Cholesterol (Total) – Mass Concentration in Serum

Why Is This Test Done?

Your healthcare provider may order this test to evaluate your risk for heart disease, monitor existing heart conditions, or check for high cholesterol levels that could lead to plaque buildup in your arteries. It’s often part of a broader lipid panel that also includes other fats like triglycerides and HDL cholesterol.

What to Expect Before the Test

No special preparation is needed, but you may be asked to fast for 9–12 hours before the test if it’s part of a lipid panel. If you’re unsure, ask your provider. Blood is drawn from a vein in your arm, and you may feel a slight pinch, but it usually doesn’t cause discomfort afterward.

What the Results Mean

Cholesterol results are typically reported as a single number (total cholesterol) and are used alongside other lipid measurements to guide treatment decisions. While specific ranges vary by lab, high levels may signal a need for lifestyle changes or medication to lower cholesterol.

Common Causes of Abnormal Results

High cholesterol can result from diet, genetics, obesity, or certain medical conditions like diabetes or hypothyroidism. Low levels may occur with liver disease or certain medications. Your provider will discuss these findings with you based on your overall health.