Mazdutide lab test results by vendor
How each vendor's Mazdutide held up in independent third-party lab tests: purity, dose against the label, and how often vials failed.
What Is Mazdutide? 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
- 7
- Lab reports
- 4
- Vendors
- 4
- Vials failed
- 0.0%
- Median purity
- 99.53%
- Median dose vs label
- +4.5%
Results from Aug 2024 to May 2026. A vial fails if it's empty, under 95% pure, more than 20% under its label, or more than 50% over (0 of 7 vials).
Key facts
- VendorVerify holds lab results for 7 Mazdutide vials from 4 vendors, from 4 independent lab reports dated Aug 2024 to May 2026.
- 0.0% of Mazdutide vials on file failed (0 of 7), meaning empty, under 95% pure, more than 20% under label or more than 50% over.
- The median Mazdutide vial on file tested at 99.53% purity.
- The median Mazdutide vial on file held +4.5% compared with the amount on its label.
- No vendor yet has the 5 Mazdutide lab reports needed to be ranked for Mazdutide.
Mazdutide 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) | |||||||
| QSC | Not ranked | 87.2 | 0.0% | 1 | −3.5% | 98.88% | View vendor QSC |
| PGB | Not ranked | 87.0 | 0.0% | 1 | +4.7% | 99.62% | View vendor PGB |
| Uther | Not ranked | 87.0 | 0.0% | 1 | +9.6% | 99.56% | View vendor Uther |
| ZYH | Not ranked | 85.5 | 0.0% | 1 | −19.3% | 99.46% | View vendor ZYH |
Every Mazdutide vial against its label
One dot per vial, placed by how much it held compared with the amount on the label.
Dot chart of 7 vials (every Mazdutide vial on file), each placed by its measured amount compared with the label, from 50% under to 50% over. 4 are within 5% of the label, 3 are 5 to 20% under or more than 5% over, 0 are more than 20% under or more than 50% over, and 0 were empty.
Mazdutide: common questions
Which Mazdutide vendors pass lab testing?
No vendor has 5 or more lab reports for Mazdutide yet, so none is ranked. The table on this page lists every vendor's results so far.
How often do Mazdutide vials fail testing?
0 of 7 Mazdutide vials on file failed (0.0%). A vial fails if it's empty, under 95% pure, more than 20% under its label, or more than 50% over it.
Are Mazdutide vials underdosed?
Not by much on average. The typical Mazdutide vial on file held +4.5% 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 Mazdutide vials test at?
The median Mazdutide vial tested at 99.53% 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 Mazdutide results come from?
From 4 independent lab reports, mostly commissioned by buyers, covering 7 vials from 4 vendors, dated Aug 2024 to May 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 Mazdutide?
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.