Markus Koistinen (born 1 May 1970) is a retired Finnish shot putter.
[4] He also competed at the 1993 World Championships without reaching the final.
[1] His personal best put was 20.50 metres, achieved in June 1996 in Parkano.
However, just weeks after achieving his lifetime best, he tested positive for hCG and was banned from the sport.
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