Sourcing & testing standard

Peptide sourcing and independent sample testing.

Published testing coverage and the limits of each report.

We publish the independent sample reports available for our products, with links to the laboratory. Testing coverage varies by product. A published report describes the submitted sample; it does not verify every vial or batch offered for sale.

Our sourcing standard

Our sourcing standard combines supplier checks with independent analysis. Current testing coverage is documented per product on our Certificates of Analysis page.

Independent analysis, documented per productWe commission independent analysis and publish reports as they become available. Published reports currently cover GLP-3-RT, GHK-Cu, BPC-157 and TB-500. A product without a published report must not be described as independently verified by us.
Identity, purity and content: all threeRead the identity, purity and measured content recorded in each available sample report. These findings apply to the sample tested. A purity result alone does not establish identity.
Verifiable at sourceUse each report's verification link to check it at the laboratory. Janoshik's verification form asks for both the task number and unique key printed on the report.
Check the documentationA report must be read alongside the product listing and its stated testing coverage. If the documentation does not answer your question, contact us before ordering.

What to check in supplier documentation

We also publish the method itself as a buyer’s checklist, written so you can run it on any supplier in this market — including us.

These checks help identify missing or inconsistent documentation. They are not a claim that every product or batch has an independent report:

The laboratories

Our testing is commissioned from established, independent analytical laboratories. We are their customer, never their author, and results publish exactly as issued.

Janoshik Analytical

An independent third-party laboratory specialising in peptide analysis by HPLC and mass spectrometry. Each published report includes a task number and verification link so you can check its authenticity at the laboratory.

Independent second lab

No independent second-laboratory analysis has been commissioned to date.

Independent testing has begun. Reports for GLP-3-RT, GHK-Cu, BPC-157 and TB-500 are published on our Certificates of Analysis page, with verification links to the laboratory.

Questions about sourcing and peptide testing

Which products have published independent reports?

Reports are available for GLP-3-RT, GHK-Cu, BPC-157 and TB-500. These are results for submitted samples, not confirmation that every vial or batch has been tested. Check the current report library for available documentation.

How do I verify a peptide Certificate of Analysis?

  1. Open the original report and note its laboratory, date, sample identification and task number.
  2. Follow its laboratory verification link. If using Janoshik's verification form, enter both the task number and unique key.
  3. Compare the laboratory record with the report, then compare the tested identity and sample details with the product listing. Do not assume the result covers another lot or a finished blend.

For the full documentation checklist, read how to verify a peptide supplier.

What if a product has no published report?

It must not be treated as independently verified by us. Ask about the specific product and available documentation through research support before ordering. A report for a different product or one component of a blend does not fill that gap.

How this protects you

Shop the range See the certificates

Questions about a specific certificate or supplier standard? Email research@powerfullypeptides.com or message us on WhatsApp. For laboratory research use only. Not for human consumption.