Lipid Panel

A standard blood test that measures cholesterol and triglyceride levels to help assess cardiovascular risk.

Last updated: April 10, 2026

A lipid panel is a blood test that measures four types of fat in the bloodstream: total cholesterol, LDL cholesterol, HDL cholesterol, and triglycerides. It is one of the most important screening tools for assessing heart disease risk and is routinely ordered as part of preventive care.

What Is a Lipid Panel?

A lipid panel, also called a lipid profile or cholesterol test, is a group of blood tests that measure the levels of certain fats (lipids) in the blood. These fats play important roles in the body, from building cell membranes to producing hormones. However, when certain lipid levels are too high or too low, the risk of cardiovascular disease increases.

Healthcare providers use lipid panel results alongside other factors, such as age, blood pressure, family history, and smoking status, to estimate a person's overall risk of heart attack or stroke. The results help guide decisions about lifestyle changes and, when necessary, medication.

Lipid panels are among the most commonly ordered lab tests in the United States. The American Heart Association recommends that adults begin routine cholesterol screening at age 20, with repeat testing every four to six years for people at average risk. Children with a family history of early heart disease or high cholesterol may also benefit from early screening.

What Does a Lipid Panel Measure?

A standard lipid panel includes four key measurements. Each one provides different information about cardiovascular health.

Total Cholesterol

The combined amount of all cholesterol in the blood, including LDL, HDL, and a portion of triglycerides. It provides a quick snapshot of overall cholesterol status.

Desirable: <200 mg/dL

LDL Cholesterol

Low-density lipoprotein carries cholesterol to the arteries. Excess LDL can lead to plaque buildup in the artery walls, a condition called atherosclerosis, which raises the risk of heart attack and stroke.

Optimal: <100 mg/dL

HDL Cholesterol

High-density lipoprotein carries cholesterol away from the arteries and back to the liver, where it is broken down and removed from the body. Higher HDL levels are generally associated with lower cardiovascular risk.

Desirable: >40 mg/dL (men), >50 mg/dL (women)

Triglycerides

The most common type of fat in the body. Triglycerides store unused calories and provide energy between meals. Elevated levels are linked to increased cardiovascular risk, especially when combined with high LDL or low HDL.

Normal: <150 mg/dL

Lipid Panel Reference Ranges

The table below shows commonly used reference ranges for adults. Individual targets may differ based on age, medical history, and cardiovascular risk factors.

Component Desirable Borderline High Risk
Total Cholesterol <200 mg/dL 200–239 mg/dL ≥240 mg/dL
LDL Cholesterol <100 mg/dL 130–159 mg/dL ≥160 mg/dL
HDL Cholesterol >60 mg/dL 40–59 mg/dL <40 mg/dL
Triglycerides <150 mg/dL 150–199 mg/dL ≥200 mg/dL

Ranges based on ATP III / AHA guidelines. Some labs may use slightly different cutoffs.

When Is a Lipid Panel Ordered?

A lipid panel may be ordered in a variety of clinical situations. Common reasons include:

  • Routine screening — as part of a regular health checkup for adults age 20 and older
  • Cardiovascular risk assessment — to evaluate risk factors for heart attack and stroke
  • Family history — when close relatives have had early heart disease or high cholesterol
  • Monitoring treatment — to track the effectiveness of cholesterol-lowering medications (such as statins) or lifestyle changes
  • Diabetes management — people with diabetes are at higher cardiovascular risk and often need more frequent lipid monitoring
  • Obesity evaluation — excess body weight is associated with abnormal lipid levels
  • Follow-up after abnormal results — to confirm or track previously elevated levels

What Abnormal Results May Mean

Abnormal lipid levels do not diagnose a specific condition on their own. They are one piece of a larger picture that includes medical history, lifestyle, and other test results. Below are some common associations.

