Most commonly measured in the evaluation of low testosterone (androgen deficiency) in men; also commonly used in the evaluation of women with signs and symptoms of excess male hormones (androgens).

It measures the amount of sodium in your blood.

Used to find abnormal substances called M proteins. The presence of M proteins can be a sign of a type of cancer called myeloma, or multiple myeloma.

The fecal occult blood test (FOBT) is a lab test used to check stool samples for hidden (occult) blood.