American Peptides looks like a real, operating US business: American Peptides LLC in Shreveport, LA, with public lot-matched COAs and no FDA warning letter on record as of September 26, 2026. It's also very new, with a domain registered in February 2026, and has no independent test data yet. Its overall score is 9.1/10; on our transparency method alone it scores 7.6/10. It sits at #1 on our list as our editors' pick, not because it has the highest transparency score. Peptide Plugs and NextGenPeps score higher on transparency.
Notice: American Peptides' products are sold for in-vitro laboratory research only. They are not FDA-approved and not for human or animal consumption. This review covers supplier transparency only. We didn't buy or test any products.
American Peptides at a glance
- Operating status: Live storefront at americanpeptides.us, checked September 26, 2026.
- Entity and location: American Peptides LLC, governed by Louisiana law, with a Shreveport, LA location and phone number (terms). No street address is published.
- Business age: The domain was registered on February 21, 2026 (WHOIS).
- Catalog: 76 items across 9 categories, including research peptides, blends, bioregulators, bundles, liquid sprays and dissolving strips (homepage).
- FDA record: No warning letter found in the FDA database.
American Peptides COA: what's published
This is the vendor's strongest area.
- Lot-matched certificates. The COA page lists products with several lot numbers each (for example, lots coded like "RETA10-0803") and links a PDF for each lot. Older lots are marked "superseded" but stay available.
- Lot lookup. A verify page lets you enter the lot number from a vial and pull up its certificate. It said 126 lot-matched certificates were on file when we checked.
- Tests claimed. The homepage claims HPLC and mass-spec purity (≥99%), plus sterility (USP 71), endotoxin (USP 85) and heavy-metals testing.
The gap is the lab. The homepage says "Every batch verified by Bioviridian," but the COA page and the lookup tool don't name a lab. Two COA PDFs we opened weren't machine-readable, so we couldn't confirm the lab name on the certificates. The lookup runs on the vendor's own site, so it proves traceability, not independence.
Bioviridian publishes a street address in College Station, TX, and runs its own COA search. A lab directory lists its ISO/IEC 17025 accreditation as "in progress" (Peptigrity). If you rely on a certificate, check it against Bioviridian's own search. Our COA guide explains how.
Independent testing
Finnrick has a profile for American Peptides with 0 tests and no rating as of September 26, 2026. No community data exists yet to check the vendor's certificates against. See Janoshik vs Finnrick for why that matters.
Labeling: disclaimers vs product names
The site's disclaimers are strict. Its terms require buyers to be 21+ and to attest to in-vitro research use, and product pages state the items aren't drugs, foods, supplements or cosmetics.
Some product names and descriptions point the other way:
- The ASCEND Bundle is titled "Metabolic + Glow Up Research Stack," and its description targets "fat metabolism, skin rejuvenation, and melanogenesis pathways." It bundles a GLP-1-class compound (retatrutide) with GHK-Cu and Melanotan-1.
- A dissolving-strip product is sold as "Melts™ Brain-Fuel," and the catalog has a separate "Liquid Sprays" category.
These formats and names read like consumer products. FDA has said a research-use label doesn't protect a seller whose marketing points to human use (background). The catalog also includes GLP-1-class compounds.
Pricing and coupon code
Prices run from about $40 to $315 per item, and BPC-157 starts at $60 (catalog). The site offers 20% off a first order for email sign-up and 20% off year-round for active military and first responders. We found no public coupon code we could verify, so we don't list one.
Shipping, payment and returns
- Shipping: Processing takes 24-48 business hours, and orders over $300 ship free. The site also offers international shipping (policy).
- Payment: Visa, Mastercard, Amex, Discover, ACH/wire and cryptocurrency, per the terms.
- Returns: All sales are final. Damaged or incorrect items must be reported within 72 hours of delivery with photos for a replacement.
Is American Peptides legit?
American Peptides appears to be an operating vendor: American Peptides LLC in Shreveport, LA, with 126 lot-matched COAs and no FDA warning letter on record as of September 26, 2026. But it's very new, with a domain registered in February 2026, and there's no independent test data to check its certificates against.
Our scam check, as of September 26, 2026:
| Check | Result |
|---|---|
| Live storefront | Yes, americanpeptides.us (checked September 26, 2026) |
| Business entity/address published | Partly: American Peptides LLC, Shreveport, LA, and a phone number; no street address (terms) |
| Domain age (WHOIS) | Registered February 21, 2026 (WHOIS) |
| Named testing lab | Bioviridian, on the homepage only; not named on the COA page or lookup |
| Lot-matched COAs | Yes: 126 on file, with a lot lookup |
| Independent tests (Finnrick) | Profile with 0 tests (Finnrick) |
| FDA warning letter | None found (FDA database) |
| Trustpilot | 3.0/5 from 14 reviews, checked September 26, 2026 (Trustpilot) |
| Reddit discussion | Little discussion found in a site:reddit.com search (September 26, 2026) |
These checks cover disclosure and public records only. They don't test what's in the vial, which is why we weight independent testing in our score.
Compare it: American Peptides vs Ascension Peptides · American Peptides vs NextGenPeps · Peptide Plugs vs American Peptides
American Peptides reviews and complaints: Trustpilot and Reddit
The Trustpilot page is unclaimed and had 14 reviews averaging 3.0/5 when we checked, all from August-September 2026. Some reviews praise support and delivery speed. Others complain about product quality, damaged or late shipments and price. We didn't find substantial Reddit threads we could verify. With a business this new, there isn't much track record either way.
How American Peptides scores
| Factor | Weight | Score (5-10) | Why |
|---|---|---|---|
| COA publication | 20% | 9.25 | Public, lot-matched, lot lookup; dates only in lot codes |
| Lab traceability | 20% | 7.5 | Lab named on homepage, not on COA page; couldn't confirm on PDFs |
| Independent testing | 20% | 5.0 | Finnrick profile, 0 tests |
| Labeling and naming | 20% | 7.0 | Strict disclaimers, but "Glow Up" and "Brain-Fuel" naming, sprays and strips |
| Business transparency | 10% | 8.5 | LLC, city, phone, payments; no street address; 2026 domain |
| Regulatory record | 10% | 10.0 | No FDA warning letter found |
| Transparency score | 100% | 7.6 | Weighted average; raw method score 5.2 of 10 |
Shown on our 5-10 display scale: 5 means a vendor just meets our minimum bar to be listed, 10 is a perfect score on every factor. How we score.
Alternatives
- Peptide Plugs (7.5/10): Freedom Diagnostics COAs with accession codes you can check at the lab.
- NextGenPeps (8.8/10): names both labs, Janoshik and BioRegen, on its own site. Compare them in American Peptides vs NextGenPeps.
- Alpha Pro Peptides (6.3/10): shows a lot ID, date, purity and net content for each certificate.
- Ascension Peptides (8.1/10): an 85-record COA library searchable by lot; lab named only by independent reviewers.
- Swiss Chems (6.5/10): has operated since 2018 and has Finnrick data, but also an FDA warning letter.
- PSPeptides (8.5/10): large catalog, but its blog publishes dosing guides.
Verdict
American Peptides scores 9.1/10. Its lot lookup and named lab are real strengths for a vendor this young. The missing lab name on its certificates, the lack of any independent data and its health-style product names hold it back. New Finnrick results and lab names printed on each COA would move its score most.
If you evaluate it for laboratory work, look up your exact lot and confirm the certificate with Bioviridian directly. Visit American Peptides to see its COA lookup.
Related: best peptide vendors · best peptide vendors in the USA · FDA peptide regulation in 2026
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