Tetrahydrogestrinone (THG) is a potent anabolic steroid developed by Patrick Arnold for BALCO, which supplied illegal steroids to athletes. THG was undetectable in urine tests for years, earning it the nickname The Clear. Its use is prohibited by the World Anti-Doping Agency and it is a Schedule III controlled substance due to its dangerous side effects. Long-term use of steroids can cause infertility, excessive hair growth, and may reduce the effectiveness of the immune system.
Tetrahydrogestrinone (THG) is an anabolic steroid similar to gestrinone and trenbolone. Patrick Arnold developed the steroid for an American supplement company called Bay Area Laboratory Co-operative (BALCO) by making slight modifications to gestrinone and trenbolone. These changes made the drug undetectable in urine tests for many years, earning it the nickname The Clear.
BALCO has been investigated many times over allegations that the company supplied illegal steroids to athletes. On October 18, 2005, Victor Conte, the founder of BALCO, was sentenced to four months in prison and four months of house arrest for a plea deal in a case involving his role in providing athletes with undetectable steroids. , like THG.
Anabolic steroids bind to androgen receptors on cells in the body and stimulate the growth of muscle tissue. Tetrahydrogestrinone has never been commercially marketed, but the drug was distributed among some of the best athletes in the United States and Europe. Tetrahydrogestrinone is an extremely potent steroid, and the drug was never approved for medical use.
The World Anti-Doping Agency prohibits the use of tetrahydrogestrinone by athletes, both in and out of competition. While the drug went undetected for several years, an anonymous trainer sent a sample of the steroid to a doctor named Don Catlin, who was the director of the UCLA Olympic Analysis Laboratory in Los Angeles, in the summer of 2003. Dr. Catlin was able to analyze the substance and develop a detection method.
The United States Congress added tetrahydrogestrinone to the Anabolic Steroids Control Act of 2004, listing it as a Schedule III controlled substance. These are only legal to own and use with a prescription from a doctor. Although some anabolic steroids have legitimate medical uses, doctors typically do not prescribe THG due to its potency and potentially dangerous side effects.
Using steroids for long periods of time without the supervision of a medical professional can cause many negative side effects. Long-term use of steroids can cause infertility, excessive hair growth, and may reduce the effectiveness of the immune system. Anabolic steroids can also cause liver tumors, aggressive behavior, and can contribute to high total cholesterol levels.
There have been no published medical studies on the side effects of THG because it was never developed for medicinal use. However, because it is more potent than any commercially available steroid, side effects may be worse or may occur more quickly than in people using medically approved steroids under a doctor’s supervision.
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