Vendor Spotlight: American Peptides

American Peptides sells research peptides through americanpeptides.us. On Peptide Stores Online, the American Peptides storefront at https://peptidestoresonline.com/sites/american-peptides shows 68 active listings, and product links go to the vendor through the affiliate link. It is a storefront with genuine depth, and this spotlight walks through the range, the testing picture, and the smartest way to check a lot before ordering.

On our vendor ratings page at https://peptidestoresonline.com/vendor-ratings, American Peptides holds a published score of 3.1 out of 5. That score is published because American Peptides cleared our evidence gate with room to spare: 19 qualifying mentions across 2 source categories at the last scan on October 20, 2026, where a score appears only at 15 or more qualifying mentions across at least 2 source categories. A published score means the public evidence was thick enough to score fairly, and buyers can read the score and the method behind it on the same page.

The 68 active listings cover 68 compound groups, one distinct group per listing. The metabolic range leads: TIRZ-GLP2 (Tirzepatide), RETA-GLP3 (Retatrutide (Reta)), RETA-GLP3 + CAGRILINTIDE (Retatrutide + Cagrilintide), SEMA-GLP1 (Semaglutide), CAGRILINTIDE, AOD-9604, TESAMORELIN, the TESAMORELIN + IPAMORELIN combination, and MOTS-C. American Peptides decodes its GLP-coded names right in the titles, which makes the shelf easy to shop.

The wider range covers BPC-157, TB-500, GHK-Cu (Copper Peptide), IPAMORELIN, CJC-1295 (NO DAC), DSIP, EPITHALON, L-GLUTATHIONE, KISSPEPTIN-10, KPV, MELANOTAN-1, MELANOTAN-2, NAD+, PT-141, SELANK, SEMAX, SERMORELIN, SNAP-8, SS-31, IGF-1 LR3, ARA-290, 5-AMINO-1MQ, ADAMAX, DIHEXA, HUMANIN, OXYTOCIN, PINEALON, PROSTAMAX, TESTAGEN, THYMALIN, THYMOSIN ALPHA-1, VESUGEN, and VILON.

American Peptides also stands out for formats and bundles: liquid sprays for several compounds, Melts NAD+ Dissolving Strips and Melts Pro Selank + Semax Dissolving Strips, and a full bundle shelf that includes the ASCEND Bundle, GLOW Bundle, IRONCLAD Bundle, KLOW ELITE Bundle, NAD STACK Bundle, PRIME Bundle, PULSE Bundle, and WOLVERINE Bundle, plus blends such as BPC-157 + TB-500 (Wolverine Blend), GLOW MIX, KLOW BLEND, and SELANK + SEMAX. Bundles and blends are their own products with their own labels, so compare labeled contents line by line on the pricing page at https://peptidestoresonline.com/pricing.

Here is where American Peptides really shines. Verified public certificates of analysis are linked from 63 of their product pages on Peptide Stores Online. That is not a vague promise of testing - it is a checkable document, tied to a specific product, that a buyer can open and read before ordering. Our lab testing page at https://peptidestoresonline.com/lab-testing explains how lot-level checking works.

Each product page carries the COA badge when a public certificate is verified for that exact product, and certificates are matched lot by lot. A certificate covers only the one lot it names; it says nothing about a different lot of the same product, which is why lot matching matters more than any headline percentage. Match the lot number on the vial to the certificate, read identity, purity, and net content as three separate results, and you are checking evidence the way it is meant to be checked.

On top of that, American Peptides carries independent results from Finnrick. Finnrick rates American Peptides at 78 percent under its Purity Focus standard, ranked #151 of 489 ranked vendors, with 1 of 1 classifiable tests passed. The one classified result is Retatrutide, tested 30 Sep 2026, reported as PASS with purity of 99.9 percent, fill of -0 percent, and identity Pass; the certificate is linked in the sources below. That 78 percent is Finnrick's figure, not ours, and it is not a raw pass rate - it is Finnrick's own rating, and we report it exactly that way.

First, find the lot number on the listing or the vial label. Second, find the matching certificate for that product and confirm the product name, size, and lot number all match the listing. Third, read the three separate results a certificate reports: identity, purity, and net content. They answer different questions, and our guide to HPLC purity versus net peptide content at https://peptidestoresonline.com/blog/hplc-purity-versus-net-peptide-content-what-the-numbers-on-a-coa-mean explains why the two percentages are not interchangeable. Fourth, where the certificate carries an accession number or search code, use it to look the result up with the issuing lab where that lookup is offered. A certificate that can be matched to a lot, a lab, and a date is a stronger document than one that cannot.

Browse the full American Peptides range on its storefront at https://peptidestoresonline.com/sites/american-peptides, or use the shop at https://peptidestoresonline.com/shop and filter by vendor to see only American Peptides listings. To compare American Peptides prices for a compound against other vendors side by side, start from the compound research pages, such as https://peptidestoresonline.com/research/tirzepatide, https://peptidestoresonline.com/research/retatrutide, or https://peptidestoresonline.com/research/bpc-157, and the pricing page at https://peptidestoresonline.com/pricing. The research pages summarize the published study record for each compound, so the buying comparison and the evidence record sit one click apart.