Extreme Peptides vs Pure Peptide Labs
Pure Peptide Labs scores higher, 74 to 44. The widest gap is documentation depth. Same formula, same data fields, October 2026.
Factor by factor
| Factor | Extreme Peptides | Pure Peptide Labs | Edge |
|---|---|---|---|
| Testing & certificates | 28 | 89 | Pure Peptide Labs |
| Documentation depth | 0 | 83 | Pure Peptide Labs |
| Transparency | 72 | 86 | Pure Peptide Labs |
| Track record | 57 | 19 | Extreme Peptides |
| Catalog | 46 | 71 | Pure Peptide Labs |
| Pricing | 69 | 50 | Extreme Peptides |
| Ordering & service | 80 | 70 | Extreme Peptides |
Fact sheets side by side
| Extreme Peptides | Pure Peptide Labs | |
|---|---|---|
| Overall score | 44/100 (#31) | 74/100 (#5) |
| Status | Operating | Operating |
| Based in | US | Cedar Park, TX |
| Founded | 2010 | 2024 |
| Third-party testing | Not verified | Yes |
| Laboratories named | None named | Freedom Diagnostics, Kovera Labs, MDx BioAnalytical Laboratory, Precision Mass Spec |
| Public certificates | Yes | Yes |
| Lot-specific certificates | Not verified | Yes |
| Formats | vials, bulk | vials, blends |
| Catalog size | — | ≈63 |
| BPC-157 5 mg listed price | $48.99 | — |
| Free shipping from | $99 | $0 |
| Payments | card, crypto, ach | card, ach |
| Ships internationally | No | No |
| Research-use disclaimer | Yes | Yes |
| FDA warning letter | None found | None found |
Read the full reviews: Extreme Peptides review · Pure Peptide Labs review. Both suppliers sell materials labeled for laboratory research use only.
Both appear on: US-based suppliers · Suppliers with public certificates of analysis · Suppliers that take card payments.
The factor that separates them
The widest gap is documentation depth (0 vs 83). What that factor measures is explained in how to read a certificate of analysis and lot-level vs sample testing.
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Frequently asked questions
Which is better, Extreme Peptides or Pure Peptide Labs?
On our formula Pure Peptide Labs scores higher (74 vs 44). The largest gap is in documentation depth (0 vs 83). "Better" depends on what you weight; both fact sheets are on this page.
Do both publish certificates of analysis?
Extreme Peptides: yes. Pure Peptide Labs: yes. Lot-specific certificates — Extreme Peptides: not verified; Pure Peptide Labs: yes.
Which is cheaper?
We could not compare a like-for-like listing; price tiers are mid (Extreme Peptides) and unknown (Pure Peptide Labs).