This test is often used to determibe level of Lipoprotein level in blood. Lp (a) or Lipoprotein (a) are molecules made of proteins and fat. They carry cholesterol and similar substances through the blood. They are made in the liver and are genetic variation of LDL (bad) cholesterol. They are very similar to LDL, or “bad” cholesterol. High Lp(a) in blood is a risk factor for coronary heart disease (CHD), cerebrovascular disease (CVD), atherosclerosis, thrombosis, and stroke. However, individuals without Lp(a) or with very low Lp(a) levels seem to be healthy.