Male Hormone Levels

Hormone to Test

Normal Values

What value means

Testosterone

270-1100 ng/dl

Testosterone production is stimulated by Leydig cells in the testicles. Low levels of testosterone combined with low FSH and LH are diagnostic of hypogonadotropic hypogonadism.

Free Testosterone

.95-4.3 ng/dl

% Free Testosterone

.3% - 5%

A normal male has about 2% free, unbound testosterone

Follicle Stimulating Hormone (FSH)

1-18 mIU/ml

Basic hormone testing for males often only includes FSH and testosterone.

Prolactin

< 20 ng/ml

A level two or three times that of normal may indicate a pituitary tumor, such as a prolactinoma, which may lead to decreased sperm production. Elevations can be treated with bromocriptine.

Luteinizing Hormone (LH)

2-18 mIU/ml

LH stimulates Leydig cells and production of testosterone. A problem with LH levels alone is rarely seen, so testing is only needed if testosterone level is abnormal.

Estradiol (E2)

10-60 pg/ml

Progesterone (P4)

.3-1.2 ng/ml