Lipoprotein(a) Subfraction Profile by Electrophoresis (Serum)

What Is Lipoprotein(a)?

Lipoprotein(a) is a lipoprotein particle that combines cholesterol with a distinct protein called apolipoprotein(a). It is distinct from other cholesterol-carrying particles like LDL (low-density lipoprotein). Lipoprotein(a) is believed to play a role in the buildup of plaque in arteries, contributing to heart disease risk. This test helps identify variations in its composition, which may influence how it behaves in the body.

Why Might You Need This Test?

Your healthcare provider may order this test if you have a family history of heart disease, high cholesterol, or other risk factors for cardiovascular conditions. It may also be used to monitor treatment progress in patients with known lipoprotein(a) abnormalities or those undergoing therapies targeting lipoprotein metabolism.

How Is This Test Performed?

Blood is drawn from a vein in your arm. The sample is then processed to separate lipoprotein(a) particles using electrophoresis, a technique that sorts proteins based on their electrical charge. Different subfractions of lipoprotein(a) are identified and measured.

What Do the Results Mean?

Results provide detailed information about the distribution of lipoprotein(a) subfractions, which can help assess the overall burden of this particle type in your blood. While specific reference ranges vary by lab, higher concentrations or specific subfraction patterns may correlate with increased cardiovascular risk.