Independent side-by-side comparison of Arctic Peptide and Licensed Peptides — third-party lab grades, tested purity, COA availability, FDA warnings, and community ratings.
Bottom line: Arctic Peptide shows higher average tested purity (99.6% vs 99.4%); Licensed Peptides has more published third-party tests (2 vs 1); Arctic Peptide carries more community reviews (310).
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. Licensed Peptides: 2 independent Janoshik assays, across 2 substances, median measured purity 99.4%, most recent 2025-10-09.
| Attribute | Arctic Peptide | Licensed Peptides |
|---|---|---|
| Third-party tests | 1 test, avg purity 99.6% | 2 tests, avg purity 99.4% |
| Community rating | 4.2/5 (310 reviews) | No 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 | Unknown |
| Substance | Arctic Peptide | Licensed Peptides |
|---|---|---|
| Retatrutide 10 Mg | 99.61% (1 assay, latest 2026-02-26) | Not tested |
| Retatrutide 40mg | Not tested | 99.72% (1 assay, latest 2025-10-09) |
| Retatrutide 12mg | Not tested | 99.11% (1 assay, latest 2025-08-27) |
| Checked | Arctic Peptide | Licensed Peptides |
|---|---|---|
| Certificates of analysis | Not stated | None found on the site |
| Products listed | Not stated | 91 |
| Public pricing | Not stated | Listed on the site |
| Payment methods | Not stated | Bank Transfer, Credit Card |
| Ships to | Not stated | United States |
| Carriers | Not stated | FedEx, UPS, USPS |
| Research-use-only notice | Not stated | Published |
| Stated origin | Not stated | United States |
Licensed Peptides. Arctic Peptide: 1 independent Janoshik assay, median measured purity 99.6%, most recent 2026-02-26. Licensed Peptides: 2 independent Janoshik assays, across 2 substances, median measured purity 99.4%, most recent 2025-10-09. These are third-party Janoshik assays published against the vendor, not the vendor's own certificates.
Arctic Peptide states that COAs are available, and we found no certificates of analysis anywhere on Licensed Peptides' site. A published COA is the vendor's own document; the assay figures elsewhere on this page are independent of it.
Arctic Peptide does not state a shipping region, and Licensed Peptides states it ships to United States. Both are read from the vendors' own sites.
Full profiles: Arctic Peptide, Licensed Peptides.
Full lab-test records: All 1 Arctic Peptide lab test, All 2 Licensed Peptides lab tests.
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