Comparing the ratio of testosterone to epitestosterone can then indicate whether testosterone or a precursor has been taken.
因此测定睾酮与表睾酮的比例，能够反映出(运动员)是否服用了睾酮或者它的前体药物。
2
The test usually employed for testosterone abuse relies on measuring the ratio of two chemicals found in the urine: testosterone glucuronide (TG) and epitestosterone glucuronide (EG).