Your cholesterol results may look reassuring, yet one inherited risk factor for heart disease could still go unnoticed. It is called lipoprotein(a), usually written as Lp(a), and a standard cholesterol panel does not measure it separately.

High Lp(a) levels are associated with a higher risk of heart attack, stroke, and aortic valve disease. Because levels are largely determined by genetics and usually cause no symptoms, many people do not know whether theirs is elevated.

Medical guidelines now recommend measuring Lp(a) at least once in adulthood. Understanding what this test can—and cannot—tell you may help you have a more informed conversation about your long-term cardiovascular risk.

What Is Lipoprotein(a)?

Lipoprotein(a), pronounced “L-P little a,” is a particle that carries cholesterol through the bloodstream. It resembles low-density lipoprotein (LDL), often called “bad cholesterol,” but has an additional protein called apolipoprotein(a).

This structure matters because elevated Lp(a) is linked to the buildup of plaque in artery walls and processes involving inflammation and blood clotting. Over time, these effects can contribute to atherosclerotic cardiovascular disease.

Lp(a) is distinct from LDL cholesterol, HDL cholesterol, and triglycerides. A person can have an LDL level that appears well controlled and still have elevated Lp(a). That does not mean a heart attack is inevitable; it means one part of the person’s risk profile may need closer attention.

Why Might a Routine Cholesterol Test Miss It?

A typical lipid panel measures total cholesterol, LDL cholesterol, HDL cholesterol, and triglycerides. It does not usually report a separate Lp(a) result.

Some of the cholesterol carried by Lp(a) may contribute to the cholesterol reported in routine measurements, but this does not allow clinicians to reliably determine a person’s Lp(a) level from the standard panel. A separate blood test is needed.

The 2026 American Heart Association and American College of Cardiology dyslipidemia guideline recommends measuring Lp(a) at least once in all adults to help assess cardiovascular risk. A separate measurement may be particularly relevant when there is a family history of premature cardiovascular disease or a diagnosis of familial hypercholesterolemia.

Is High Lp(a) Common?

Yes. The American Heart Association estimates that about one in five people worldwide has an elevated Lp(a) level. However, prevalence varies between populations, and the result must be interpreted in the context of an individual’s overall health.

Lp(a) levels are largely inherited and often remain relatively stable throughout adulthood. Lifestyle changes such as exercise and dietary improvements are important for cardiovascular health, but they generally have little effect on the Lp(a) number itself.

That is one reason this risk factor can be easy to overlook. A person may eat well, exercise regularly, and have no symptoms while still having genetically elevated Lp(a).

What Counts as a High Lp(a) Level?

Clinical guidelines commonly consider an Lp(a) concentration of 50 mg/dL or 125 nmol/L to be elevated. These are two different measurement units, and the conversion between them is not exact for every individual or laboratory method.

Higher concentrations are associated with greater cardiovascular risk, but there is no single number that determines what will happen to a particular person. Age, blood pressure, LDL cholesterol, smoking, diabetes, family history, and other factors also influence overall risk.

Ask your healthcare professional to interpret the result using the units and reference information reported by the laboratory. Do not use a conversion calculator to treat mg/dL and nmol/L as perfectly interchangeable.

Does High Lp(a) Mean You Will Have a Heart Attack?

No. An elevated result is a risk factor, not a prediction that an event will definitely occur.

Large observational studies and genetic research support a causal relationship between elevated Lp(a) and atherosclerotic cardiovascular disease. Higher levels are also associated with calcific aortic valve stenosis, a condition in which the valve that controls blood flow out of the heart becomes narrowed.

However, individual risk varies. Someone with high Lp(a) and several additional risk factors may have a different absolute risk from someone with the same Lp(a) level but otherwise favorable health measures.

Testing is most useful when the result is considered alongside other information and can help guide a prevention plan—not when it is interpreted in isolation.

Can You Lower Lp(a) Naturally?

At present, diet and exercise generally do not substantially lower Lp(a) itself because its level is largely genetically determined. That does not make healthy habits unimportant.

Maintaining a heart-healthy eating pattern, being physically active, avoiding tobacco, managing blood pressure, and addressing high LDL cholesterol can reduce other cardiovascular risks. Lowering those modifiable risks may be particularly important for someone whose Lp(a) is elevated.

Do not stop prescribed cholesterol medication because it does not directly lower Lp(a). Treatments such as statins are used to reduce LDL cholesterol and cardiovascular risk; clinicians consider the whole risk profile when deciding on treatment. Some therapies can also affect Lp(a), but their suitability depends on the individual and the clinical indication.

Are There Medicines Specifically for Lp(a)?

Several treatments that lower Lp(a) are being investigated, and some existing medicines can reduce its level to varying degrees. However, lowering a laboratory number is not the same as proving that a treatment prevents heart attacks or strokes.

As of the guidance reviewed for this article, there is no broadly approved medication prescribed solely to lower Lp(a) for every person with an elevated result. Treatment decisions depend on overall cardiovascular risk, existing disease, LDL levels, and current clinical recommendations.

Be cautious of supplements or online programs that promise to eliminate inherited Lp(a). There is not good evidence that a commercial supplement can reliably normalize Lp(a) or replace established cardiovascular prevention.

Who Should Ask About an Lp(a) Test?

Current guidance supports testing all adults at least once. It may be especially useful to discuss testing if you have a family history of early heart attack or stroke, known elevated Lp(a) in a close relative, or familial hypercholesterolemia.

If your result is high, your healthcare professional may review your other risk factors, discuss whether close relatives could benefit from testing, and determine whether your existing prevention plan needs adjustment.

Because Lp(a) is largely inherited, testing close family members may sometimes identify people whose risk would otherwise remain unrecognized. The timing and approach should be discussed with a qualified clinician, especially for children or people with complex medical histories.

What to Remember Before Your Next Checkup

An ordinary cholesterol panel remains important, but it does not tell the whole story for everyone. Lp(a) is an additional, largely inherited risk factor that can provide useful information about cardiovascular health.

If you have never had an Lp(a) test, consider asking your healthcare professional whether it is appropriate for you. Bring your family history and existing cholesterol results to the discussion, and ask how the result would affect your overall risk assessment.

The goal is not to worry about a single number. It is to identify relevant risks early and make informed decisions about prevention based on the best available evidence.