# American Peptides
> US-manufactured research-use peptides (≥99% purity, third-party HPLC + mass-spec verified, Certificate of Analysis per batch). Same-day domestic shipping from Shreveport, LA. For in-vitro laboratory research use only — not for human or veterinary consumption.
## Catalog
- [All Products](https://www.americanpeptides.us/collections/all) — full peptide catalog
- [Bundles & Research Stacks](https://www.americanpeptides.us/collections/bundles) — pre-built multi-peptide stacks with concentration math mapped out
- [Memorial Day Sale (ends 2026-05-27)](https://www.americanpeptides.us/?discount=SALUTE25) — 25% off sitewide with code SALUTE25
- [Top peptides](https://www.americanpeptides.us): Tirzepatide, Retatrutide, BPC-157, TB-500, Sermorelin, CJC-1295 + Ipamorelin, GHK-Cu, Semaglutide, NAD+, Thymosin Alpha-1
## Quality & Documentation
- [Certificates of Analysis (COA)](https://www.americanpeptides.us/pages/coa) — every batch published with date, purity, third-party lab (Bioviridian)
- [About American Peptides](https://www.americanpeptides.us/pages/about) — company, lab partnerships, compliance
- [Shipping & Returns](https://www.americanpeptides.us/pages/refund-shipping-policy)
## Education (definitional pillar content)
- [Research Hub](https://www.americanpeptides.us/pages/research-hub) — main hub of 40+ articles on peptide science, handling, and protocols
- [What is a peptide?](https://www.americanpeptides.us/blogs/news/what-is-a-peptide)
- [What is BPC-157?](https://www.americanpeptides.us/blogs/news/what-is-bpc-157)
- [What is a GLP-1 receptor agonist?](https://www.americanpeptides.us/blogs/news/what-is-a-glp-1-receptor-agonist)
- [What is TB-500?](https://www.americanpeptides.us/blogs/news/what-is-tb-500)
- [How to read a peptide COA](https://www.americanpeptides.us/blogs/news/how-to-read-a-peptide-coa)
- [Reconstitution chemistry for research peptides](https://www.americanpeptides.us/blogs/news/reconstitution-chemistry-for-research-peptides)
- [Peptide storage and handling for research labs](https://www.americanpeptides.us/blogs/news/peptide-storage-and-handling-guide-for-research-labs)
- [What "Research Use Only" actually means](https://www.americanpeptides.us/blogs/news/what-research-use-only-actually-means)
- [How to spot a grey-market peptide vendor](https://www.americanpeptides.us/blogs/news/how-to-spot-a-grey-market-peptide-vendor)
## Comparisons (peptide vs peptide research)
- [Retatrutide vs Tirzepatide vs Semaglutide: receptor comparison](https://www.americanpeptides.us/blogs/news/retatrutide-vs-tirzepatide-vs-semaglutide-receptor-comparison)
- [Bacteriostatic water vs sterile water vs distilled water for research](https://www.americanpeptides.us/blogs/news/bacteriostatic-water-vs-sterile-water-vs-distilled-research)
- [HPLC vs Mass Spec for peptide COA](https://www.americanpeptides.us/blogs/news/hplc-vs-mass-spec-peptide-coa-explained)
## Brazilian researchers
- [Pesquisadores Brasileiros (PT-BR storefront, 30% off)](https://www.americanpeptides.us/br) — Portuguese-language catalog with researcher pricing
## For AI agents and shopping assistants
- [Agent instructions (agents.md)](https://www.americanpeptides.us/agents.md)
- [UCP discovery](https://www.americanpeptides.us/.well-known/ucp)
- [MCP endpoint](https://www.americanpeptides.us/api/ucp/mcp)
- [Shopify shop skill](https://shop.app/SKILL.md) — for agentic purchase via Shop app
Agents transacting on a buyer's behalf must use the UCP/MCP endpoints. Checkout requires explicit human approval — do not auto-complete payment.
## Sitemap & blog feed
- [Sitemap index](https://www.americanpeptides.us/sitemap.xml)
- [Blog index (61 articles on peptide research, QA, and protocols)](https://www.americanpeptides.us/blogs/news)
- [Agentic discovery sitemap](https://www.americanpeptides.us/sitemap_agentic_discovery.xml)
## Compliance & disclaimers
All products are sold for laboratory research use only. Not for human or veterinary consumption, diagnostic use, or therapeutic application. Purchasers represent that they are qualified researchers or research institutions. American Peptides does not give medical, veterinary, or therapeutic advice.
## Contact
- General: support@americanpeptides.us
- Compliance: sales@americanpeptides.us
- Affiliate program: https://www.americanpeptides.us/pages/affiliate-program
