Tesamorelin lab test results by vendor
How each vendor's Tesamorelin held up in independent third-party lab tests: purity, dose against the label, and how often vials failed.
What Is Tesamorelin? Benefits, Evidence & RisksWhat it does, what the research shows, and the known risks.For research use only. VendorVerify sells nothing and takes no money from vendors. No affiliate links, no coupon codes, no paid rankings. How scores work
- Vials tested
- 35
- Lab reports
- 26
- Vendors
- 12
- Vials failed
- 11.4%
- Median purity
- 99.35%
- Median dose vs label
- +6.0%
Results from Nov 2024 to Jul 2026. A vial fails if it's empty, under 95% pure, more than 20% under its label, or more than 50% over (4 of 35 vials).
Key facts
- VendorVerify holds lab results for 35 Tesamorelin vials from 12 vendors, from 26 independent lab reports dated Nov 2024 to Jul 2026.
- 11.4% of Tesamorelin vials on file failed (4 of 35), meaning empty, under 95% pure, more than 20% under label or more than 50% over.
- The median Tesamorelin vial on file tested at 99.35% purity.
- The median Tesamorelin vial on file held +6.0% compared with the amount on its label.
- No vendor yet has the 5 Tesamorelin lab reports needed to be ranked for Tesamorelin.
Tesamorelin vendors
| Vendor | Verdict | Score | Failed vials | Lab reports | Median dose vs label | Avg. purity | Vendor page |
|---|---|---|---|---|---|---|---|
| Not enough data to rank (fewer than 5 lab reports) | |||||||
| Uther | Not ranked | 89.3 | 0.0% | 4 | +8.8% | 99.72% | View vendor Uther |
| SSA | Not ranked | 88.6 | 0.0% | 4 | −1.3% | 99.20% | View vendor SSA |
| TCI | Not ranked | 88.1 | 0.0% | 3 | +12.8% | 99.35% | View vendor TCI |
| SPB | Not ranked | 88.1 | 0.0% | 2 | +6.3% | 99.48% | View vendor SPB |
| FSD | Not ranked | 87.9 | 0.0% | 2 | +4.7% | 99.22% | View vendor FSD |
| QST | Not ranked | 87.3 | 0.0% | 2 | — | 99.64% | View vendor QST |
| ABC | Not ranked | 87.1 | 0.0% | 1 | +1.9% | 99.17% | View vendor ABC |
| GYC | Not ranked | 87.0 | 0.0% | 2 | +16.2% | 99.71% | View vendor GYC |
| ASC | Not ranked | 86.4 | 0.0% | 1 | +18.4% | 99.31% | View vendor ASC |
| SNP | Not ranked | 86.3 | 0.0% | 1 | +21.0% | 99.58% | View vendor SNP |
| WBS | Not ranked | 85.6 | 0.0% | 1 | −15.6% | 98.76% | View vendor WBS |
| SRY | Not rankedFailed vials | 72.4 | 66.7% | 3 | −1.0% | 96.59% | View vendor SRY |
Every Tesamorelin vial against its label
One dot per vial, placed by how much it held compared with the amount on the label.
Dot chart of 31 vials (every Tesamorelin vial on file), each placed by its measured amount compared with the label, from 50% under to 50% over. 11 are within 5% of the label, 17 are 5 to 20% under or more than 5% over, 3 are more than 20% under or more than 50% over, and 0 were empty.
Tesamorelin: common questions
Which Tesamorelin vendors pass lab testing?
No vendor has 5 or more lab reports for Tesamorelin yet, so none is ranked. The table on this page lists every vendor's results so far.
How often do Tesamorelin vials fail testing?
4 of 35 Tesamorelin vials on file failed (11.4%). A vial fails if it's empty, under 95% pure, more than 20% under its label, or more than 50% over it.
Are Tesamorelin vials underdosed?
Usually not; if anything they run over. The typical Tesamorelin vial on file held +6.0% compared with the amount on its label. Individual vials vary much more than that, and the chart on this page shows every one.
What purity do Tesamorelin vials test at?
The median Tesamorelin vial tested at 99.35% purity. We count anything under 95% as a failed vial and give full marks for purity at 99.5% or higher, because small differences above that are within normal lab-to-lab variation.
Where do these Tesamorelin results come from?
From 26 independent lab reports, mostly commissioned by buyers, covering 35 vials from 12 vendors, dated Nov 2024 to Jul 2026. VendorVerify doesn't test anything itself. A report a vendor paid for is only used if the lab can verify it, and it is marked as vendor-commissioned and counts at half weight.
Does VendorVerify sell Tesamorelin?
No. VendorVerify doesn't sell peptides of any kind. VendorVerify sells nothing and takes no money from vendors. No affiliate links, no coupon codes, no paid rankings.