NMR and ion mobility are methods used to count LDL particles, with ion mobility being more accurate.

“you can do this using NMR um so nuclear magnetic resonance is like how an MRI works so it's applying a magnetic field it's basically doing I mean this is being a little cheap Chey but it's sort of like doing an MRI on the blood and you can count the number of particles that way that's not actually the gold standard but that's that's the way it's most commonly done in clinical practice it can also be done with ion motility we switched from NMR to ion motility for ldlp because it was more accurate”