By David T. Moran, MD An HDL test measures the level of high-density lipoprotein, or HDL, in the blood. HDL is known as the good carrier for cholesterol.
Cholesterol is a waxy substance that is used for many body processes.
The HDL test is generally done along with a total cholesterol and LDL test . The HDL test is usually done as part of a lipid profile test that also includes total cholesterol, LDL, and triglycerides. An HDL test may be ordered to evaluate a person's risk for various conditions. Adults 20 years or over should be tested every five years for cholesterol, LDL, HDL, and triglycerides. An HDL test may also be ordered to evaluate disorders of the kidney, liver, or thyroid gland.