The leading cause of death worldwide is heart disease, and now, a new blood test is changing how we assess risk. Unlike traditional cholesterol panels, this test identifies a genetically determined biomarker called Lipoprotein(a) or Lp(a), which can independently elevate your risk of heart attack and stroke, even if you otherwise appear healthy. Major medical organizations, including the American Heart Association, are now recommending that individuals get their Lp(a) levels checked at least once.
Why Lp(a) Matters
Lp(a) is a type of cholesterol particle that contains a unique protein making it more prone to sticking to artery walls and causing plaque buildup. High levels of Lp(a) increase the risk of heart attack, stroke, peripheral artery disease, and aortic stenosis. Approximately 20-25% of the global population has elevated Lp(a) levels – meaning nearly one in five people may have an undiagnosed cardiovascular risk factor. This is significant because high Lp(a) levels often don’t present with symptoms, and aren’t routinely screened for.
Who Should Get Tested?
The test itself is straightforward: a simple blood draw. Because Lp(a) levels are genetically fixed, a single lifetime test is usually sufficient. However, testing is particularly important for those with:
- A family history of early-onset heart disease (before age 55 in men, 65 in women)
- Unexplained cardiovascular events
- Familial hypercholesterolemia or very high LDL cholesterol
- A known family history of elevated Lp(a)
Understanding Your Results
Lp(a) levels are measured in either mg/dL or nmol/L, and risk thresholds vary. Generally, levels above 50 mg/dL (125 nmol/L) are considered elevated, and levels exceeding 100 mg/dL (250 nmol/L) may double your risk. Your doctor will assess these levels alongside other indicators, such as LDL cholesterol, blood pressure, blood sugar, and family history.
Can Lp(a) Be Lowered?
Currently, Lp(a) levels are approximately 70-90% genetically determined, making them largely unresponsive to lifestyle changes like diet and exercise. However, promising research is underway with medications like Pelacarsen and Olpasiran, which have shown significant Lp(a) reduction in clinical trials. These therapies are still evolving, but represent a potential breakthrough in managing this previously untreatable risk factor.
What To Do With High Lp(a) Levels
Despite the lack of a direct treatment, knowing your Lp(a) level is valuable. It helps identify individuals with a higher baseline cardiovascular risk, allowing for more aggressive management of modifiable risk factors. If your Lp(a) is elevated, focus on:
- Lowering LDL cholesterol
- Adopting a heart-healthy diet rich in fiber
- Maintaining regular physical activity
- Managing blood pressure effectively
- Working with your doctor on a personalized prevention plan
The Future of Cardiovascular Screening
Widespread Lp(a) testing allows for earlier, more targeted intervention. This proactive approach enables informed decisions about prevention strategies, medication timing, and monitoring frequency. By identifying hidden risk factors, we can move beyond reactive treatment to preventative care.
Ultimately, knowing your Lp(a) level gives you valuable insight into your baseline cardiovascular health, enabling you to take smarter, earlier action to protect your heart. If you haven’t been tested, discuss it with your doctor at your next visit. It’s a simple test with the potential to reveal a critical piece of your health puzzle.
