Peptide
Tirzepatide
Every Tirzepatide vial anyone has sent in, worst first. 2 of 4 fell short of the published limits — a median 6 points above the record as a whole.
Every Tirzepatide result
- 22Sovereign Group BuyGroup buy · 10 mg / vial, measured 8.1 mg / vial19% underdosed · 3 impurity peaks · Endotoxin 4× limit +2 moreBatch TZ-2406-B · Jun 18, 2026
- 63Northgate ResearchResearch supplier · 10 mg / vial, measured 8.9 mg / vial11% underdosed · 2 impurity peaksBatch NG-2406 · Jun 5, 2026
- 88Harbor RxCompounding pharmacy · 10 mg / vial, measured 9.9 mg / vial2 impurity peaksBatch HR-2406 · Jun 12, 2026
- 96Northlake TelehealthTelehealth clinic · 10 mg / vial, measured 10.0 mg / vialBatch NL-2404 · May 20, 2026
What Tirzepatide is tested against
The same panel runs on every vial, and these limits do not move between sellers. A result is not a judgement call — it is a measurement against a published line.