Lipoprotein(a) mass concentration in serum

What Is Lipoprotein(a)?

Lipoprotein(a), or Lp(a), is a unique lipoprotein particle that combines cholesterol and a protein called apolipoprotein(a). Unlike other cholesterol types, Lp(a) is largely determined by genetics and doesn’t change much with diet or exercise. Elevated levels are associated with higher risks of atherosclerosis (plaque buildup in arteries) and cardiovascular events like heart attacks or strokes.

Why Might You Need This Test?

Your healthcare provider may order this test if you have a family history of heart disease, a history of blood clots, or if you’re at higher risk due to other health conditions. It’s also sometimes checked in people with certain genetic conditions or before procedures that increase bleeding risk.

How Is the Test Performed?

A blood sample is drawn from a vein, usually in your arm. The blood is processed to separate serum (the liquid part after clotting), and the test measures the mass concentration of Lp(a) using a specialized laboratory method.

What Do the Results Mean?

Results are reported in units of mass concentration (e.g., mg/dL or nmol/L), but exact reference ranges vary by lab. High levels may signal increased cardiovascular risk, prompting further evaluation or lifestyle changes.