About LDL Peak Size
LDL peak size measures the diameter (in nanometers) of the most abundant LDL particle subclass in your blood. A peak size below 20.6 nm defines Pattern B — small, dense LDL — while larger sizes reflect the more benign Pattern A. Peak size is a continuous variable: as it decreases toward small dense LDL, cardiovascular risk rises in a graded fashion. This marker is particularly informative in people with normal LDL cholesterol who suspect metabolic risk based on their triglyceride or blood sugar levels.