The Lipid Profile cassette measures total cholesterol (TC), a measure of the total amount of cholesterol in the blood, high density lipoprotein (HDL) cholesterol (''good cholesterol'') and triglycerides or TRG (fatty acids and glycerol that circulate in the blood and are stored as body fat). Lipid Profile also calculates the TC/HDL ratio, non-HDL cholesterol, and estimates the level of LDL cholesterol (''bad cholesterol''). For use with the Alere Cholestech LDX® System.