Paramount Peptides vs Prime Peptides
Paramount Peptides scores higher, 76 to 59. The widest gap is track record. Same formula, same data fields, October 2026.
Factor by factor
| Factor | Paramount Peptides | Prime Peptides | Edge |
|---|---|---|---|
| Testing & certificates | 88 | 94 | Prime Peptides |
| Documentation depth | 65 | 63 | Paramount Peptides |
| Transparency | 100 | 68 | Paramount Peptides |
| Track record | 39 | 0 | Paramount Peptides |
| Catalog | 79 | 63 | Paramount Peptides |
| Pricing | 65 | 70 | Prime Peptides |
| Ordering & service | 45 | 45 | Even |
Fact sheets side by side
| Paramount Peptides | Prime Peptides | |
|---|---|---|
| Overall score | 76/100 (#3) | 59/100 (#21) |
| Status | Operating | FDA warning letter |
| Based in | Irvine, CA | Santa Barbara, CA |
| Founded | 2012 | Not stated |
| Third-party testing | Yes | Yes |
| Laboratories named | Janoshik | Freedom Diagnostics, Horizon Analytical, Janoshik Analytical, Bioviridian |
| Public certificates | Yes | Yes |
| Lot-specific certificates | Yes | Yes |
| Formats | vials, capsules, blends | vials, blends |
| Catalog size | ≈78 | ≈23 |
| BPC-157 5 mg listed price | — | — |
| Free shipping from | $500 | $150 |
| Payments | Not stated | Not stated |
| Ships internationally | No | No |
| Research-use disclaimer | Yes | Yes |
| FDA warning letter | None found | 2024-12-10 |
Read the full reviews: Paramount Peptides review · Prime Peptides review. Both suppliers sell materials labeled for laboratory research use only.
Both appear on: US-based suppliers · Suppliers with public certificates of analysis · Lot-level third-party testing · Suppliers with peptide blends.
The factor that separates them
The widest gap is track record (39 vs 0). Track record includes FDA letters; see how to check an FDA warning letter.
Related comparisons
Ascension Peptides vs Paramount Peptides · Core Peptides vs Paramount Peptides · Paramount Peptides vs Pure Peptide Labs
Frequently asked questions
Which is better, Paramount Peptides or Prime Peptides?
On our formula Paramount Peptides scores higher (76 vs 59). The largest gap is in track record (39 vs 0). "Better" depends on what you weight; both fact sheets are on this page.
Do both publish certificates of analysis?
Paramount Peptides: yes. Prime Peptides: yes. Lot-specific certificates — Paramount Peptides: yes; Prime Peptides: yes.
Which is cheaper?
We could not compare a like-for-like listing; price tiers are mid (Paramount Peptides) and mid (Prime Peptides).