Independent side-by-side comparison of Modern Aminos and Peptide-S — third-party lab grades, tested purity, COA availability, FDA warnings, and community ratings.
Bottom line: Peptide-S holds the stronger independent lab grade (E vs C); Modern Aminos has more published third-party tests (1 vs 0); Modern Aminos carries more community reviews (380).
Every figure below is either measured by an independent laboratory or read from the vendor's own website, and the source is named against it. PeptideAtlas is not affiliated with either vendor.
Modern Aminos: 1 independent Janoshik assay, median measured purity 99.6%, most recent 2024-03-14. Peptide-S has no independent Janoshik assays on file.
| Attribute | Modern Aminos | Peptide-S |
|---|---|---|
| Independent lab grade | E | C |
| Third-party tests | 1 test, avg purity 99.6% | None published |
| Community rating | 4.3/5 (380 reviews) | No reviews |
| COA available | Yes | No |
| Endotoxin tested | No | No |
| FDA warnings | None on record | None on record |
| Year established | 2020 | Unknown |
| Substance | Modern Aminos | Peptide-S |
|---|---|---|
| IGF Lr3 1MG | 99.58% (1 assay, latest 2024-03-14) | Not tested |
| Checked | Modern Aminos | Peptide-S |
|---|---|---|
| Certificates of analysis | Not stated | None found on the site |
| Products listed | Not stated | 186 |
| Public pricing | Not stated | Listed on the site |
| Ships to | Not stated | United States, Worldwide |
| Carriers | Not stated | UPS, USPS |
| Research-use-only notice | Not stated | Published |
Modern Aminos. Modern Aminos: 1 independent Janoshik assay, median measured purity 99.6%, most recent 2024-03-14. Peptide-S has no independent Janoshik assays on file. These are third-party Janoshik assays published against the vendor, not the vendor's own certificates.
Modern Aminos states that COAs are available, and we found no certificates of analysis anywhere on Peptide-S' site. A published COA is the vendor's own document; the assay figures elsewhere on this page are independent of it.
Modern Aminos does not state a shipping region, and Peptide-S states it ships to United States, Worldwide. Both are read from the vendors' own sites.
Full profiles: Modern Aminos, Peptide-S.
Full lab-test records: All 1 Modern Aminos lab test.
Related comparisons: Modern Aminos vs Amino Asylum, Peptide-S vs Amino Tech, Modern Aminos vs Limitless Life Nootropics, Peptide-S vs Healthletic, Modern Aminos vs Modern Peptides, Peptide-S vs LA Peptides.