Independent side-by-side comparison of Fenrir Labs Uk LTD and InfiniWell — third-party lab grades, tested purity, COA availability, FDA warnings, and community ratings.
Bottom line: Fenrir Labs Uk LTD has more published third-party tests (1 vs 0); InfiniWell carries more community reviews (4800).
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.
Fenrir Labs Uk LTD: 1 independent Janoshik assay, median measured purity 99.7%, most recent 2025-07-07. InfiniWell has no independent Janoshik assays on file.
| Attribute | Fenrir Labs Uk LTD | InfiniWell |
|---|---|---|
| Third-party tests | 1 test, avg purity 99.7% | None published |
| Community rating | No reviews | 4.3/5 (4800 reviews) |
| COA available | Yes | No |
| Endotoxin tested | No | No |
| FDA warnings | None on record | None on record |
| Production country | Not specified | United States |
| Year established | Unknown | 2020 |
| Substance | Fenrir Labs Uk LTD | InfiniWell |
|---|---|---|
| Retatrutide 10 Mg | 99.75% (1 assay, latest 2025-07-07) | Not tested |
| Checked | Fenrir Labs Uk LTD | InfiniWell |
|---|---|---|
| Certificates of analysis | None found on the site | None found on the site |
| Products listed | 11 | 48 |
| Public pricing | Listed on the site | Listed on the site |
| Payment methods | Bank Transfer | Credit Card, PayPal |
| Ships to | United Kingdom | United States, United Kingdom, Canada, Australia, New Zealand, Worldwide |
| Research-use-only notice | Published | Not stated |
| Stated origin | Not stated | United States |
Fenrir Labs Uk LTD. Fenrir Labs Uk LTD: 1 independent Janoshik assay, median measured purity 99.7%, most recent 2025-07-07. InfiniWell has no independent Janoshik assays on file. These are third-party Janoshik assays published against the vendor, not the vendor's own certificates.
We found no certificates of analysis anywhere on Fenrir Labs Uk LTD's site, and we found no certificates of analysis anywhere on InfiniWell's site. A published COA is the vendor's own document; the assay figures elsewhere on this page are independent of it.
Fenrir Labs Uk LTD states it ships to United Kingdom, and InfiniWell states it ships to United States, United Kingdom, Canada, Australia, New Zealand, Worldwide. Both are read from the vendors' own sites.
Full profiles: Fenrir Labs Uk LTD, InfiniWell.
Full lab-test records: All 1 Fenrir Labs Uk LTD lab test.
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