I have not placed an order with American Peptides. This profile is built from a full read of their site and certificate library, with two certificates checked against the testing lab's own records.
Who this vendor is
The most identifiable company in this field, which is a low bar that almost nobody else clears. American Peptides LLC is named as the contracting party in their terms of service and appears as the registrant organisation in the domain record, not hidden behind a privacy service. Their address, 9742 St. Vincent Ave in Shreveport, Louisiana, is published and labelled as a shipping facility.
They are also new. The domain was registered in February 2026, making them roughly seven months old, which one reviewer notes approvingly rather than as a complaint.
The gap in an otherwise strong transparency picture is that there is no phone number anywhere on the site, despite the contact page inviting you to "text or email" their support team. No founder, officer, or staff member is named either.
Third-party testing and COAs
This is the best-organized certificate system of any vendor I have scored, and the organisation itself is the point. Three independent routes to the same document:
The library at /pages/coa holds 114 certificate PDFs and 41 safety data sheets, grouped by compound and labelled with
vial size and lot number. Superseded lots are kept online and explicitly marked "superseded" rather than quietly
deleted, which is the correct way to handle a retired batch and something nobody else here does.
The lot lookup at /verify lets you type the lot number printed on your vial and pull that exact document, stating "126
lot-matched certificates on file, updated as new lots are released."
And each product page links its own lot-matched certificate per size, so the BPC-157 page separately links the 5mg, 10mg, and 15mg documents.
The lab is Bioviridian Inc. of College Station, Texas, signed by Shane Straight, M.S., Principal Chemist, with the vendor named correctly on every report. Each report embeds an HPLC chromatogram, a mass spectrometry trace, and a photograph of the actual labelled vial with its QC sticker.
Across the four certificates I opened, purity ran 99.73 to 99.83 percent, and every content figure came in slightly above label: 10.61 mg against 10, 5.19 against 5, 5.33 against 5, 51.02 against 50. Consistent, mild overfill that conforms, which is what you want to see.
One thing the certification line does not say, and it matters: the material "meets or exceeds Bioviridian's analytical quality specifications for peptide research use." The lab is certifying against its own internal standard, not a pharmacopeial or regulatory one.
Verification, and the discrepancy that runs the wrong way
Every report prints a web verification code and tells you to check it at Bioviridian's public portal. I verified two of four. Both exist on the lab's own system and match the vendor's copy on lot, molecular weight, received date, content, purity, endotoxin, and heavy metals.
Two fields differ, and the direction is the interesting part. The lab's records show a later issue date, August 28 against the vendor's August 17, and the lab's copies carry an extra test row the vendor's copies do not: sterility by USP 71, Not Detected, Conforms.
So Bioviridian re-issued these certificates in late August with sterility added, and American Peptides is still publishing the earlier revision. The documents on their site are one revision stale, and the stale version understates the testing actually performed. That is a records-hygiene problem, not a misrepresentation, because the error runs against the vendor's own interest rather than in its favour.
It does create one live inaccuracy on the storefront. Their banner claims "ENDOTOXIN TESTED · STERILITY VERIFIED" and the homepage describes a full 14-day USP 71 incubation. Endotoxin is on every published document. Sterility is on none of them, and appears only on the lab's own re-issued copies that the vendor is not currently hosting. The claim is true of the testing and false of the paperwork.
A separate small oddity: the portal record for the retatrutide certificate reads "Retatrutide 100mg" where the vendor copy reads 10mg. The vial photographed on both copies is labelled 10MG, so this looks like a typo on the lab's side rather than a substantive difference.
Product range and specs
96 product pages across nine collections, with 51 carrying published certificates. The product specifications are the most complete in this entire field: CAS number, molecular formula, molecular weight, amino acid count, full sequence, synonyms, physical form, solubility, and storage conditions, listed per product with per-size SKUs.
Pricing and value
Expensive. BPC-157 at $12.00 per mg is the highest in this field, against $4.00 at Midwest and $3.00 at NextGen. Retatrutide at $10.50 per mg is likewise at the top end. GHK-Cu at $1.00 per mg is more competitive. One reviewer puts it plainly, saying prices are higher than they would like but the quality makes up for it.
