Immunoextraction - tandem mass spectrometry method for measuring intact human chorionic gonadotropin, free beta, and beta core fragment in urine

Analysis of Human Chorionic Gonadotropin or hCG is usually associated with monitoring or detecting pregnancy. It is also a protein tumor marker for some cancers. In males, hCG stimulates testosterone production and has the potential to be abused by athletes in an attempt to enhance performance in sports.