Does this test have other names?
High-density lipoprotein cholesterol
What is this test?
An HDL cholesterol test measures the amount of high-density lipoprotein ("good") cholesterol
in your blood. High HDL levels may lower your risk for heart disease.
Why do I need this test?
You may have this test as part of a routine screening to find out your risk for heart
What other tests might I have along with this test?
An HDL test is often done as part of a comprehensive lipid panel to get a complete
picture of your cholesterol and blood fat levels. Low-density lipoprotein (LDL) cholesterol,
triglycerides, and very-low density lipoproteins are among the other lipids your healthcare
provider may want to measure.
What do my test results mean?
Many things may affect your lab test results. These include the method each lab uses
to do the test. Even if your test results are different from the normal value, you
may not have a problem. To learn what the results mean for you, talk with your healthcare
The normal ranges for HDL cholesterol are:
If the test shows that your HDL levels are lower than normal, this may mean you have
a higher risk of developing heart disease.
If your HDL level is higher than the normal range, this is good news: HDL helps rid
your system of LDL. It helps protect against heart problems such as atherosclerosis,
or hardening of the arteries. Researchers think that a level of 60 mg/dL or higher
may protect against heart disease.
How is this test done?
The test requires a blood sample, which is drawn through a needle from a vein in your
Does this test pose any risks?
Taking a blood sample with a needle carries risks that include bleeding, infection,
bruising, or feeling dizzy. When the needle pricks your arm, you may feel a slight
stinging sensation or pain. Afterward, the site may be slightly sore.
What might affect my test results?
Having another health condition such as diabetes, or taking certain medicines can
affect the results of an HDL test.
How do I get ready for this test?
Ask your healthcare provider how you should prepare for this test. You don't usually
need to do anything before an HDL test, but if you're having a complete lipid panel,
you will probably have to fast and not exercise for 12 hours before having the test.
Be sure your provider knows about all medicines, herbs, vitamins, and supplements
you are taking. This includes medicines that don't need a prescription and any illicit
drugs you may use.