CHOLESTEROL TOTAL, SERUM

Cholesterol Total, Serum

What it is

The Cholesterol Total, Serum test measures the overall level of cholesterol in the blood, including low-density lipoprotein (LDL), high-density lipoprotein (HDL), and very low-density lipoprotein (VLDL). Cholesterol is a fatty substance essential for building cells and producing hormones, but excess levels increase the risk of heart and vascular disease.

Uses

This test is commonly used as part of a lipid profile to assess cardiovascular health. It helps evaluate risk for coronary artery disease, stroke, and atherosclerosis. Doctors use it to monitor patients on cholesterol-lowering therapy and as part of routine health check-ups, especially in those with risk factors such as diabetes, hypertension, or obesity.

Symptoms That May Lead to the Test

Although high cholesterol itself does not cause symptoms, the test may be recommended if you have chest pain, shortness of breath, or risk factors like smoking, family history of heart disease, high blood pressure, diabetes, or obesity. It is also ordered for preventive screening in adults and sometimes in children with strong family history.

Abnormal Results

High Total Cholesterol: Associated with an increased risk of heart disease and stroke. It may result from poor diet, sedentary lifestyle, obesity, diabetes, hypothyroidism, or genetic disorders such as familial hypercholesterolemia.

Low Total Cholesterol: Rare, but may be seen in malnutrition, liver disease, hyperthyroidism, or certain chronic illnesses.

Interpretation is best done with a full lipid profile (HDL, LDL, triglycerides) rather than total cholesterol alone.

Risks

The test requires a simple blood draw. Risks are minimal and may include mild pain, bruising, or dizziness at the puncture site. These side effects are temporary and generally harmless.