The German National Paralympic Committee said that although finasteride is a non-performance enhancement medication, it can be used to cover up drugs that do. Coskun, 33, insisted the positive result might result from using a drug for hair loss treatment.

That brought to four the number of athletes caught using illegal substances. Pakistani powerlifter Naveed Ahmed Butt had been banned after failing a doping test on Sept. 4.

Lei Lina of China returns a shot during the women's individual class 9 gold medal match against her compatriot Liu Meili at the Beijing 2008 Paralympic Games table tennis event in Beijing, China, Sept. 11, 2008. Lei won the match 3-0 and claimed the title

The IPC said it plans to conduct 1,100 tests at the Sept. 6-17 Games. So far, 461 tests, both in and out of competition, have been carried out. More than 4,000 athletes from 147 countries and regions compete here in 20 sports in five different categories of disability, with a total of 472 gold medals at stake

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