As the name implies, non-HDL cholesterol, is basically your HDL (good) cholesterol number subtracted from your total cholesterol number. An optimal level of non- HDL cholesterol is less than 130 milligrams per deciliter ( mg/dL), or 3. According to cholesterol guidelines, your non-HDL cholesterol level goal should be 30 mg/dL higher than your LDL cholesterol level goal. Your non-HDL cholesterol is your total cholesterol minus your HDL (good) cholesterol. Non–HDL cholesterol is simply defined as the difference between total and HDL cholesterol and, thus, represents cholesterol carried on all of the potentially.