American-made research peptides,
engineered for purity.
Premium, USA-synthesized peptides — HPLC-verified ≥99% purity, third-party Certificate of Analysis on every batch, and same-day shipping from our domestic facility.
0+
Research Peptides
0%
Avg Purity
15
Failed Batches
0%
Repeat Order Rate
COA Certified
Every batch tested
99%+ Purity
Lab-verified
Same-Day Ship
Orders by 2PM EST
Secure Payment
256-bit encryption
USA-Based
Domestic sourcing
Most Popular
Researcher Favorites
Freshly stocked additions to our research catalog.
Shop by Research Area
Find Your Compound
Browse peptides organized by research application.
01
Growth Hormone Research
Compounds studied for endocrine and somatotropic pathways.
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02
Metabolic Research
Peptides investigated in glucose regulation and metabolic function.
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03
Tissue Repair Research
Sequences researched in cellular regeneration and recovery.
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04
Longevity Research
Compounds explored for cellular aging and senescence.
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05
Neurological Research
Peptides studied in cognitive and neural pathways.
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06
Cosmetic / Topical Research
Topically studied compounds in dermal applications.
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Beyond Purity
The American standard in research-grade peptides.
Six commitments. Independently verified. Every batch, every order — proudly made in the USA.
Independent 3rd-Party Testing
Every batch verified by independent US labs — HPLC-MS purity, MALDI identity, endotoxin screen.
99.7% avg purity · last 50 batches
See the receipts
Same-Day Shipping
Orders before 2PM EST ship same day. Tracked, insured, delivered in 2–3 business days.
2–3 days avg delivery · domestic
How it works
Damage & Error Coverage
Vial broken in transit or wrong product shipped? Notify us within 72 hours and we'll replace it at no cost.
72 hours to report · free replacement
Read the policy
Made in the USA
Synthesized and packaged in cGMP-compliant US facilities. Fully domestic supply chain — no imports.
100% US synthesis · packaging · ship
Inside the lab
Discreet Packaging
Plain unmarked outer box, generic return address, non-descript billing descriptor.
Zero identifying marks · inside or out
What it looks like
Expert Support
Researchers on staff — not a script-reading call center. Reconstitution, sourcing, and COA questions welcome.
< 6 hours avg first response · weekdays
Meet the team
4.9/5 from 2,400+ Verified Buyers
What researchers are saying
“Purity matches the COA every time. Genuinely same-day shipping. The only domestic supplier I trust.”
Dr. M. Chen · 11 orders
“The COA-before-purchase policy is why I stay. Other suppliers should follow.”
J. Rivera · 8 orders
“Ordered at 1PM, arrived 2 days later. Discreet packaging, exactly as described.”
K. Patterson · 3 orders
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Get 10% off your first order
Early access to new peptides, lab reports, and researcher-only offers.
Support
Frequently Asked Questions
Answers to the questions our research customers ask most often.
Are American Peptides products intended for human use?+
No. All peptides sold on this site are strictly for in-vitro laboratory and research use only. They are not intended for human or veterinary diagnostic or therapeutic use.
Where are your peptides synthesized?+
Every peptide is synthesized in the United States in ISO-compliant facilities and undergoes HPLC and mass spectrometry testing to ensure 99%+ purity.
Do you provide a Certificate of Analysis (COA)?+
Yes. A batch-specific COA with HPLC purity, mass spec confirmation, and endotoxin (LAL) results is available on every product page and ships with every order.
How fast do orders ship?+
Orders placed before 2pm ET ship the same business day from our US warehouse. Standard delivery arrives in 2–4 business days; expedited options are available at checkout.
How should peptides be stored?+
Lyophilized vials should be stored at -20°C for long-term stability. Once reconstituted with bacteriostatic water, store at 2–8°C and use within 28 days for best results.
What payment methods do you accept?+
We accept all major credit cards, ACH, and crypto. All transactions are processed over an encrypted, PCI-compliant gateway.
Do you ship internationally?+
We currently ship within the United States only. International research partners can contact our team for case-by-case arrangements.
What is your return policy?+
Due to the sensitive nature of research compounds, all sales are final. If a product arrives damaged or fails QC, contact us within 7 days for a replacement.