Epitestosterone

Epitestosterone
Identifiers
	IUPAC name 17-hydroxy-10,13-dimethyl-1,2,6,7,8,9,11,12,14,15,16,17- dodecahydrocyclopenta[a]phenanthren-3-one;
CAS Number	481-30-1;
CompTox Dashboard (EPA)	DTXSID8022329 ;
ECHA InfoCard	100.169.813
Chemical and physical data
Formula	C19H28O2

Epitestosterone is a natural steroid, chemically similar to testosterone.

Tests to determine the ratio of testosterone to epitestosterone in urine are used to find athletes who are doping. A normal healthy person has a ratio of about 1:1 testosterone to epitestosterone in their urine^[1].

It was revealed on July 27, 2006 that Floyd Landis, winner of the 2006 Tour de France, had a testosterone to epitestosterone ratio in violation of the 4:1 limit imposed by the race organizers, suggesting doping, though this may have been caused by a low epitestosterone level rather than an elevated testosterone level. It is also possible that an elevated testosterone level could be related to his hypothyroidism.

External links

Landis Fails Drug Test After Triumph in Tour de France

Notes

^ "Substances: Testosterone to epitestosterone (T/E) ratio". Australian Government. Tuesday, February 28, 2006. {{cite news}}: Check date values in: |date= (help)

[1] "Substances: Testosterone to epitestosterone (T/E) ratio". Australian Government. Tuesday, February 28, 2006. {{cite news}}: Check date values in: |date= (help)

[1]