Automatic volume pricing runs 7 percent off at 3 to 4 units, 11 percent at 5 to 9, and 16 percent at 10 or more, with free standard shipping over $300 and a 20 percent discount for military and first responders.
Worth flagging for your own reading elsewhere: their affiliate program advertises "up to 35%," which is the highest commission I have seen in this category. Any blog review of this vendor that leads with a discount code should be read as paid placement rather than independent assessment.
Ordering, shipping, and payment
Dispatched within 24 to 48 business hours with tracking emailed, rates calculated at checkout by destination and speed. The policy describes "Lab-Grade Secure Packaging" preserving "molecular integrity and chain-of-custody standards."
That language is not matched by a written commitment. Nothing in the formal policy commits to cold-chain or insulated shipping, and the reviews in the section below are specifically about that gap.
There is also a live contradiction in their own dispatch claims: the banner and contact page say same-day shipping on orders by 2PM EST, while product pages say same-day before 12pm CT. Those are different cutoffs.
Payment methods could not be determined. No payment icons appear on product pages, the cart, or the footer, and I did not enter checkout to look.
What customers actually report
Their Trustpilot profile is confirmed as theirs, listing americanpeptides.us exactly. It is unclaimed, Trustpilot notes the company has never invited customers to review, and every review is tagged unprompted. The rating is 3.4 from 9 reviews, spread across the full range.
That number looks worse than the 4.8s and 4.9s elsewhere on this site, and it is more trustworthy than most of them, precisely because nobody solicited it. Read the themes rather than the score:
Cold chain is the recurring complaint and it is specific. One reviewer describes vials arriving wrapped together in bubble wrap inside an envelope in 90-plus degree weather, asking for insulation at minimum and a cold pack ideally, and estimating a meaningful loss of shelf life. A second describes paying for advertised two-day delivery, waiting five days across the southeast in similar heat, and discarding the vial on arrival. Two independent people, same failure.
A certificate gap, from a repeat buyer who reports spending around $3,000 and says the products seem legitimate but there is no certificate published for their cagrilintide specifically.
One unresolved dispute worth understanding before you weigh it. A buyer says a TikTok link led to a page offering ten retatrutide vials for $105, one vial arrived, and when they asked for a refund the vendor replied that they had purchased from a fake site. Given how common lookalike storefronts are in this market, that explanation is plausible, and a spoof site reselling genuine product would produce exactly this outcome. It is also unresolved, and a real person is out of pocket.
Where they fall short
- Heat-sensitive product shipped without insulation, repeatedly. The clearest, most actionable weakness on this vendor. Two unprompted reviewers, same specific failure, and no written cold-chain commitment to hold them to.
- The sterility claim is not supported by the documents they publish. The testing genuinely happened, per the lab's own records. The certificates on their site do not show it, because they are hosting a superseded revision.
- The "99.9% Purity" badge overstates their own results. The current lots for those exact products test 99.73, 99.83, and 99.77 percent. Their spec blocks say "≥ 99% (HPLC Verified)," which is accurate. The badge is not.
- "7 Testing layers per lot" is not what the certificates show. They show five, or six counting the sterility row that only appears on the lab's copy.
- No phone number, on a site that tells you to text them. Contact is a ticket or email only.
- The commerce around the research framing pulls the other way. Subscribe-and-save recurring deliveries, a reconstitution kit marked "REQUIRED" in the frequently-bought-together block, alcohol prep pads by the box of 200, and a dedicated discreet-packaging page promising plain boxes with no identifying labels. Those are consumer purchase patterns, not laboratory procurement ones, whatever the disclaimer says.
Who this vendor is a good fit for
Someone who values traceability and wants to know exactly who they are buying from. The lot-lookup tool, the retained superseded lots, the working lab portal, and a real registered LLC add up to the most auditable operation in this field.
Order in cooler weather, or accept that you may need to use the 72-hour damage window. And check whether a certificate exists for your specific compound before you buy, since coverage is 51 products against a 96-page catalog.
Bottom line
Their paperwork is excellent and their logistics are the problem, which is an unusual shape in this market and a more fixable one than the reverse. Everything upstream of the shipping label is better documented here than almost anywhere else I have looked.
The fix on their side is an insulated mailer and a cold pack, and they should make it. Until they do, the temperature risk sits with you, and for a lyophilized peptide crossing the southeast in August that is not a small thing.