CPT® Code 83700

The CPT® Code 83700 refers to a laboratory procedure known as lipoprotein electrophoresis, which is a blood test designed to measure the levels of lipoproteins in the bloodstream. Lipoproteins are complex biochemical structures that consist of lipid molecules, primarily fats, bound to proteins. These structures play a crucial role in the transport of lipids throughout the body via the circulatory system. Lipoproteins can vary significantly in size and density; they can be classified as large and less dense, where the fat content exceeds the protein content, or small and more dense, where the protein content surpasses the fat content. The origins of these lipoproteins can be either exogenous, derived from dietary fats, or endogenous, produced by the liver. To perform the test, a blood sample is collected through a procedure known as venipuncture, which is separately reportable. The process of electrophoresis involves applying an electrical field to the blood sample, which facilitates the separation of lipoprotein molecules based on their size and charge. Once separated, these lipoproteins are stained and quantified using a device called a densitometer, which measures the intensity of the stained bands corresponding to different lipoprotein fractions. This method provides valuable insights into the lipid profile of the patient, aiding in the assessment of cardiovascular health and the management of conditions related to lipid metabolism.