Capstone Peptides supplies research-use-only peptides to laboratory and research customers in the United States. Every product is sold strictly for in-vitro laboratory research and is not intended for human or veterinary use.What separates us is documentation. Every lot we sell is tested by Accumark Labs, an independent third-party laboratory, and the resulting certificate of analysis is published at a verifiable URL on the laboratory's own system — not a PDF we host and control. Anyone can open it and check the lot number, the measured purity, and the analysis date without contacting us first. We publish the actual figure for the lot that ships rather than a blanket claim across the catalog.Our peptides are supplied as lyophilized powder against a published purity specification of 98% or higher, with the measured result shown per lot. Orders ship FedEx 2-Day from a United States fulfillment center in discreet, unbranded packaging, with shipment insurance included on every order.Capstone Peptides is operated by Capstone Holdings LLC, a Virginia limited liability company. We are a merchant of record — we stand behind what we sell rather than routing you to a third party when something goes wrong.All products are research-use-only. We do not provide guidance on dosing, administration, or human use, and we do not make medical, therapeutic, or efficacy claims of any kind.
Capstone Peptides (capstonepeptides.com) has 1 customer review on Five Star Index, with an average rating of 5.0 out of 5.
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Jared S.
Great experience with Capstone Peptides. Communication was clear and professional, the process was straightforward, and any questions I had were handled promptly. I especially appreciated the attention to detail and customer service throughout the experience. Everything was handled professionally from start to finish. I would gladly recommend them based on my experience.
