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Lipoprotein(a) Cholesterol

Does this test have other names?

Cholesterol Lp(a), Lp(a)

What is this test?

This test measures the level of lipoprotein (a), or Lp(a), in your blood.

Lipoproteins are made of protein and fat. They carry cholesterol through your blood. Lp(a) is a type of low-density lipoprotein, or LDL ("bad") cholesterol. High levels of Lp(a) can create plaque. This is a buildup of cholesterol that limits blood flow through your arteries. A high level of Lp(a) can be a sign of cholesterol-related disease, such as coronary artery disease. Research has found it to be an independent risk factor for heart disease. How that information can be used in routine medicine isn't yet well defined. 

Why do I need this test?

You may have this test if you have symptoms of heart disease, if you have a family history of cardiovascular disease, or if you have heart disease even though you have a normal lipid level. You can inherit abnormal levels of Lp(a).

What other tests might I have along with this test?

Your healthcare provider may order other tests to look at how well your heart is working. These tests may include:

  • Complete lipid or cholesterol profile

  • Electrocardiogram, or ECG, to measure heart activity

  • Stress test to check your heart while you are exercising

  • Echocardiogram to show an image of your heart while it's beating

  • Cardiac catheterization to see if you have a clogged artery

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 provider.

Results are given in milligrams per deciliter (mg/dL). In most people, Lp(a) levels do not change much over their lifetime. Levels tend to be higher in women after menopause and tend to be slightly lower in men than women. Lp(a) levels may also vary with ethnicity. For example, African-Americans often have higher levels of the protein than whites.

For most people, higher results mean greater than 30 mg/dL. If your results are high, it may mean you have high cholesterol and cardiovascular disease.

How is this test done?

The test requires a blood sample, which is drawn through a needle from a vein in your arm.

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?

Other factors aren't likely to affect your results.

How do I get ready for this test?

You don't need to prepare for this test. But be sure your healthcare 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.  

Lipoprotein(a) Cholesterol - WellSpan Health

Author: Fisher, Steve
Online Medical Reviewer: Taylor, Wanda L, RN, PhD
Online Medical Reviewer: Ziegler, Olivia Walton, MS, PA-C
Last Review Date: 2015-08-30T00:00:00
Last Modified Date: 2015-09-18T00:00:00
Published Date: 2015-09-18T00:00:00
Last Review Date: 2012-07-09T00:00:00
© 2016 WellSpan Health. All Rights Reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.

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