androstenedione (disambiguation) androstenedione (disambiguation) androstenedione may refer to: 4-androstenedione (androst-4-ene-3,17-dione) – an endogenous weak androgen and estrogen and intermediate to/prohormone of testosterone 5-androstenedione (androst-5-ene-3,17-dione) – a prohormone of testosterone and hence an anabolic-androgenic steroid 1-androstenedione (5α-androst-1-ene-3,17-dione) – a prohormone of 1-testosterone (δ1-dht) and hence an anabolic-androgenic steroid not to be confused with androstanedione, androstenediol, or androstanediol.