hdl (high-density lipoprotein cholesterol)
CardiologyBlood sampleResults 24 hrsFasting required
HDL (High-Density Lipoprotein Cholesterol)
HDL cholesterol is often called the "good" cholesterol because it helps carry cholesterol away from your arteries. People get it checked to better understand their heart disease risk.
Sample
Blood
Results
24 hrs
Fasting
Required
Follow-up
Optional add-on
What this test detects
HDL cholesterol
Enzymatic colorimetry · serum
Quantitative · mg/dL
When to get this test
Heart disease risk assessment
Higher HDL levels are generally linked with lower risk of heart and artery disease.
Part of a lipid evaluation
Often measured alongside total and LDL cholesterol for a fuller picture.
Monitoring lifestyle changes
Helps track the effect of diet, exercise, and treatment on cholesterol balance.
How to prepare
01
Fast for 9–12 hours before the blood draw; water is allowed.
Common questions
Why is HDL called "good" cholesterol?
HDL helps move excess cholesterol out of the bloodstream, which is protective for your arteries.
Do I need to fast for this test?
Yes. Fasting for 9 to 12 hours gives the most reliable lipid results; you may still drink water.