Independent side-by-side comparison of Direct Peptides UK and Maximum Peps — third-party lab grades, tested purity, COA availability, FDA warnings, and community ratings.
Bottom line: Maximum Peps has more published third-party tests (1 vs 0); Direct Peptides UK carries more community reviews (678).
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.
Direct Peptides UK has no independent Janoshik assays on file. Maximum Peps: 1 independent Janoshik assay, median measured purity 99.7%, most recent 2026-01-28.
| Attribute | Direct Peptides UK | Maximum Peps |
|---|---|---|
| Third-party tests | None published | 1 test, avg purity 99.7% |
| Community rating | 4.3/5 (678 reviews) | No reviews |
| COA available | Yes | No |
| Endotoxin tested | No | No |
| FDA warnings | None on record | None on record |
| Year established | 2015 | Unknown |
| Substance | Direct Peptides UK | Maximum Peps |
|---|---|---|
| Glp-3rt 20mg | Not tested | 99.71% (1 assay, latest 2026-01-28) |
| Checked | Direct Peptides UK | Maximum Peps |
|---|---|---|
| Certificates of analysis | None found on the site | None found on the site |
| Products listed | 32 | 67 |
| Public pricing | Not stated | Listed on the site |
| Payment methods | Bank Transfer | Not stated |
| Ships to | United States, Worldwide | Not stated |
| Research-use-only notice | Published | Published |
| Stated origin | United States | Not stated |
Maximum Peps. Direct Peptides UK has no independent Janoshik assays on file. Maximum Peps: 1 independent Janoshik assay, median measured purity 99.7%, most recent 2026-01-28. These are third-party Janoshik assays published against the vendor, not the vendor's own certificates.
We found no certificates of analysis anywhere on Direct Peptides UK's site, and we found no certificates of analysis anywhere on Maximum Peps' site. A published COA is the vendor's own document; the assay figures elsewhere on this page are independent of it.
Direct Peptides UK states it ships to United States, Worldwide, and Maximum Peps does not state one. Both are read from the vendors' own sites.
Full profiles: Direct Peptides UK, Maximum Peps.
Full lab-test records: All 1 Maximum Peps lab test.
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