Lipoprotein(a) [Lp(a)] concentration, measured by immunoassay

What Is Lipoprotein(a)?

Lipoprotein(a) is a unique type of lipoprotein (a fat-protein particle that transports cholesterol) found in your blood. It contains both cholesterol and a protein called apolipoprotein(a). While it shares some similarities with LDL (low-density lipoprotein, or 'bad' cholesterol), lipoprotein(a) has its own distinct role in health. High levels may increase your risk of heart disease and blood vessel issues by promoting plaque buildup in arteries.

Why Might You Need This Test?

Your doctor may order this test if you have a family history of early heart disease, certain genetic conditions, or if you’re at higher risk for cardiovascular problems. It may also be used to monitor treatment for conditions like atherosclerosis or to guide preventive care.

How Is the Test Performed?

A blood sample is taken from a vein in your arm. The sample is sent to a lab where it’s analyzed using an immunoassay method to measure lipoprotein(a) levels.

What Do Results Mean?

Results are reported in milligrams per deciliter (mg/dL) or micrograms per milliliter (µg/mL). While there are no strict reference ranges for everyone, higher levels may be associated with increased cardiovascular risk. Your doctor will interpret results in the context of your overall health.