Androstenedione, 1.0 mg/mL; 1 mL/ampoule. Androstenedione is a hormone and intermediate in the biochemical pathway for producing testosterone, estrone, and estradiol. This Certified Spiking Solution is suitable for use as starting material in linearity standards, calibrators, and controls for numerous LC/MS and GC/MS applications in endocrinology, clinical chemistry, neonatal screening, and sports testing. *The item is intended for analytical use only, and not be used for human or animal use, including cell cultures.