Lab test
Lp(a) Test – Coronary Heart Disease Test
This page explains the lp(a) test – coronary heart disease test, what it measures, and how to order it. This blood test measures your Lipoprotein(a) levels, a substance that can indicate an increased risk for heart disease and stroke.
What this test is
Lipoprotein(a), often called Lp(a), is a type of cholesterol particle that is determined by your genes. Elevated levels of Lp(a) are associated with a higher risk of developing coronary heart disease and ischemic stroke.
What it measures
- Lipoprotein(a) — reflects a genetic predisposition to cardiovascular disease
What the test involves
This test requires a standard blood draw. A healthcare professional will collect a small sample of your blood, typically from a vein in your arm.
Why it is often ordered
Clinicians may order this test to assess an individual's risk for cardiovascular events. It is often used when there is a family history of early heart disease or when other risk factors are present.
Preparation
Please follow any specific preparation instructions provided by the laboratory where you will have your blood drawn. Some labs may require you to fast before the test.
How results are reported
Your results will indicate the level of Lp(a) in your blood. Laboratories provide reference ranges, which are ranges of expected values, and these can vary between different labs.
Before you go
- Fasting requirements
- Specimen collection site
- How to receive results
FAQ
Frequently asked questions
Is Lp(a) the same as LDL cholesterol?
No, Lp(a) is a different type of lipoprotein particle than LDL cholesterol. While both are related to cholesterol, Lp(a) carries its own distinct risk for heart disease.
Can Lp(a) levels be changed by lifestyle?
Lp(a) levels are primarily determined by genetics and are generally not significantly affected by diet or exercise. Some medications may influence Lp(a) levels.
How often should Lp(a) be tested?
The frequency of Lp(a) testing depends on your individual risk factors and your clinician's recommendations. It is often tested once to establish a baseline level.
What does a high Lp(a) result mean?
A high Lp(a) level suggests an increased inherited risk for developing plaque buildup in arteries, which can lead to heart attack or stroke. Your doctor will discuss what this means for you.
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