VLDL stands for very low-density lipoprotein, which is a type of lipoprotein that carries triglycerides, cholesterol, and other lipids around the body. VLDL is considered a "bad cholesterol" because it helps cholesterol build up on the walls of arteries, which can lead to atherosclerosis and increase the risk of cardiovascular disease. A VLDL test is a blood test that estimates the amount of VLDL in the blood. VLDL cholesterol is not directly measured, but it is calculated using a specific equation based on triglyceride results. A normal VLDL level is less than 30 mg/dL. A VLDL test is often used along with a series of other tests in a general lipid profile to screen for cardiovascular disease. If VLDL levels are high, lifestyle changes and medication can help.