Elevated Lipid Levels

  • High total cholesterol or LDL: increased risk of atherosclerosis, coronary artery disease, heart attack, and stroke
  • High triglycerides: may be associated with metabolic syndrome, pancreatitis risk (when very high), uncontrolled diabetes, hypothyroidism, or excess alcohol intake
  • Familial hypercholesterolemia: a genetic condition that causes very high LDL levels from birth
  • Diet and lifestyle factors: diets high in saturated fat, trans fat, and refined carbohydrates can raise LDL and triglycerides

Low Lipid Levels

  • Low HDL: associated with increased cardiovascular risk; may result from smoking, physical inactivity, obesity, or genetic factors
  • Very low total cholesterol: uncommon, but may be seen in malnutrition, hyperthyroidism, liver disease, or certain genetic conditions
  • Low triglycerides: generally not a clinical concern; very low levels may occasionally be seen with malabsorption or hyperthyroidism

Frequently Asked Questions

What does a lipid panel measure?
A lipid panel measures four key blood fats: total cholesterol, LDL cholesterol (often called "bad" cholesterol), HDL cholesterol (often called "good" cholesterol), and triglycerides. Some labs also calculate a VLDL cholesterol value or a total cholesterol-to-HDL ratio.
Is fasting required before a lipid panel?
Traditionally, a 9-to-12-hour fast was required before a lipid panel. However, many guidelines now accept non-fasting samples for routine screening. A healthcare provider may still request fasting if triglyceride levels need the most accurate measurement.
How often should a lipid panel be done?
The American Heart Association recommends lipid screening every 4 to 6 years for adults over age 20 with average cardiovascular risk. People with elevated cholesterol, a family history of heart disease, or other risk factors may need testing more frequently, sometimes annually.
What is a good LDL cholesterol level?
An LDL cholesterol level below 100 mg/dL is considered optimal for most adults. Levels between 100 and 129 mg/dL are near-optimal. For people at high cardiovascular risk, such as those with a history of heart attack, a healthcare provider may target an LDL below 70 mg/dL.
What is the difference between LDL and HDL cholesterol?
LDL (low-density lipoprotein) carries cholesterol to the arteries, where it can build up and form plaques. HDL (high-density lipoprotein) carries cholesterol away from the arteries and back to the liver for removal. Higher LDL is associated with increased cardiovascular risk, while higher HDL is generally considered protective. Learn more in the LDL vs. HDL comparison.
Can diet and exercise improve lipid panel results?
Yes. A heart-healthy diet low in saturated fat and trans fat, regular physical activity, maintaining a healthy weight, and not smoking can all help improve cholesterol and triglyceride levels. However, genetics also play a significant role, and some people may need medication to reach target levels.
What causes high triglycerides?
High triglyceride levels can result from excess calorie intake, high sugar or refined carbohydrate consumption, alcohol use, obesity, physical inactivity, and certain medical conditions like uncontrolled diabetes or hypothyroidism. Some medications, including certain diuretics and steroids, can also raise triglycerides.
Is a lipid panel the same as a cholesterol test?
A lipid panel is a more complete version of a cholesterol test. While a simple cholesterol screening may only report total cholesterol, a full lipid panel breaks the result down into LDL, HDL, and triglycerides, providing a much more detailed picture of cardiovascular risk.

Related Biomarkers and Panels

Total Cholesterol LDL Cholesterol HDL Cholesterol Triglycerides Glucose CRP LDL vs. HDL Diabetes Blood Tests CMP Panel CBC Panel

Sources

  • American Heart Association. Cholesterol and Triglycerides Tests
  • National Heart, Lung, and Blood Institute. Blood Cholesterol
  • MedlinePlus. Cholesterol Levels: What You Need to Know. U.S. National Library of Medicine
  • Mayo Clinic. Cholesterol Test
  • National Cholesterol Education Program (NCEP) ATP III Guidelines

Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice. Reference ranges vary by laboratory. Always discuss lab results with a qualified healthcare provider who can interpret them in the context of individual health history.