Peak Lab Peptides vs Zenith Biopeptides
Peak Lab Peptides has the higher PepFinder Score (8.7 vs 8.4). Both list 40 of the same peptides. Neither can pay to change the comparison.
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 Peak Lab PeptidesVisit store |  Zenith BiopeptidesVisit store | |
|---|---|---|
| PepFinder Score | 8.7 | 8.4 |
| Trustpilot | No score found | 4.5 Trustpilot(37) |
| Customer rating | 5.0/5 (1) | No reviews yet |
| Would order again | Needs 5+ reviews | Needs 5+ reviews |
| Product selection | 9.9/10 61 peptides · 184 products | 8.4/10 40 peptides · 54 products |
| Pricing and value | 6.9/10 5% cheaper than average per mg | 6.8/10 13% cheaper than average per mg |
| Delivery | 8.8/10 1-4 days | 8.5/10 Delivery times depend on the destination; most U.S. orders arrive in 3 business days with standard services. |
| Payment options | 8.5/10 CardVisaMastercardAmerican ExpressApple PayZelle | 8.5/10 CardVisaMastercardAmerican ExpressBank transferZelleCash App |
| Customer support | 10.0/10 EmailPhoneLive chatContact form | 8.5/10 EmailPhoneContact form |
| Website experience | Not rated yet | Not rated yet |
| Reliability | 8.8/10 | 9.5/10 |
| Packaging | Not rated yet | Not rated yet |
| Ships from | United States | United States |
| Ships to | United States | United States, Canada |
| Median price per mg | US$5.37 | US$5.00 |
| Reported delivered | No order reports | No order reports |
| Median delivery (reported) | Needs 3+ reports | Needs 3+ reports |
| Support replied (reported) | No support reports | No support reports |
The shaded cell is the higher rating in that row. Each rating's source (automated data, customer reviews or editorial) is shown on the supplier's profile.
Testing & transparency (optional detail)
| Peak Lab Peptides | Zenith Biopeptides | |
|---|---|---|
| Transparency Score | 7.5 | 8.2 |
| Testing transparency | 7.1 | 7.1 |
| Contact transparency | 10.0 | 10.0 |
| Documentation | 5.1 | 6.4 |
| Third-party testing stated | ✓ Yes | ✓ Yes |
| Publishes COAs | ✓ Yes | ✓ Yes |
| Batch-specific COAs | Not yet assessed | Not yet assessed |
| COAs reviewed by us | 1 | 1 |
| Verification | Verified | Not verified |
| Years tracked | 0.1 | 0.1 |
| Refund policy clear | Not yet assessed | Not yet assessed |
Full profiles: Peak Lab Peptides · Zenith Biopeptides · add more suppliers
Supplier and market information only; not medical advice.