Peptide Dosing Protocols
Table of Contents
View Supplies

Supplier Reviews

Peptide Supplier Reviews

We review research peptide suppliers on the evidence: how many batch COAs they publish, what independent labs found, how they ship and handle problems, and what they charge.

Reviewed Peptide Suppliers

Every review uses the same method. Open a review for the full evidence, or go straight to the vendor's discount code.

How We Review a Peptide Supplier

We check the same things for every vendor. Each review says where each fact comes from and when we checked it.

Published COAs

How many batch COAs (lab reports) the vendor posts, how recent they are, whether they match the batch on the vial, and whether they include endotoxin and sterility tests.

Independent Testing

What outside testers, such as Finnrick, found when they bought and tested the vendor's products.

COA Checks

Whether the lab named on a COA confirms that it issued the report.

Company Details

Whether the vendor lists a real address, a legal business name, and a clear way to reach them.

Shipping, Payment & Returns

Where the vendor ships, how you can pay, and what happens when an order arrives late, damaged, or wrong.

Prices

What the vendor charges for common peptides, with and without a discount code.

Other Suppliers With PDP Deal Pages

We haven't reviewed these vendors yet. Each link goes to the vendor's current discount code and checkout steps.

American Peptides Discount CodeCurrent code, checkout steps, and prices with the code.Amino Club Discount CodeCurrent code, checkout steps, and prices with the code.Dynotides Discount CodeCurrent code, checkout steps, and prices with the code.Peptira Discount CodeCurrent code, checkout steps, and prices with the code.EZ Peptides Discount CodeCurrent code, checkout steps, and prices with the code.Crystal Peptides Discount CodeCurrent code, checkout steps, and prices with the code.Ion Peptide Discount CodeCurrent code, checkout steps, and prices with the code.Midwest Peptide Discount CodeCurrent code, checkout steps, and prices with the code.Nura Peptide Discount CodeCurrent code, checkout steps, and prices with the code.Peptide Partners Discount CodeCurrent code, checkout steps, and prices with the code.Polaris Research Discount CodeCurrent code, checkout steps, and prices with the code.

Disclosures and Research-Use Notice

We don't test vials ourselves. Our reviews rely on the COAs each vendor publishes and on results from independent testers, and we name the source for each fact.

Some links are affiliate links. PDP may earn a commission from a qualifying order. This does not raise your price, and it does not change what we report, including failed tests.

Products from these suppliers are sold for laboratory research use. They are not approved treatments for people. PDP does not make or sell them. This page is not medical advice.

Peptide Supplier Review FAQ

Q1: How can you tell if a peptide supplier is legit?

Start with the paperwork. A legit supplier posts a COA for each batch, and the batch number on the COA matches the vial. Also look for independent test results, a real business name and address, and clear shipping and refund rules. No single sign proves a vendor is safe, so check several.

Q2: What should a peptide COA show?

A COA (certificate of analysis) is a lab report for one batch. It should name the lab, the compound, the batch number, and the test date. It should list purity and the amount in the vial, and ideally endotoxin results. Make sure the batch number matches your vial.

Q3: Are these suppliers' products approved for human use?

No. These suppliers sell research peptides for laboratory use only. They are not FDA-approved treatments. This page is an educational research reference and is not medical advice.

Q4: Do you earn a commission from these suppliers?

Yes. PDP may earn a commission when you buy through links on these pages. It does not raise your price, and it does not change what we report, including failed tests and weak spots.

Q5: Do you test the peptides yourself?

No. We don't send vials to labs ourselves. We review the COAs each vendor publishes and the results from independent testers, and we say where each fact comes from.

Trusted U.S./Canada pickPeptide Partners
Get Supplies