Modified Aminos pairs low prices with a lot-referenced COA library and two named labs, but it has no independent tests we could find. When we checked on October 19, 2026, most of its peptides were priced below the median in our index. It lists Sheridan, WY, and takes cards and ACH, but doesn't name the company behind it.
Notice: Modified Aminos' products are sold for in-vitro laboratory research only. They are not FDA-approved and not for human or animal use. This review covers supplier transparency and prices. We didn't buy or test any products. Some vendors pay us a commission when you buy through our links. That never changes a score or a price ranking.
Modified Aminos at a glance
- Website: modifiedaminos.shop, live when checked.
- Based in: Sheridan, WY.
- Company: no legal entity or owner named on the site.
- Testing labs/COAs: names Vanguard and Ethos Analytic; COAs at modifiedaminos.shop/coa-library/.
- Independent tests (Finnrick): we found no Finnrick tests for it.
- Payment: Visa, Mastercard, Discover, ACH.
- Gate: none.
- Catalog: 54 peptide products listed.
- Checked: October 19, 2026.
Prices we checked
Prices on modifiedaminos.shop on October 19, 2026, using the size with the lowest cost per mg:
| Peptide | Size | Price | Per mg | vs index median |
|---|---|---|---|---|
| BPC-157 | 5 mg | $24.99 | $5.00 | 17% below |
| TB-500 | 10 mg | $39.99 | $4.00 | 47% below |
| GHK-Cu | 100 mg | $39.99 | $0.40 | 43% below |
| NAD+ | 1000 mg | $79.99 | $0.08 | 38% below |
| MOTS-c | 10 mg | $34.95 | $3.50 | 22% below |
| BPC-157 / TB-500 blend | 20 mg | $69.99 | $3.50 | 36% below |
| Cagrilintide | 10 mg | $69.99 | $7.00 | 46% below |
| Tesamorelin | 20 mg | $99.99 | $5.00 | 36% below |
| Semax | 5 mg | $35.99 | $7.20 | 60% above |
| Selank | 5 mg | $34.99 | $7.00 | 40% above |
Most items sit well below the median across the vendors in our price index. Semax, selank and 5-Amino-1MQ are the exceptions. We did not find retatrutide, tirzepatide or semaglutide among its listed prices. Compare TB-500 prices, GHK-Cu prices, NAD+ prices and BPC-157 prices in our price index.
Testing and COAs
Modified Aminos has a COA library and a separate certificates page. The site mentions lot or batch numbers alongside its COAs, and it mentions endotoxin or sterility testing. It names two labs, Vanguard and Ethos Analytic. We list them as the vendor names them and have not verified any report.
What's missing is outside data. We found no tests for Modified Aminos on Finnrick, so its COAs are the only quality evidence available. Those are vendor-commissioned.
What we like
- Most prices well below the index median, including TB-500, GHK-Cu, NAD+ and cagrilintide.
- Two named testing labs and a lot-referenced COA library.
- Endotoxin or sterility testing mentioned.
- Card and ACH payment.
- The site advertises same-day shipping on orders by 2 PM and included shipping insurance.
What to watch
- No Finnrick tests found.
- No legal entity or owner named.
- Semax and selank priced 40-60% above the median.
- No GLP-class compounds in the prices we could read.
How it compares
On price alone, Modified Aminos is among the cheaper vendors we track for common research peptides. See all vendors we track, peptide deals this week and our ranked list.
Bottom line
Modified Aminos offers low prices, card payment and lot-referenced COAs from named labs. Without independent tests or a named company, its own certificates are all you have to go on. Match the lot on your vial to the COA library.
