Lipoprotein (a) Blood Test Kit

Lipoprotein(a), commonly written as Lp(a) and pronounced "L-P-little-a," is a lipoprotein particle produced by the liver that consists of an LDL-like core (containing cholesterol and apolipoprotein B) with an additional protein called apolipoprotein(a) wrapped around it. This unique structure makes Lp(a) particularly problematic: it has all the atherogenic (artery-clogging) properties of LDL cholesterol, PLUS the apolipoprotein(a) portion inhibits fibrinolysis (the body's natural clot-dissolving system), making blood clots more likely to persist and grow. Lp(a) contributes to cardiovascular disease through multiple mechanisms. It penetrates the artery wall and promotes atherosclerotic plaque formation, carries pro-inflammatory oxidised phospholipids that damage arteries, interferes with the body's ability to dissolve blood clots, and promotes calcification of the aortic valve. Elevated Lp(a) is associated with increased risk of coronary heart disease, stroke, peripheral artery disease, heart failure, and calcific aortic stenosis (hardening of the aortic valve). What makes Lp(a) unique among cardiovascular risk factors is that it's almost entirely genetically determined—over 90% of the variation in Lp(a) levels between people is due to variations in the LPA gene. Unlike LDL cholesterol, Lp(a) is not significantly lowered by diet, exercise, or statins. Your Lp(a) level is set by your genes and remains relatively stable throughout your adult life. Approximately 20-25% of the global population has elevated Lp(a) (above 50 mg/dL or 125 nmol/L), making it one of the most common genetic cardiovascular risk factors. Lp(a) is reported in either mg/dL or nmol/L, and these units are not directly interchangeable due to the variable size of the apolipoprotein(a) protein. Generally, levels below 30 mg/dL (or 75 nmol/L) are considered desirable, 30-50 mg/dL (75-125 nmol/L) is borderline high, and above 50 mg/dL (125 nmol/L) is considered elevated and associated with significantly increased cardiovascular risk. Very high levels (above 180 nmol/L) confer risk comparable to heterozygous familial hypercholesterolaemia. If your Lp(a) is elevated, the focus of treatment shifts to aggressively managing other modifiable risk factors—particularly LDL cholesterol, blood pressure, diabetes, smoking, and weight—since these can be modified even when Lp(a) cannot. Results outside the normal range may need a follow-up with your GP.