A graduate of
Seoul National University's Department of Chemistry, Park moved to the United States to earn a PhD from
Johns Hopkins University and then did
postdoctoral research at
Georgetown University before joining the faculty of Georgetown and the
University of Maryland. He later naturalised as a U.S. citizen and worked for the
government of Maryland's Department of Health and Mental Hygiene. Park moved back to South Korea in 1986, where he served as head of the
Korea Institute of Science and Technology's Applied Sciences Division. He resumed his original South Korean citizenship and
relinquished U.S. citizenship in 1996 before joining the Food and Drug Administration, as South Korea did not permit
dual citizenship at the time. In his capacity at KIST, Park was involved with
drug testing at the
1988 Summer Olympics in Seoul as head of the Olympic Doping Control Center. There, he was responsible for the detection of
stanozolol in urine and blood samples from
Ben Johnson which resulted in the latter being stripped of his gold medal. Park took great care in performing the
urinalysis, and even repeated the test procedure from scratch to be entirely sure of his results before reporting the sample to International Olympic Committee officials; he did not find out to whom the sample belonged until days later, as the
samples were not labelled by name per standard procedure.
ABC World News named him "Person of the Week" on 30 September 1998 for his role in bringing the scandal to light. He also detected marijuana usage by three athletes, though no action was taken against them as marijuana was not a banned
performance-enhancing substance. Park clashed with Olympics officials over other aspects of how he did his job, and made angry comments to the
Washington Post about false samples with trace amounts of banned substances which had been planted among genuine samples in his lab. His work at the Olympic Doping Control Center earned him the
Scientist of the Year Award by the Korea Science Journalists Association. ==As head of the Food and Drug Administration==