HDL Large Particle Number

HDL Large Particle Number (HDL-L) directly quantifies the concentration (number) of large HDL particles circulating in the blood. Like ApoB, this is considered a key driver of atherosclerosis, as risk is more closely related to the number of particles available to penetrate the arterial wall than the total cholesterol they carry. Lowering HDL-L is a primary goal for cardiovascular risk reduction in longevity-focused strategies. Ranges assume no underlying medical conditions such as prior heart disease.