PSPeptides

US-based research peptide manufacturer offering batch-specific COAs; says peptides are 99%+ by HPLC from independent testing but does not name the lab. Offers US manufacturing with domestic quality standards across 30+ products. 5-star Trustpilot rating from thousands of reviews.

Directory assessment: PSPeptides is listed as a research supplier in the peptide supply chain, serving North America markets from USA. As a direct manufacturer, this supplier controls its own production process from synthesis through purification and quality control release testing. This profile lists 1 source for reference. This supplier has a medium confidence score — verification signals are present, but the listing is newer or less documented; perform standard due diligence before engaging.