Epitestosterone is the biologically inactive 17-alphahydroxy epimer of testosterone. The interconversion between epitestosterone and testosterone is assumed to be very small in man, and only an insignificant fraction of testosterone (a maximum of 1-2%) is metabolized to epitestosterone in the body. Most healthy males exhibit a testosterone to epitestosterone ratio (T/E ratio) in urine of about 1:1.
Epi-testosterone is not androgenic like testosterone. It happens to be produced in about the same concentrations as testosterone (this is an approximate relationship). This can be helpful to assess testosterone therapy and rare cases where testosterone may have other complexities.
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16a-OH Estrone, 2-MeO E1/2-OH E1, 2-MeO Estradiol, 2-MeO Estrone, 2-OH (E1 + E2)/16-a- OH E1, 2-OH Estradiol, 2-OH Estrone, 20a- Dihydroprogesterone, 3a- Dihydroprogesterone, 4-MeO E1/4-OH E1, 4-MeO E2/4-OH E2, 4-MeO Estradiol, 4-MeO Estrone, 4-OH Estradiol, 4-OH Estrone, 5a,3a-Androstanediol, 5a-DHT, Allopregnanediol, Allopregnanolone, Androstenedione, Androsterone, Bisphenol A, Corticosterone, Cortisol/Cortisone, Creatinine (1st morning), Creatinine (2nd morning), Creatinine (Evening), Creatinine (Night), Creatinine (pooled), Deoxycorticosterone, DHEA, E3/(E1+E2), Epi-Testosterone, Estradiol, Estriol, Estrone, Etiocholanolone, Free Cortisol (1st Morning), Free Cortisol (2nd Morning), Free Cortisol (Evening), Free Cortisol (Night), Free Cortisone (1st Morning), Free Cortisone (2nd Morning), Free Cortisone (Evening), Free Cortisone (Night), Melatonin (1st Morning), Melatonin (2nd Morning), Melatonin (Evening), Melatonin (Night), Pgdiol/E2, Pregnanediol, T/Epi-T, Testosterone, Tetrahydrocortisol, Tetrahydrocortisone, Total Cortisol, Total Cortisone