Independent side-by-side comparison of Arctic Peptide and Science.bio — third-party lab grades, tested purity, COA availability, FDA warnings, and community ratings.
Bottom line: Arctic Peptide has more published third-party tests (1 vs 0); Science.bio carries more community reviews (620).
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.
Arctic Peptide: 1 independent Janoshik assay, median measured purity 99.6%, most recent 2026-02-26. Science.bio has no independent Janoshik assays on file.
| Attribute | Arctic Peptide | Science.bio |
|---|---|---|
| Third-party tests | 1 test, avg purity 99.6% | None published |
| Community rating | 4.2/5 (310 reviews) | 4/5 (620 reviews) |
| COA available | Yes | No |
| Endotoxin tested | No | No |
| FDA warnings | None on record | None on record |
| Production country | Norway | Not specified |
| Year established | 2021 | 2016 |
| Substance | Arctic Peptide | Science.bio |
|---|---|---|
| Retatrutide 10 Mg | 99.61% (1 assay, latest 2026-02-26) | Not tested |
Arctic Peptide. Arctic Peptide: 1 independent Janoshik assay, median measured purity 99.6%, most recent 2026-02-26. Science.bio has no independent Janoshik assays on file. These are third-party Janoshik assays published against the vendor, not the vendor's own certificates.
Full profiles: Arctic Peptide, Science.bio.
Full lab-test records: All 1 Arctic Peptide lab test.
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