A lipid panel is a useful tool for determining your risk of developing heart disease or stroke. The test determines your total cholesterol level and gives a breakdown of how much of that cholesterol is carried by low-density lipoprotein and how much is carried by high-density lipoprotein. Cholesterol is a waxy substance that can stick to the walls of the arteries, reducing blood flow and increasing your risk of a heart attack. The lipid panel also provides information about your triglyceride level. High triglycerides also increase your risk of developing heart disease or having a heart attack or stroke. *This test is sent out to an outside lab and takes 24-48 hours to get back the results