Simple Peptide vs Atomik Labz
One of these vendors isn't ranked, so compare the individual facts below.
Checked Oct 21, 2026
| Attribute | Simple Peptidesimplepeptide.com | Atomik Labzatomiklabz.com |
|---|---|---|
| Method score | Not ranked (catalog is behind a login) | 50/100 |
| COA transparency (/40) | 40 | 0 |
| Independent tests (/25) | 15 | 20 |
| Regulatory record (/20) | 20 | 20 |
| Public COAs | Yes | Not confirmed |
| Lot-matched COAs | Yes | Not confirmed |
| Testing labs named | Freedom Diagnostics | None confirmed |
| Methods on COA | HPLC-UV with mass spectrometry, Sterility, Endotoxin, Net peptide content | None confirmed |
| Independent results | Finnrick: 28 of 47 classifiable tests passed across 9 peptides (rating 63%, #391 of 482). Latest test Oct 8, 2026. | Finnrick: 35 of 44 classifiable tests passed across 9 peptides (rating 69%, #317 of 482). Latest test Aug 12, 2026. |
| FDA / regulator record | None found | None found |
| Shipping | US only; orders before 2 PM ET ship same day by 2nd Day Air. Rates not published. | UPS/FedEx; free over $499 in the US. Shipping protection (from $5.99) is added automatically; without it, lost packages aren't covered. |
| Payment | Visa, Mastercard, American Express, Bank payment | Visa/Mastercard (under $990), Venmo, Cash App, Crypto (5% off) |
| Returns | 30-day refunds for unopened, unused products; buyer pays return shipping. | Refunds up to 30 days after ordering, with a 20% restocking fee on all returns and exchanges. |