Peptide Sciences

Peptide Sciences has been a consistent presence in the research peptide market for several years. Their testing protocol involves monthly third-party HPLC analysis on representative samples from their inventory, which provides a reasonable level of quality assurance, though it falls short of the per-batch testing offered by premium vendors.

Their catalog is comprehensive, covering most commonly researched peptides including growth hormone secretagogues, healing-related peptides, and metabolic compounds. Product pages include general purity specifications, though individual COAs are available upon request rather than proactively displayed.

Shipping is domestic but operates on a 2-4 business day timeline, which is acceptable but not industry-leading. Packaging is professional and includes basic handling instructions.

Overall, Peptide Sciences represents a reliable mid-tier option for researchers who want established vendor credibility without necessarily requiring the premium service level of market leaders.