Lipoprotein(a) [Lp(a)] concentration

What Is Lipoprotein(a)?

Lipoprotein(a) is a unique lipoprotein particle that combines cholesterol with a protein called apolipoprotein(a). While it shares some similarities with LDL (low-density lipoprotein), it behaves differently in the body and is associated with increased risk for blood clots and heart disease. Elevated levels may be harder to treat with standard cholesterol-lowering medications alone.

Why Might You Need This Test?

Your doctor may order this test if you have a history of heart disease, stroke, or blood clots, or if you have a family history of these conditions. It may also be recommended for people with high cholesterol or those undergoing risk assessments for cardiovascular health.

How Is the Test Performed?

A blood sample is drawn from a vein, usually in your arm. The sample is sent to a lab for analysis using an immunoassay method to measure lipoprotein(a) levels.

What Does the Test Result Mean?

Results are reported in milligrams per deciliter (mg/dL) or micrograms per milliliter (µg/mL). While specific reference ranges vary by lab, higher-than-normal levels may indicate an increased risk for cardiovascular events. Your doctor will interpret results in the context of your overall health.