Dr. Don Catlin joined the UCLA School of Medicine faculty in 1972 and founded the UCLA Olympic Laboratory in 1982 to conduct the doping control tests for the 1984 Olympics. Since then, the laboratory's service group has provided drug education and urine tests to national and international sports organizations. A world-renowned expert, Dr. Catlin is responsible for detecting the previously imperceptible use of the blood enhancer, darbepoetin, and the designer steroids, norbolethone, THG, madol, and 6-OXO. He is also the developer of the carbon isotope ratio (CIR) test, which differentiates between natural and pharmaceutical testosterone.