does not tell you the amount in a vial.

Does one certificate cover a blend?

A component report does not certify a finished blend. Look for a report that identifies the submitted blend and states which components were measured. The supplier verification checklist explains how to review the available evidence.

Earlier certificates

Earlier certificates

Need an earlier certificate? Email research@powerfullypeptides.com with your order number and we will send it.