[Side-effects and doping control of anabolic steroids].

We present a case of a 26 year-old male body-builder who had used the anabolic steroids (AS) trenbolone and stanozolol for 10 weeks. After four weeks creatine-kinase (CK) including CK-B (cardiac specific isoenzymes) levels were elevated five to ten times. He was without cardiac symptoms and electrocardiography was normal. Three weeks after he stopped using AS, CK and CK-B levels had normalized. One of the drugs, stanozolol could not be detected by the doping-control, maybe because of a fast excretion time. Sale, use and delivery of AS is prohibited in Denmark, but is used in spite of the prohibition. It is important to spread knowledge about the risks of AS among the users.