Prime Peptides vs Sigma Peptides
Independent side-by-side comparison — PVS scores, lab-verified purity, CoA coverage, and community sentiment. Rankings based solely on data; no paid placements, ever.
The short answer
Sigma Peptides currently holds the higher Peptide Verification Score — 43/100 vs 31/100 for Prime Peptides. 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
Prime Peptides (left) vs Sigma Peptides (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 | Prime Peptides | Sigma Peptides |
|---|---|---|
| PVS score | 31/100 | 43/100★ |
| Reported purity | — | — |
| CoAs on file | 0 | 0 |
| Sentiment | — | — |
| Last tested | 3 weeks ago | 8 months ago |
| Lab | — | — |
| Price tier | — | — |
| Category | GHK-Cu | DSIP |
| Shipping | 3-7 days | 5-7 days |
| Location | USA | UK |
More comparisons
Rankings based solely on data. No paid placements — ever.