Third-party lab testing: 17 independent Janoshik assays on file, covering 13 substances, median measured purity 99.6%, most recent test 2026-03-23.
Canadian peptide research supplier offering individual compounds and custom blends. Publishes third-party lab results through Janoshik analytical testing.
Growth Guys Canada is listed as active. Canadian vendor with Janoshik-verified test results. Offers peptide blends and individual compounds.
Community standing: 4.3/5 from 52 community reviews. Ratings of anonymous sellers of unregulated products are the weakest signal on this page; the assay and grading records carry more.
| Substance | Measured purity | Test date |
|---|---|---|
| Retatrutide | 99.40% | 2026-03-23 |
| Mots-c | 99.76% | 2026-01-16 |
| Mots-c | 99.85% | 2026-01-16 |
| Retatrutide | 99.61% | 2026-01-15 |
| Human Growth Hormone | 97.44% | 2026-01-08 |
| Human Growth Hormone | 97.47% | 2025-12-12 |
| Selank | 99.88% | 2025-11-27 |
| Sermorelin | 99.74% | 2025-09-25 |
| Tirzepatide | 99.33% | 2025-01-22 |
| Epitalon | 99.89% | 2025-01-22 |
| Lcarnitine | not reported | 2026-01-19 |
| Human Menopausal Gonadotropin (hmg) | not reported | 2026-01-04 |
10 of these 12 assays report a measured purity figure. The other 2 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 17 lab tests for Growth Guys Canada
| Status | Active |
|---|---|
| Community rating | 4.3/5 from 52 reviews |
| Independent assays on file | 17 |
| Median measured purity | 99.6% |
| Certificates of analysis | Vendor states COAs are available |
| Named third-party lab | Janoshik |
| Year established | 2022 |
| Production country | Canada |
| Vendor type | Research-use supplier |
| Payment methods | Credit Card, Cryptocurrency, E-Transfer |
| Last tested | 2026-03-20 |
These details were read from Growth Guys Canada's own website on 2026-08-10. Pages consulted:
Growth Guys Canada is listed as active and we hold 17 independent Janoshik assays on file, median measured purity 99.6%; 4.3/5 from 52 community reviews. That is evidence about the batches that were tested or published, not a guarantee about the vial you receive.
Yes. We hold 17 third-party Janoshik assays for Growth Guys Canada, covering 13 substances, with a median measured purity of 99.6%. The most recent is dated 2026-03-23.
Tested substances: Retatrutide, Mots-c, Human Growth Hormone, Selank, Sermorelin, Tirzepatide, Epitalon, GLOW Blend, Melanotan-2.
Similar vendors: MOB Peptides, Reta-Peptide, Qingdao Sigma Chemical QSC, Eros Peptides, Polaris Peptides, Peptide Crafters, Mei Peptide, Freedom Health.
Popular peptides: Semaglutide, Tirzepatide, Retatrutide, BPC-157, CJC-1295, Ipamorelin.
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