THE IMPROVED STANDARD
Improved Peptides is a research-grade peptide supplier headquartered in Dallas, Texas. We provide the scientific research community with independently verified, lyophilized peptide compounds — every vial backed by a third-party Certificate of Analysis confirming minimum 99% purity via HPLC testing.
We built this company because researchers deserve better. Too many suppliers cut corners on purity verification, obscure their sourcing, and treat documentation as an afterthought. At Improved Peptides, the COA is not optional — it is the product. Every batch is independently tested before it reaches our catalog, and every result is published in our COA Library for full transparency.
Our operations are simple and uncompromising: same-day shipping on all orders, strict Research Use Only compliance, and a catalog built around the compounds that matter most to the research community. We do not chase trends or stock compounds we cannot verify. If it is in our catalog, it has been tested, documented, and approved to our standard.
Founded by researchers, for researchers. Based in Dallas, Texas. Operated with precision.
OUR STANDARDS
Purity First
Every compound is verified at ≥ 99% purity by independent HPLC analysis before entering our inventory. No exceptions.
Full Transparency
COA documentation is published for every batch in our public library. We do not hide results or selectively report data.
Research Compliance
All compounds are sold strictly for research use only. We maintain full compliance with RUO standards across our catalog.
Operational Precision
Orders ship same business day. Compounds are stored at controlled temperatures. Every vial is logged from receipt to delivery.