Third-party lab testing: 18 independent Janoshik assays on file, covering 17 substances, median measured purity 99.8%, most recent test 2026-01-22.
Finnrick, an independent testing programme, publishes 5 assays for Penguin Peptides: 4 met its Purity focus threshold (at least 99.5% purity, no more than 35% dosage deviation) and 1 did not. Most recent assay 16 Jun 2026.
Penguin Peptides operates from us, listed by Finnrick as "Trading". Source: Finnrick, https://www.finnrick.com/vendors/penguin-peptides.
Penguin Peptides is listed as active.
| Substance | Measured purity | Test date |
|---|---|---|
| HGH 191AA 36iu | 96.33% | 2026-01-22 |
| Glp-1 T 120mg | 99.88% | 2026-01-21 |
| Glp-1 T 60mg | 99.86% | 2026-01-21 |
| Glp-3 R 30mg | 99.88% | 2026-01-21 |
| Mots-c 40mg | 99.54% | 2026-01-21 |
| Ghk-cu 50mg | 99.97% | 2025-08-25 |
| Epithalon 10mg | 99.76% | 2025-08-21 |
| GLOW 70mg | not reported | 2026-01-21 |
| KLOW 80mg | not reported | 2026-01-21 |
| BACTERIOSTATIC WATER 10ml | not reported | 2026-01-21 |
| Bpc-157 10mg + TB 500 10mg | not reported | 2026-01-21 |
| GLOW 70mg | not reported | 2025-08-21 |
7 of these 12 assays report a measured purity figure. The other 5 confirm the substance was submitted and tested but carry no purity number on the certificate, which is not the same as a failed result.
All 18 lab tests for Penguin Peptides
| Product | Assays | Result |
|---|---|---|
| Tirzepatide | 5 | 4 passed, 1 failed |
Source: Finnrick, as published 2026-08-09. Pass and fail are Finnrick's classification against its own threshold, not ours.
| Status | Active |
|---|---|
| Independent assays on file | 18 |
| Median measured purity | 99.8% |
| Vendor type | Research-use supplier |
Penguin Peptides is listed as active and we hold 18 independent Janoshik assays on file, median measured purity 99.8%; 5 Finnrick assays (4 passing, 1 failing its purity threshold). That is evidence about the batches that were tested or published, not a guarantee about the vial you receive.
Yes. We hold 18 third-party Janoshik assays for Penguin Peptides, covering 17 substances, with a median measured purity of 99.8%. The most recent is dated 2026-01-22. Finnrick, an independent testing programme, publishes 5 assays for Penguin Peptides: 4 met its Purity focus threshold (at least 99.5% purity, no more than 35% dosage deviation) and 1 did not. Most recent assay 16 Jun 2026.
Tested substances: GLOW 70mg, KLOW 80mg, Mots-c 40mg, BACTERIOSTATIC WATER 10ml, Epithalon 10mg, Nad+, Glutathione 1500mg.
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