Blood. A blood test for lipids should include a test for hdl.
Measure Particle No. Hdl, i.e. High density lipoproteins, are particles which carry fat molecules in water, have complex protein shells (including a key organizing protein called alpha-lipoprotein) which interact with proteins on cell membranes &, if recruited by the cell, is ingested & loaded with fat, then spit back out to remove fat molecules from cells which need to unload fat else die; i.e. May be antiatherogenic.