HDL is a blood lipoprotein, one of the blood lipid tests is a lipoprotein that is beneficial to the body.
HDL can be isolated by ultracentrifugation. Cholesterol in human blood lipids is neither water-soluble nor blood-soluble, and must be bound to carrier proteins in order to be soluble. Cholesterol binds to different carrier proteins to form high-density lipoproteins (HDL) and low-density lipoproteins (LDL).
HDL is mainly synthesized by the liver. HDL particles are small, can freely enter and exit the blood vessel wall can transport cholesterol, triglycerides, etc. to the liver into bile acids excreted from the body, to keep the blood vessels open, the blood vessels have a certain degree of protection, the normal indicators have to reduce the risk of cardiovascular and cerebrovascular diseases.
HDL less than 1.0mmol/L, accompanied by obvious physical discomfort is recommended to consult a doctor.