what is ldl-p
LDL-P (LDL particle number) measures the actual number of LDL particles (particle concentration, nmol/L). It appears that LDL-P may be a stronger predictor of cardiovascular events than LDL-C. Low LDL-P is a much stronger predictor of low risk than low LDL-C.
Low-density lipoprotein particle (LDL particle or LDL-P) testing evaluates LDL particles according to their number, size, density, and/or electrical charge.
LDL-C is only a measure of the cholesterol mass within LDL-particles. Thus, LDL-C only indirectly reflects the atherogenic potential of LDL particles. Apolipoprotein B (apoB) and LDL-P, on the other hand, reflect the number of atherogenic particles, with no mention of cholesterol mass.