Best peptide vendors
Best by category
- Highest overall score
- Core Peptides83/100 on the full method.
- Most transparent COAs
- True Peptides40/40 for COA transparency.
- Best independent test record
- Atomik Labz80% of 44 public tests passed (Finnrick).
- Cheapest BPC-157 with lot-matched COAs
- Ascension Peptides$4.90/mg (10 mg for $49, sale).
Full ranking
| # | Vendor | Score | Public COAs | Lot-matched | Mass spec | Independent tests | FDA / regulator |
|---|---|---|---|---|---|---|---|
| 1 | Core Peptidescorepeptides.com | 83 | Yes | Yes | No | 71% pass · n=7 | None found |
| 2 | True Peptidestrue-peptides.com | 75 | Yes | Yes | Yes | none on file | None found |
| 3 | Penguin Peptidespenguinpeptides.com | 74 | Yes | Unknown | Unknown | 56% pass · n=9 | None found |
| 4 | Ascension Peptidesascensionpeptides.com | 70 | Yes | Yes | Yes | none on file | None found |
| 4 | Biotech Peptidesbiotechpeptides.com | 70 | Yes | Yes | Yes | none on file | Alert, link unconfirmed |
| 4 | Swiss Chemsswisschems.is | 70 | Yes | Yes | Yes | 40% pass · n=10 | Warning letter |
| 7 | DRYPtidesdryptides.com | 65 | Yes | No | Yes | none on file | None found |
| 8 | 99 Purity Peptides99puritypeptides.com | 60 | Yes | No | Yes | none on file | None found |
| 8 | Core Research Peptidescoreresearchpeptides.com | 60 | Yes | No | Yes | none on file | None found |
| 8 | Spartan Peptidesspartanpeptides.com | 60 | Yes | No | Yes | none on file | None found |
| 11 | Atomik Labzatomiklabz.com | 50 | Unknown | Unknown | Unknown | 80% pass · n=44 | None found |
Most points are lost on two lines: COAs that can't be matched to your lot, and fewer than five public independent tests, which scores zero. Open a vendor to see its line-by-line breakdown, sources and prices per mg.
DRYPtides ranks #7 of 11 (65/100). It's the vendor we plan to partner with. Read its review.
New lab results, restocks and price drops
Rankings move when new independent tests land. Get an email when they do.
Listed, not ranked
Their catalogs or prices sit behind a login, or we haven't reviewed them yet, so we can't verify what they sell. Their COA and test records are still shown.
| Vendor | Score | Public COAs | Lot-matched | Mass spec | Independent tests | FDA / regulator |
|---|---|---|---|---|---|---|
| Limitless Life (Limitless Biotech)limitlesslifenootropics.com | Not ranked: catalog is behind a login | Yes | Yes | No | 32% pass · n=22 | None found |
| Modern Aminosmodernaminos.com | Not ranked: catalog is behind a login | Yes | Yes | Yes | 83% pass · n=6 | None found |
| Peptide Partnerspeptide.partners | Not ranked: catalog not reviewed yet | Unknown | Unknown | Unknown | n=105 | Warning letter |
| Simple Peptidesimplepeptide.com | Not ranked: catalog is behind a login | Yes | Yes | Yes | 60% pass · n=47 | None found |
Questions
What is the best peptide vendor?
On our published method, Core Peptides scores highest as of Oct 21, 2026 (83/100). "Best" here means the most verifiable testing record: public, lot-matched COAs from a named independent lab, independent results, no recent FDA warning letter, and clear policies. It is not a statement about safety or effectiveness.
How are vendors ranked?
Each vendor gets up to 40 points for COA transparency, 25 for independent test results (only with at least five public tests), 20 for regulatory record and 15 for policy clarity. Only facts we verified in a primary source score. Price is shown but not scored.
Do you earn money from these rankings?
We're setting up an affiliate relationship with DRYPtides; no link on this site earns a commission yet. DRYPtides is scored by the same formula as everyone else and currently ranks #7 of 11. No vendor can pay for placement.