Lp-PLA2 Activity

Lp-PLA2 activity measures the level of an enzyme in your blood that is linked to inflammation inside the walls of your arteries. Higher levels of this enzyme may suggest that fatty deposits (plaques) in your arteries are more inflamed and potentially more likely to become unstable, which can increase the risk of heart attack or stroke. This test is sometimes used alongside standard cholesterol tests to get a more complete picture of your cardiovascular health, especially if your risk is considered intermediate. It is not a definitive test for heart disease on its own, but it can help your doctor make more informed decisions about your care.

When elevated: Elevated Lp-PLA2 activity is associated with increased vascular inflammation, greater atherosclerotic plaque vulnerability, and higher risk of major adverse cardiovascular events including myocardial infarction and ischemic stroke. High activity levels may indicate active macrophage-driven inflammation within coronary or cerebrovascular plaques. When low: Low Lp-PLA2 activity is generally considered favorable and is associated with reduced vascular inflammatory burden. Very low levels may be observed with statin therapy, which is known to reduce Lp-PLA2 activity, or in individuals with low overall atherosclerotic burden.

Lp-PLA2 activity is not typically athlete-specific; it reflects vascular inflammation risk and plaque vulnerability, which is relevant to all populations but not performance-dependent. For endurance or strength athletes, elevated Lp-PLA2 may indicate underlying cardiovascular risk independent of fitness level, making it useful for long-term health screening rather than training optimization.