Head to head · October 2026
Koi Peptides vs Simple Peptide
Koi Peptides scores higher, 72 to 65. The widest gap is documentation depth. Same formula, same data fields, October 2026.
Factor by factor
| Factor | Koi Peptides | Simple Peptide | Edge |
|---|---|---|---|
| Testing & certificates | 82 | 75 | Koi Peptides |
| Documentation depth | 65 | 25 | Koi Peptides |
| Transparency | 86 | 100 | Simple Peptide |
| Track record | 40 | 39 | Koi Peptides |
| Catalog | 48 | 57 | Simple Peptide |
| Pricing | 65 | 40 | Koi Peptides |
| Ordering & service | 90 | 75 | Koi Peptides |
Fact sheets side by side
| Koi Peptides | Simple Peptide | |
|---|---|---|
| Overall score | 72/100 (#7) | 65/100 (#14) |
| Status | Operating | Operating |
| Based in | Sheridan, WY (registered address); warehouses Austin, TX and Long Beach, CA | Delray Beach, FL |
| Founded | 2022 | 2019 |
| Third-party testing | Yes | Yes |
| Laboratories named | Freedom Diagnostics | Freedom Diagnostics Testing (Franklin, TN) |
| Public certificates | Yes | Not verified |
| Lot-specific certificates | Yes | Yes |
| Formats | vials | vials, strips, oral, skincare |
| Catalog size | — | — |
| BPC-157 5 mg listed price | — | — |
| Free shipping from | $200 | — |
| Payments | card, ach, wire | card, bank |
| Ships internationally | Yes | No |
| Research-use disclaimer | Yes | Yes |
| FDA warning letter | None found | None found |
Read the full reviews: Koi Peptides · Simple Peptide. Both suppliers sell materials labeled for laboratory research use only.
Frequently asked questions
Which is better, Koi Peptides or Simple Peptide?
On our formula Koi Peptides scores higher (72 vs 65). The largest gap is in documentation depth (65 vs 25). "Better" depends on what you weight; both fact sheets are on this page.
Do both publish certificates of analysis?
Koi Peptides: yes. Simple Peptide: not verified. Lot-specific certificates — Koi Peptides: yes; Simple Peptide: yes.
Which is cheaper?
We could not compare a like-for-like listing; price tiers are mid (Koi Peptides) and unknown (Simple Peptide).