Gonadotropins (FSH, LH) and testosterone are the prime regulators of germ cell development. Chronic systemic diseases such as renal failure, cirrhosis, and malnutrition are often associated with low levels of testosterone and normal levels of FSH and LH.
Tests for impotence and infertility include FSH, LH and testosterone.
Normal FSH levels in adult males are typically between 1.5 to 12.4 mIU/mL. Normal LH levels in adult males are typically between 0.7 to 7.9 IU/L. The normal range of testosterone levels in healthy adult males is between 280 to 1,100 nanograms per deciliter (ng/dL)
