One of the characteristic features of a living cell is that it controls the exchange of electrically charged ions across the cell membrane and therefore the electrical potential of its interior relative to the exterior. This Scholarpedia page is a basic introduction into the mechanisms underlying this process.
Here are the ranges for total cholesterol in adults: 1  Normal: Less than 200 mg/dL. 2  Borderline high: 200 to 239 mg/dL. 3  High: At or above 240 mg/dL.
Total blood (or serum) cholesterol. Your total cholesterol score is calculated using the following equation: HDL + LDL + 20 percent of your triglyceride level. HDL (good) cholesterol. With HDL cholesterol, higher levels are better. Low HDL cholesterol puts you at higher risk for heart disease.our total cholesterol and HDL (good) cholesterol are among numerous factors your doctor can use to predict your lifetime or 10-year risk for a heart attack or stroke. View an animation of cholesterol score. Your test report will show your cholesterol levels in milligrams per deciliter of blood (mg/dL).