Independent side-by-side comparison of PTDS and XTP — third-party lab grades, tested purity, COA availability, FDA warnings, and community ratings.
Bottom line: XTP shows higher average tested purity (99.5% vs 97.9%); XTP has more published third-party tests (5 vs 2).
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.
PTDS: 2 independent Janoshik assays, across 2 substances, median measured purity 97.9%, most recent 2024-05-31. XTP: 5 independent Janoshik assays, across 5 substances, median measured purity 99.5%, most recent 2025-04-29.
| Attribute | PTDS | XTP |
|---|---|---|
| Third-party tests | 2 tests, avg purity 97.9% | 5 tests, avg purity 99.5% |
| COA available | Yes | No |
| Endotoxin tested | No | No |
| FDA warnings | None on record | None on record |
| Substance | PTDS | XTP |
|---|---|---|
| Mots-c 15 Mg | 99.59% (1 assay, latest 2024-05-31) | Not tested |
| HGH W/ Dimer 24 IU | 96.29% (1 assay, latest 2024-04-19) | Not tested |
| Glow-70mg | Not tested | purity not reported (1 assay, latest 2025-04-29) |
| Bpc157-10mg | Not tested | 99.76% (1 assay, latest 2025-04-29) |
| Tb500-10mg | Not tested | 99.48% (1 assay, latest 2025-04-29) |
| Tirzepatide-30mg | Not tested | 99.26% (1 assay, latest 2025-04-29) |
| Tirzepatide-60mg | Not tested | 99.49% (1 assay, latest 2025-04-29) |
XTP. PTDS: 2 independent Janoshik assays, across 2 substances, median measured purity 97.9%, most recent 2024-05-31. XTP: 5 independent Janoshik assays, across 5 substances, median measured purity 99.5%, most recent 2025-04-29. These are third-party Janoshik assays published against the vendor, not the vendor's own certificates.
Full lab-test records: All 2 PTDS lab tests, All 5 XTP lab tests.
Related comparisons: PTDS vs Panda Peptides LLC, PTDS vs PeptiAtlas.