Lipoprotein(a) [Lp(a)] is a low-density lipoprotein (LDL)-like lipoprotein particle recently described as a risk factor for premature coronary heart disease, stroke, and atherosclerosis. Structurally, Lp(a) is similar to LDL in that it has comparable lipid composition and contains apolipoprotein B-100 (apo B-100). In addition, Lp(a) contains the glycoprotein apolipoprotein(a) [apo(a)], which is...