About LDL Particle Number
LDL particle number (LDL-P) counts the total number of LDL particles circulating in the blood, not just the cholesterol they carry. Each LDL particle can penetrate artery walls, so the more particles you have, the greater the exposure — two people can have identical LDL cholesterol yet vastly different LDL-P and cardiovascular risk. LDL-P consistently outperforms LDL-C as a predictor of heart disease, especially in individuals with insulin resistance or high triglycerides where cholesterol-rich LDL particles are replaced by smaller, more numerous ones.