LIPID PROFILE A lipid profile test is a crucial diagnostic tool used to assess the levels of various types of fats, or lipids, in your blood. This test provides a comprehensive evaluation of your cardiovascular health by measuring several key components: total cholesterol, low-density lipoprotein (LDL) cholesterol, high-density lipoprotein (HDL) cholesterol, very-low-density lipoprotein (VLDL) cholesterol, and triglycerides. Each of these lipids plays a distinct role in your body's metabolic processes and has implications for your heart health.