Also known as: Total testosterone
Formal name: Testosterone
Related tests: FSH, LH, SHBG, DHEAS, Free and bioavailable testosterone, Estradiol (see Estrogen), DHT, Gonadotropin-releasing hormone
Why should I do it?
To determine abnormal testosterone level in males and females; in males, an abnormal level may help to explain difficulty getting an erection (erectile dysfunction), Inability of your partner to get pregnant (infertility), or premature or delayed puberty; in females, to explain the appearance of masculine physical features (virilization), Inability to get pregnant, and as a marker for polycystic ovary syndrome (PCOS)
When should I do it?
If you are male and your doctor thinks that you may be infertile or if you are unable to get or maintain an erection; if you are a boy with either early or delayed sexual Maturity; if you are a female but have male traits, such as a low voice or excessive body hair (hirsutism), or have amenorrhea, or are infertile
What Kind of Sample is Needed?
A blood sample drawn from a vein in your arm
Test Preparation Needed?