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Head-to-Head · 2026
Core Peptides vs Loti Labs
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
Loti Labs currently holds the higher Peptide Verification Score — 60/100 vs 52/100 for Core 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
Core Peptides (left) vs Loti Labs (right) — green marks the stronger pillar. “—” means insufficient data.
85Purity88
85CoA86
88Sentiment84
20Transparency70
20Experience90
At a glance
| Metric | Core Peptides | Loti Labs |
|---|---|---|
| PVS score | 52/100 | 60/100★ |
| Reported purity | 99.2% | 99.2% |
| CoAs on file | 134★ | 97 |
| Sentiment | 88%★ | 84% |
| Last tested | 4 months ago | 4 months ago |
| Lab | Janoshik | Janoshik |
| Price tier | $$$ | $ |
| Category | GHK-Cu | Retatrutide |
| Shipping | 3-7 days | 4-6 days |
| Location | USA | USA |
More comparisons
Rankings based solely on data. No paid placements — ever.