U.S. Patent No. 7,435,577 - Direct Measurement Of Chlolesterol From Low Density Lipoprotein With Test Strip (Oct. 14, 2008)

Cholesterol from Low Density Lipoproteins (LDL-C) is measured directly with a test strip at room temperature using a reagent that takes advantage of the varying surface charge density on LDLs and non-LDLs to selectively make LDL-C available for testing.