AOD-9604 is a 16-amino-acid fragment of human growth hormone marketed for fat-loss research. The short sequence is cheap to substitute and frequently truncated or replaced with bulking agent in the AU grey market.
GH fragment (177-191)
Also known as: Anti-Obesity Drug 9604
Why test AOD-9604?
AOD-9604 vials are very small (typically 2 mg) and almost entirely mannitol by mass. Quantitative HPLC is the only way to confirm actual mg per vial. LC-MS catches sequence substitution.
Common issues we find
Under-fill - labelled 2 mg, contains <1 mg
Substitution with GHRP-2 or generic GH fragments
Mannitol-only vials
Frequently asked questions
How is AOD-9604 tested?
LC-MS for identity, HPLC for purity, quantitative HPLC for actual mg per vial. A$549 per vial at LabDoc with COA in 3-7 business days.
Why is AOD-9604 commonly under-filled?
Because the dose is tiny (300 mcg) the vial is mostly bulking agent. Visual inspection cannot detect under-fill - only quantitative HPLC can.
What purity should AOD-9604 be?
Reference-grade AOD-9604 is ≥97% by HPLC. Sequence purity matters more than vial purity because mannitol is excluded from the HPLC peak.