Our running, independent ranking of research-peptide vendors. Scored on COAs, purity, sourcing, and reputation — no pay-to-win placement. Reviews are rolling out now.
"Reviewed" links to a full breakdown. "Coming soon" vendors are in our evaluation pipeline — join the list to get each verdict first.
| Vendor | Role | 3rd-party COA | |
|---|---|---|---|
| ZestyRat ResearchReviewed | Top overall pick | ✓ Every batch | Read review |
| Apollo Peptide SciencesComing soon | Core pick | Pending | Preview |
| GLP-1 Research LabComing soon | Core pick | Pending | Preview |
| Amino ClubComing soon | Core pick | Pending | Preview |
| Ascension PeptidesComing soon | Content-strong | Pending | Preview |
| BioLongevity LabsComing soon | Content-strong | Pending | Preview |
| Prime Performance PeptidesComing soon | Content-strong | Pending | Preview |
| Limitless Life NootropicsComing soon | Content-strong | Pending | Preview |
| Sports Technology LabsComing soon | Content-strong | Pending | Preview |
| Spartan PeptidesComing soon | Breadth | Pending | Preview |
| Midwest PeptideComing soon | Breadth | Pending | Preview |
| Onyx BiolabsComing soon | Breadth | Pending | Preview |
| Integrative PeptidesComing soon | Breadth | Pending | Preview |
| BioSynth PeptidesComing soon | Breadth | Pending | Preview |
Vendor scores and affiliate links populate as partnerships are approved and reviews publish. Products are for laboratory research only — not for human consumption.
Every vendor is judged on the same criteria — third-party batch COAs, purity testing, sourcing transparency, verifiable reputation, shipping, and support. Full details on our methodology page. We disclose every affiliate relationship per our policy.
We publish reviews to the list before the site. No spam, ever.