Peptide Sciences vs Simple Peptide
Side-by-side vendor verification — Peptide Verification Score, independent tests, labs on file, enforcement history, and last test date. Research use only. No paid placements.
The short answer
Peptide Sciences currently holds the higher Peptide Verification Score — 15/100 vs 1/100 for Simple Peptide. The pillar breakdown below shows where each vendor earns (or loses) points across purity testing, CoA verification, community sentiment, transparency, and order experience — see the scoring methodology for how the PVS is computed.
Pillar-by-pillar breakdown
Peptide Sciences (left) vs Simple Peptide (right) — green marks the stronger pillar. “—” means no data: that pillar counts as 0 in the vendor's PVS. Its published weight stays in the total and is not given to the pillars that were measured.
At a glance
| Metric | Peptide Sciences | Simple Peptide |
|---|---|---|
| PVS score | 15/100★ | 1/100 |
| Reported purity | — | — |
| CoAs on file | 0 | 0 |
| Sentiment | — | — |
| Independent tests | 10★ | 9 |
| Labs | Finnrick | Finnrick, Freedom Diagnostics |
| Enforcement history | Shut down | None on file |
| Last test date | 2026-07-20 (3 months ago) | 2026-10-20 (1 week ago) |
| Price tier | — | — |
| Category | Selank | Melanotan II |
| Shipping | 3-5 days | 3-7 days |
| Location | International | UK |
Closed or enforcement record
- Peptide Sciences alternatives — what Enforcement Watch has on file, and ranked replacements.
Frequently asked
Which is better, Peptide Sciences or Simple Peptide?
Peptide Sciences has the higher Peptide Verification Score: 15/100 versus 1/100 for Simple Peptide. A score of 0 means PepAssure has not published one. This comparison is for research-use vendor verification, not a recommendation to buy. Rankings are not paid placements.
Does Peptide Sciences or Simple Peptide have an enforcement record?
Peptide Sciences is listed as Shut down; Simple Peptide has no Enforcement Watch record. The vendor page and Enforcement Watch link the source when one is on file.
How many independent tests do Peptide Sciences and Simple Peptide have?
Peptide Sciences: 10 independent lab tests on file (Finnrick or Janoshik). Simple Peptide: 9 independent lab tests on file (Finnrick or Janoshik).
More comparisons
Rankings based solely on data. No paid placements — ever.