Retatrutide lab test results by vendor
How each vendor's Retatrutide held up in independent third-party lab tests: purity, dose against the label, and how often vials failed.
What Is Retatrutide? 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
- 387
- Lab reports
- 219
- Vendors
- 40
- Vials failed
- 3.6%
- Median purity
- 99.70%
- Median dose vs label
- +8.5%
Results from Aug 2024 to Oct 2026. A vial fails if it's empty, under 95% pure, more than 20% under its label, or more than 50% over (14 of 387 vials).
Key facts
- VendorVerify holds lab results for 387 Retatrutide vials from 40 vendors, from 219 independent lab reports dated Aug 2024 to Oct 2026.
- 3.6% of Retatrutide vials on file failed (14 of 387), meaning empty, under 95% pure, more than 20% under label or more than 50% over.
- The median Retatrutide vial on file tested at 99.70% purity.
- The median Retatrutide vial on file held +8.5% compared with the amount on its label.
- 14 vendors have 5 or more Retatrutide lab reports and are ranked for Retatrutide.
Retatrutide vendors
| Vendor | Verdict | Score | Failed vials | Lab reports | Median dose vs label | Avg. purity | Vendor page |
|---|---|---|---|---|---|---|---|
| BFF/AMO | Above market | 96.7 | 0.0% | 63 | +3.5% | 99.70% | View vendor BFF/AMO |
| GYC | Above market | 90.7 | 0.0% | 17 | +10.6% | 99.64% | View vendor GYC |
| FSD | Above market | 90.2 | 0.0% | 9 | +12.2% | 99.52% | View vendor FSD |
| SPB | Above market | 89.7 | 0.0% | 6 | +9.0% | 99.84% | View vendor SPB |
| ZLZ | Above market | 89.6 | 0.0% | 5 | +6.2% | 99.59% | View vendor ZLZ |
| Uther | At market | 89.4 | 0.0% | 5 | +8.4% | 99.78% | View vendor Uther |
| ACR | At market | 89.2 | 0.0% | 5 | +7.1% | 99.58% | View vendor ACR |
| QST | At market | 88.1 | 0.0% | 7 | +10.4% | 99.57% | View vendor QST |
| SRY | At market | 88.0 | 0.0% | 11 | +14.0% | 99.46% | View vendor SRY |
| PGB | At market | 87.8 | 0.0% | 5 | +17.4% | 99.65% | View vendor PGB |
| TCI | At market | 86.5 | 0.0% | 12 | +16.9% | 99.56% | View vendor TCI |
| SSA | Below marketFailed vials | 83.0 | 8.5% | 25 | +9.8% | 99.13% | View vendor SSA |
| XTP | Below marketFailed vials | 74.3 | 34.0% | 5 | +8.8% | 97.36% | View vendor XTP |
| PTB | Below marketFailed vials | 71.4 | 42.1% | 5 | +7.9% | 97.86% | View vendor PTB |
| Not enough data to rank (fewer than 5 lab reports) | |||||||
| JEEP | Not ranked | 87.9 | 0.0% | 2 | +6.0% | 99.85% | View vendor JEEP |
| WBS | Not ranked | 87.4 | 0.0% | 1 | +2.0% | 99.70% | View vendor WBS |
| MPS | Not ranked | 87.3 | 0.0% | 2 | +11.3% | 99.90% | View vendor MPS |
| BDB | Not ranked | 87.2 | 0.0% | 1 | +7.2% | 99.88% | View vendor BDB |
| APS | Not ranked | 87.2 | 0.0% | 4 | +12.0% | 99.54% | View vendor APS |
| HPT | Not ranked | 87.2 | 0.0% | 1 | +9.5% | 99.90% | View vendor HPT |
| GB | Not ranked | 87.0 | 0.0% | 1 | +8.6% | 99.86% | View vendor GB |
| YC | Not ranked | 87.0 | 0.0% | 1 | +8.2% | 99.43% | View vendor YC |
| SNP | Not ranked | 87.0 | 0.0% | 4 | +20.3% | 99.56% | View vendor SNP |
| NP | Not ranked | 87.0 | 0.0% | 1 | +11.8% | 99.60% | View vendor NP |
| MSCI | Not ranked | 86.9 | 0.0% | 1 | +9.8% | 99.38% | View vendor MSCI |
| GrayHQ | Not ranked | 86.8 | 0.0% | 1 | +12.3% | 99.75% | View vendor GrayHQ |
| Reta-Peptide | Not ranked | 86.8 | 0.0% | 1 | +8.2% | 98.34% | View vendor Reta-Peptide |
| JYP | Not ranked | 86.7 | 0.0% | 1 | +14.7% | 99.48% | View vendor JYP |
| SBB | Not ranked | 86.5 | 0.0% | 1 | +17.3% | 99.78% | View vendor SBB |
| CHP | Not ranked | 86.3 | 0.0% | 1 | +19.3% | 99.28% | View vendor CHP |
| XPB | Not ranked | 86.2 | 0.0% | 1 | +23.1% | 99.70% | View vendor XPB |
| QSC | Not ranked | 86.1 | 0.0% | 1 | +19.5% | 98.34% | View vendor QSC |
| PDNM | Not ranked | 86.0 | 0.0% | 1 | +24.2% | 99.11% | View vendor PDNM |
| ABC | Not ranked | 85.5 | 0.0% | 2 | +27.3% | 99.71% | View vendor ABC |
| SSS | Not rankedFailed vials | 84.3 | 25.0% | 1 | +2.1% | 99.73% | View vendor SSS |
| ASC | Not rankedFailed vials | 79.8 | 33.3% | 3 | −4.9% | 99.48% | View vendor ASC |
| QYC | Not rankedFailed vials | 78.9 | 50.0% | 2 | +16.6% | 96.43% | View vendor QYC |
| LSPL | Not rankedFailed vials | 78.1 | 54.5% | 2 | +5.1% | 96.49% | View vendor LSPL |
| ZYH | Not rankedFailed vials | 77.9 | 100.0% | 1 | +53.5% | 99.25% | View vendor ZYH |
| Barn | Not rankedFailed vials | 76.3 | 100.0% | 1 | +0.7% | 89.06% | View vendor Barn |
Every Retatrutide vial against its label
One dot per vial, placed by how much it held compared with the amount on the label.
Dot chart of 338 vials (every Retatrutide vial on file), each placed by its measured amount compared with the label, from 50% under to 50% over. 105 are within 5% of the label, 226 are 5 to 20% under or more than 5% over, 7 are more than 20% under or more than 50% over, and 0 were empty.
Retatrutide: common questions
Which Retatrutide vendors pass lab testing?
Among vendors with at least 5 lab reports for Retatrutide, the highest scores currently go to BFF/AMO (score 96.7, 0.0% of vials failed), GYC (score 90.7, 0.0% of vials failed) and FSD (score 90.2, 0.0% of vials failed). 14 vendors are ranked for Retatrutide in all, and the table on this page lists every vendor's results. Rankings change as new reports arrive.
How often do Retatrutide vials fail testing?
14 of 387 Retatrutide vials on file failed (3.6%). A vial fails if it's empty, under 95% pure, more than 20% under its label, or more than 50% over it.
Are Retatrutide vials underdosed?
Usually not; if anything they run over. The typical Retatrutide vial on file held +8.5% 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 Retatrutide vials test at?
The median Retatrutide vial tested at 99.70% 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 Retatrutide results come from?
From 219 independent lab reports, mostly commissioned by buyers, covering 387 vials from 40 vendors, dated Aug 2024 to Oct 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 Retatrutide?
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.