Independent side-by-side comparison of BioTech Peptides and Peptides 4 Research — third-party lab grades, tested purity, COA availability, FDA warnings, and community ratings.
Bottom line: Peptides 4 Research holds the stronger independent lab grade (ungraded vs D); Peptides 4 Research has more published third-party tests (2 vs 0); BioTech Peptides carries more community reviews (567).
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.
BioTech Peptides has no independent Janoshik assays on file. Peptides 4 Research: 2 independent Janoshik assays, across 2 substances, median measured purity 99.5%, most recent 2025-12-29.
| Attribute | BioTech Peptides | Peptides 4 Research |
|---|---|---|
| Independent lab grade | Not graded | D |
| Third-party tests | None published | 2 tests, avg purity 99.5% |
| Community rating | 4.4/5 (567 reviews) | No reviews |
| COA available | Yes | No |
| Endotoxin tested | No | No |
| FDA warnings | None on record | None on record |
| Year established | 2016 | Unknown |
| Substance | BioTech Peptides | Peptides 4 Research |
|---|---|---|
| Cjc-1295 NO DAC 10MG | Not tested | 99.27% (1 assay, latest 2025-12-29) |
| Retatrutide 10mg | Not tested | 99.70% (1 assay, latest 2025-10-31) |
| Checked | BioTech Peptides | Peptides 4 Research |
|---|---|---|
| Certificates of analysis | 41 published on the site | Not stated |
| Products listed | 89 | Not stated |
| Public pricing | Listed on the site | Not stated |
| Payment methods | Credit Card | Not stated |
| Ships to | United States, Worldwide | Not stated |
| Research-use-only notice | Published | Not stated |
Peptides 4 Research. BioTech Peptides has no independent Janoshik assays on file. Peptides 4 Research: 2 independent Janoshik assays, across 2 substances, median measured purity 99.5%, most recent 2025-12-29. These are third-party Janoshik assays published against the vendor, not the vendor's own certificates.
BioTech Peptides publishes 41 certificates of analysis on its own site, and we have not read Peptides 4 Research's site. A published COA is the vendor's own document; the assay figures elsewhere on this page are independent of it.
BioTech Peptides states it ships to United States, Worldwide, and Peptides 4 Research does not state one. Both are read from the vendors' own sites.
Full profiles: BioTech Peptides, Peptides 4 Research.
Full lab-test records: All 2 Peptides 4 Research lab tests.
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