Testosterone, decreased
More common causes
Chronic kidney disease
Liver cirrhosis
Hereditary hemochromatosis
Acquired immunodeficiency syndrome
Down's syndrome
Less common causes
Cryptorchidism
Klinefelter syndrome
Myotonic dystrophy
Hypogonadism
Uncommon causes
Testicular trauma
Galactose-1-phosphate uridyltransferase deficiency
Pharmacological causes
Caffeine citrate
Mitotane
Morphine sulfate
Morphine sulfate ER
Oxymorphone hydrochloride
Prednisolone
Prednisolone acetate
Ramelteon
Sirolimus
Sufentanil
Tapentadol hydrochloride