Masking the Use of Anabolic Steroids

There are a few ways an athlete can attempt to mask anabolic steroid use, these include diuretics and uricosuric. The following chart shows how masking agents are used and how they work:

Drug Group	Drug or Effect	How drug masks steroid use
Uricosuric Agents	Probenecid	Decreases entry of steroids into the urine
Diuretics	Spironolactone, Furosemide	Dilutes steroid concentration in the urine
Epitestosterone	Decreases Testosterone to Epitestosterone ratio	Reduces detection of testosterone usage