Normal target levels in lipid blood tests are greater than 40 milligrams per deciliter for high-density lipoprotein levels and lower than 130 milligrams per deciliter for low-density lipoprotein, according to the Cleveland Clinic. If triglyceride levels are needed, the target value is less than 150 milligrams per deciliter.
HDL cholesterol is considered the good cholesterol, reports the Cleveland Clinic. Increasing HDL levels is an important treatment for those at risk for cardiovascular disease. The bad cholesterol is LDL, which should be as low as possible to reduce the risk of heart disease and coronary artery disease. Many cholesterol-improving drugs decrease LDL levels.