Definition Hyperlipidemia refers to elevated levels of plasma lipids. This includes cholesterol, cholesterol esters, phospholipids and triglycerides. Lipids are found in blood plasma and are bound to proteins. In this form, they are called lipoproteins. There are several forms of lipoproteins: chylomicrons, very low-density lipoproteins (VLDL), intermediate-density lipoproteins (IDL), low-density lipoproteins (LDL), high-density lipoproteins (HDL). […]