Reporting the Second Designer Steroid: THG

In 2003, Dr. Catlin identified and developed a test for THG, or tetrahydrogestrinone, the second reported designer anabolic steroid. This discovery famously came from a sample contained in a used syringe delivered anonymously to USADA (United States Anti-Doping Agency), who subsequently passed it along to Dr. Catlin for testing. THG was the active ingredient in “The Clear,” a previously “undetectable steroid” created and distributed by BALCO to some top American and British Olympic and professional athletes. Dr. Catlin credited his large team of capable researchers and chemists with finding the substance and developing a new test for it, saying the accomplishments “took all the skills that are represented in this lab.” In 2009, Newsweek magazine named coach Trevor Graham’s decision to send the syringe to USADA one of the decade’s “Top-10 History-Altering Decisions.”

For more about Dr. Catlin and the BALCO story, read this early Washington Post article by Amy Shipley: “One Mastermind Behind Two Steroids,” July 29, 2004.
http://www.washingtonpost.com/wp-dyn/articles/A22151-2004Jul28.html

Catlin DH, Sekera MH, Ahrens BD, Starcevic B, Chang YC, Hatton CK. Tetrahydrogestrinone: discovery, synthesis, and detection in urine. Rapid Communications in Mass Spectrometry 2004. 18: 1245-9.