Do you test your research peptides?

We require an independent third-party Certificate of Analysis for every lot before it is stocked, covering identity, purity and content. Certificates publish on our Certificates of Analysis page as each batch completes testing, and each one is verifiable at source by its laboratory task number.

Which laboratory issues your Certificates of Analysis?

Testing is performed by Janoshik Analytical, an independent third-party laboratory specialising in peptide analysis by HPLC and mass spectrometry. We are a customer of the laboratory and nothing more; every certificate carries a task number that can be checked in the lab's public results database.

What makes you reject a supplier?

Any recycled or self-issued certificate, a compound identity on the certificate that does not match the product, a missing lot number, or a result that cannot be independently verified. We have walked away from suppliers over exactly these, with no exceptions.

Where do you ship from?

Orders are dispatched tracked from Ireland, inside the EU single market, so orders within the EU cross no customs border. For laboratory research use only.

How We Source & Test Research Peptides

The research-peptide market runs on trust that is almost never earned: hidden certificates, self-issued numbers, and vials whose contents no one can check. Our whole model is the opposite: provable provenance, from the lot we buy to the vial you receive. This page is exactly how that works.

Our sourcing standard

Four rules a batch clears before it is ever listed. None of them is optional, and none of them depends on taking a supplier's word.

An independent COA per lot, firstBefore any stock is bought, the specific lot is sampled and sent to a third-party laboratory. No certificate, no order.

Identity, purity and content: all threeWe check the material is the named compound, its measured purity, and how much is actually in the vial. A purity number alone proves nothing if the identity is wrong.

Verifiable at sourceEvery certificate carries a laboratory task number you can enter in the lab's public database. You check it yourself; you never take our word.

We walk awayA supplier who fails any part of the check does not get an order, however good the price. We have done this, and we will keep doing it.

What gets a supplier rejected

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.

Most of the fraud in this market hides inside the paperwork. These are the red flags that end a supplier relationship before it starts, and every one is something we have actually turned down:

A recycled or self-issued certificate. A COA that is undated, unbranded, or reused across different lots is not evidence of anything. We require a fresh, lab-issued report for the exact lot.
An identity that doesn't match the product. We have seen a certificate headed as one compound while the identity line certified a completely different molecule. That supplier was declined on the spot.
No lot number to match. If the certificate can't be tied to the batch on the vial, it can't protect you. No lot, no listing.
A result that can't be verified at the lab. If a task number returns nothing in the laboratory's own database, the certificate is treated as if it does not exist.

The laboratories

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

Janoshik Analytical

An independent third-party laboratory specialising in peptide analysis by HPLC and mass spectrometry. Every certificate carries a task number verifiable in their public results database.

Independent second lab

Cross-checks and second opinions are commissioned from a separate accredited analytical lab, so no single laboratory is ever the only voice on a batch.

Independent testing is not yet published. No certificates have been issued yet. The first lots go to the laboratory once stock lands, and certificates publish on our Certificates of Analysis page as each batch completes, product by product, each one verifiable at source. We will publish the failures too: a batch that misses target appears there marked FAILED and is never sold.

How this protects you

Batch-matched to your vial:the lot number printed on your label matches the certificate for that exact batch.
Checkable, not claimed:you can independently confirm every published result at the laboratory, rather than trusting a marketing badge.
Traceable supply:lot-tracked from the sourced batch through to dispatch, tracked from inside the EU.
Honest by default:if we can't prove it, we don't print it. That is the entire point of the brand.

Shop the range See the certificates

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

How we source, and how we vet every supplier.

Our sourcing standard

What gets a supplier rejected

The laboratories

Janoshik Analytical

Independent second lab

How this protects you