Independent side-by-side comparison of Panda Peptides and Peptide Gurus — third-party lab grades, tested purity, COA availability, FDA warnings, and community ratings.
Bottom line: Peptide Gurus holds the stronger independent lab grade (ungraded vs D); Peptide Gurus has more published third-party tests (63 vs 27).
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.
Panda Peptides: 27 independent Janoshik assays, across 20 substances, median measured purity 99.7%, most recent 2026-05-05. Peptide Gurus: 63 independent Janoshik assays, across 58 substances, median measured purity 99.7%, most recent 2026-04-24.
| Attribute | Panda Peptides | Peptide Gurus |
|---|---|---|
| Independent lab grade | Not graded | D |
| Third-party tests | 27 tests, avg purity 99.6% | 63 tests, avg purity 99.5% |
| COA available | Yes | No |
| Endotoxin tested | No | No |
| FDA warnings | None on record | None on record |
| Year established | 2024 | Unknown |
| Substance | Panda Peptides | Peptide Gurus |
|---|---|---|
| Tesamorelin 10mg | 99.20% (1 assay, latest 2026-05-04) | 99.74% (1 assay, latest 2026-04-14) |
| Cjc1295 NO DAC | purity not reported (4 assays) | Not tested |
| Retatrutide 10mg | Not tested | 99.51% (3 assays, latest 2026-04-14) |
| Tirzepatide 30mg | Not tested | 99.84% (3 assays, latest 2026-04-14) |
| KLOW 80mg | purity not reported (2 assays) | Not tested |
| Thymosin Alpha1 5mg | purity not reported (2 assays) | Not tested |
| Cjc1295 NO DAC 5mg | purity not reported (2 assays) | Not tested |
| Melanotan II Mt2 10mg | purity not reported (2 assays) | Not tested |
| Tirzepatide 10mg | Not tested | 99.79% (2 assays, latest 2026-04-14) |
| Glp-3- 20mg | purity not reported (1 assay, latest 2026-05-05) | Not tested |
| Bpc-157/tb-500 Blend 5mg+5mg | purity not reported (1 assay, latest 2026-05-04) | Not tested |
| Sermorelin - 5mg | purity not reported (1 assay, latest 2026-01-13) | Not tested |
| Checked | Panda Peptides | Peptide Gurus |
|---|---|---|
| Certificates of analysis | 72 published on the site | Not stated |
| Products listed | 40 | Not stated |
| Public pricing | Listed on the site | Not stated |
| Payment methods | Bank Transfer, Credit Card, Zelle, Cash App | Not stated |
| Ships to | United States, Worldwide | Not stated |
| Carriers | USPS | Not stated |
| Research-use-only notice | Published | Not stated |
| Stated origin | United States | Not stated |
Peptide Gurus. Panda Peptides: 27 independent Janoshik assays, across 20 substances, median measured purity 99.7%, most recent 2026-05-05. Peptide Gurus: 63 independent Janoshik assays, across 58 substances, median measured purity 99.7%, most recent 2026-04-24. These are third-party Janoshik assays published against the vendor, not the vendor's own certificates.
Tesamorelin 10mg has been independently assayed for both. Panda Peptides measured a median 99.20% across 1 assay; Peptide Gurus measured 99.74% across 1. Purity reflects the lots actually tested, not every batch either vendor sells.
Panda Peptides publishes 72 certificates of analysis on its own site, and we have not read Peptide Gurus' site. A published COA is the vendor's own document; the assay figures elsewhere on this page are independent of it.
Panda Peptides states it ships to United States, Worldwide, and Peptide Gurus does not state one. Both are read from the vendors' own sites.
Full profiles: Panda Peptides, Peptide Gurus.
Full lab-test records: All 27 Panda Peptides lab tests, All 63 Peptide Gurus lab tests.
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