lipid particle concentration
Number of circulating lipoprotein particles measured by advanced lipid testing. May provide superior cardiovascular risk prediction compared to standard lipid concentrations.
Full Definition
Lipid particle concentration refers to the number of circulating lipoprotein particles rather than the cholesterol mass they carry, measured through advanced techniques like nuclear magnetic resonance (NMR) or ion mobility analysis. Key parameters include LDL particle number (LDL-P), HDL particle number (HDL-P), and VLDL particle number. Some studies suggest particle number provides superior cardiovascular risk prediction compared to standard cholesterol measurements, particularly LDL-P versus LDL-C. However, current guidelines do not routinely recommend particle testing, as outcomes trials demonstrating clinical benefit of particle-guided therapy are lacking.
Usage
Usage note: Advanced testing not routinely recommended; distinguish from cholesterol mass measurements.
In Context
- "The patient's elevated LDL particle concentration despite normal LDL-C suggested discordant risk assessment." — Advanced lipid testing report
- "Some studies suggest lipid particle concentration provides incremental risk prediction beyond standard lipid panels." — Lipidology research review