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Head-to-Head · 2026

Core Peptides vs Peptide Sciences

Independent side-by-side comparison — PVS scores, lab-verified purity, CoA coverage, and community sentiment. Rankings based solely on data; no paid placements, ever.

Higher PVS52PVS
Core Peptides

USA · 99.2% reported purity · 134+ CoAs

PepAssure VerifiedFull Core Peptides report
15PVS
Peptide Sciences

International · 99.2% reported purity · 61+ CoAs

PepAssure VerifiedFull Peptide Sciences report

The short answer

Core Peptides currently holds the higher Peptide Verification Score — 52/100 vs 15/100 for Peptide Sciences. 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 Peptide Sciences (right) — green marks the stronger pillar. “—” means insufficient data.

85Purity90
85CoA88
88Sentiment85
20Transparency82
20Experience85

At a glance

MetricCore PeptidesPeptide Sciences
PVS score52/100★15/100
Reported purity99.2%99.2%
CoAs on file134★61
Sentiment88%★85%
Last tested4 months ago4 months ago
LabJanoshikJanoshik
Price tier$$$$$
CategoryGHK-CuSelank
Shipping3-7 days3-5 days
LocationUSAInternational

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Rankings based solely on data. No paid placements — ever.