Anabolic Steroid Control Act of 2003 - Amends the Anabolic Steroid Control Act of 1990 to modify the definition of "anabolic steroid" to include tetrahydrogestrinone (THG), androstenedione, and specified related chemicals.

Authorizes the Attorney General, upon the recommendation of the Secretary of Health and Human Services, to exempt from regulation any compound, mixture, or preparation that contains any anabolic steroid, that is intended for administration to a human being or an animal, and that does not present any significant potential for abuse because of its concentration, preparation, formulation, or delivery system.

Directs the U.S. Sentencing Commission to review the Federal sentencing guidelines with respect to offenses involving anabolic steroids and consider amending such guidelines to provide for increased penalties.

Directs the Secretary to: (1) award grants to enable public and nonprofit private entities to carry out science-based education programs in elementary and secondary schools to highlight the harmful effects of anabolic steroids; and (2) ensure that the National Survey on Drug Use and Health includes questions concerning the use of anabolic steroids.