(1) 150 and 200 mg Explanation: Cholesterol is defined as a waxy alcohol, fat-like substance that occurs naturally in all areas of the human body. Cholesterol is measured in milligrams per 100 millimetres of blood. The normal level of cholesterol varies between 150-200 mg per 100 ml. Any increase in cholesterol level leads to hypercholesterolemia or high cholesterol. Normal cholesterol is 180 mg/dl or 180 mg/ 144ml. < 200 mg/dl is considered to be normal blood cholesterol; 200-239 mg/dL borderlinehigh; and > 240 mg/dl high cholesterol.