Tirzepatide is the most-tested peptide in Australia. Because it has a legitimate prescription form (Mounjaro), grey-market vials are constantly compared against the original - and frequently fall short on both identity and content.
GLP-1 / GIP dual agonist
Also known as: Mounjaro / Zepbound active
Why test Tirzepatide?
Tirzepatide is dose-sensitive and the gap between a real 15 mg vial and an under-filled 10 mg vial is the difference between therapeutic and useless. Independent quantitative HPLC is the only way to know.
Common issues we find
Under-fill - labelled 15 mg, contains 8-12 mg
Substitution with semaglutide
Degradation peaks from poor cold-chain handling
Frequently asked questions
Is grey-market tirzepatide the same as Mounjaro?
Sometimes yes, often no. We have published COAs in Australia showing the same vendor producing one batch at 98% and another at 73%. Always test a batch before relying on it.
Can LabDoc test prescription Mounjaro?
Yes - we run identity and purity on prescription product as well. Many users do this to establish a reference baseline before testing grey-market alternatives.