HPLC-verified on every batch. Most products exceed 99% purity.
Third-party accredited US lab COA with HPLC chromatogram and MS data included.
Synthesized and QC-tested in the United States — not imported finished goods.
Inert-gas sealed lyophilized product with cold-chain packaging for transit integrity.
Orders ship same or next business day from our US fulfillment center.
Full research-use documentation and compliance labeling on all products.
The source of a research peptide is one of the most significant and least-discussed variables affecting study reproducibility. Many domestic distributors source finished peptide product from overseas contract manufacturers, then re-label and distribute under a US brand. While this lowers cost, it introduces supply chain steps — international transit, customs handling, extended storage — that can compromise peptide integrity before the product reaches your lab.
US Peptide Science operates with domestic synthesis and domestic QC. This means the full synthesis-to-shipment chain is completed within the United States under consistent temperature controls. Our COAs are issued by independent, accredited US testing laboratories — not in-house testing operations or overseas facilities whose accreditation is difficult to verify.
For researchers designing experiments where compound identity and purity are controlled variables, the supply chain provenance is not a marketing distinction — it is a methodological one. Domestic synthesis with verifiable third-party documentation reduces the supplier-side uncertainty in your experimental design.
Body Protection Compound — one of the most researched cytoprotective peptides.
View product →Thymosin Beta-4 fragment with extensive tissue repair research.
View product →Long-acting GHRH analogue studied for GH pulse amplification.
View product →GLP-1 receptor agonist — among the most active research areas in metabolic science.
View product →Selective GH secretagogue with a favorable selectivity profile for research.
View product →Synthetic GHRH analogue with robust clinical research history.
View product →Every product batch at US Peptide Science is tested and documented before shipment. Our Certificates of Analysis include:
US Peptide Science peptides are synthesized and quality-controlled domestically in the United States. We do not source from overseas contract manufacturers for our core research peptide catalog.
All products are verified at ≥98% HPLC purity, with most batches exceeding 99%. Every batch includes a Certificate of Analysis from an independent, accredited US testing laboratory with full HPLC chromatogram and mass spectrometry confirmation.
Yes. A batch-specific Certificate of Analysis (COA) — including HPLC chromatogram images and mass spectrometry molecular weight data — is provided with every order at no additional cost.
US Peptide Science offers a curated catalog of the most widely researched peptides: BPC-157, TB-500, CJC-1295, Ipamorelin, Semaglutide, Tesamorelin, Tirzepatide, and research blend formulations. All are available as lyophilized powder with cold-chain shipping.
Domestic synthesis provides tighter quality control over raw materials, synthesis conditions, and storage — reducing the supply chain variables that affect peptide integrity. US-manufactured peptides are also subject to domestic regulatory oversight, and COA documentation is more easily verified against known accredited US testing laboratories.
All products sold by US Peptide Science are for research use only and are not intended for human or veterinary therapeutic use, food additive use, or any other non-research application. Not for human consumption. Purchasers must be 21+ and confirm they are acquiring products for legitimate research purposes only.