Lp(a), or lipoprotein(a), is a cholesterol particle similar to LDL with an extra protein called apolipoprotein(a) attached. The extra protein makes it stickier and more likely to drive plaque, clotting, and valve calcification.

Can diet fix high Lp(a)?

No, diet cannot fix high Lp(a) in any meaningful way. You can be a vegan marathon runner and still have high Lp(a) because it is roughly 90% genetic. Do not blame yourself or assume more salads will solve it.

Should my kids be tested for Lp(a)?

Yes, your kids should be tested for Lp(a) once if you carry high levels. It is autosomal dominant, so each child has a 50% chance of inheriting it. Adult testing is fine for most, earlier if there is a strong family history of heart events.

Is Lp(a) linked to other diseases?

Lp(a) is mostly linked to heart attack, stroke, and aortic valve stenosis (a narrowing of the heart valve). Some data also links low Lp(a) to slightly higher diabetes risk, but the cardiovascular link is the main concern.

Why does Lp(a) need to be tested only once?

Lp(a) needs to be tested only once because it is set by your genes and stays roughly the same for life. Levels can shift slightly with kidney disease, hormones, or thyroid issues, but the basic value is stable.

How is Lp(a) reported?

Lp(a) is reported in two units: mg/dL (mass) and nmol/L (particle count). The nmol/L unit is preferred today because it is less affected by particle size differences. Many labs report both. We treat at about 75 nmol/L or 30 mg/dL as the threshold.

Will insurance cover Lp(a) testing?

Insurance often covers Lp(a) testing, especially with a personal or family history of early heart disease. If not covered, the cash price is usually around $40. We help you frame the order so coverage is more likely.

Does pregnancy affect Lp(a)?

Pregnancy can raise Lp(a) levels temporarily because of hormonal changes. We avoid testing during pregnancy and a few months after delivery for an accurate baseline. Otherwise, Lp(a) is stable enough to trust a single test.

How does Lp(a) actually damage arteries?

Lp(a) damages arteries by combining the plaque-driving features of LDL with an extra protein, apolipoprotein(a), that resembles a clotting protein called plasminogen. That sticky, pro-clotting structure gets stuck in damaged endothelium and accelerates both plaque growth and clot formation.

Why do statins not lower Lp(a)?

Statins do not lower Lp(a) because they work by raising LDL receptors in the liver, while Lp(a) clearance does not depend mainly on those receptors. Statins still lower overall risk by lowering ApoB, which is why we use them in patients with high Lp(a).

What is pelacarsen and how does it work?

Pelacarsen is a medication in late-stage trials that uses an antisense oligonucleotide (ASO), a short genetic snippet that tells the liver to stop producing the apolipoprotein(a) protein. In early trials, it has lowered Lp(a) by up to 80%. We are watching outcome trials closely.

What is olpasiran and how does it differ from pelacarsen?

Olpasiran is another Lp(a)-lowering drug in trials. It uses small interfering RNA (siRNA), a different way to silence the same gene. Both pelacarsen and olpasiran target the LPA gene in the liver. Olpasiran is dosed less often, every few months instead of every few weeks.

How does PCSK9 inhibition lower Lp(a)?

PCSK9 inhibition lowers Lp(a) modestly, by about 25 to 30%, by raising the number of LDL receptors on liver cells, which can also clear some Lp(a) particles. It is the only widely available drug class that lowers Lp(a) and ApoB at the same time.

What is lipoprotein apheresis?

Lipoprotein apheresis is a dialysis-like procedure that filters apoB-containing particles, including Lp(a) and LDL, out of the blood. It can lower Lp(a) acutely by 60 to 80% per session. It is reserved for very high risk patients with progressive disease who fail medications.

How does Lp(a) drive aortic valve stenosis?

Lp(a) drives aortic valve stenosis by depositing in the valve leaflets, where it triggers inflammation and calcium buildup over years. The valve thickens and narrows, eventually limiting blood flow out of the heart. People with very high Lp(a) face higher rates of aortic stenosis at younger ages.

Should every adult know their Lp(a)?

Yes, every adult should know their Lp(a) at least once. It is one of the cheapest tests in medicine and one of the most important. Knowing your number changes how intensive we are with ApoB targets, blood pressure goals, and imaging.

How does smoking interact with Lp(a)?

Smoking interacts with Lp(a) by damaging endothelial function and adding more inflammation to artery walls. People who smoke and carry high Lp(a) face dramatically higher heart attack rates than either factor alone. Quitting smoking is one of the highest-yield steps for high-Lp(a) patients.

What is the role of low-dose aspirin in high Lp(a)?

Low-dose aspirin in high Lp(a) is used in select patients to counter the clotting risk that Lp(a) raises. We discuss bleeding risk and other medications before recommending it. Some data suggests aspirin may reduce events specifically in carriers of high Lp(a).

How does Lp(a) relate to family history of heart disease?

Lp(a) explains a meaningful share of family histories of early heart disease that have no other obvious cause. If a parent or sibling had a heart attack before 55 in men or 65 in women, Lp(a) is a leading suspect. Cascade testing of relatives is high-value.

Why does Fishtown Medicine test Lp(a) on every adult?

Fishtown Medicine tests Lp(a) on every adult because the result changes treatment intensity for the rest of life. Testing once is cheap, fast, and informs how hard we work on ApoB, blood pressure, and imaging. Not testing leaves a major risk hidden in plain sight.

No. You can be a vegan marathon runner and still have high Lp(a). It is genetic. Do not blame yourself.

Should my kids be tested?

Yes. Lp(a) is autosomal dominant, meaning each child has a 50% chance of inheriting it. If you have it, test your children once they reach adulthood, or earlier if there is strong family history.

Is it linked to any other diseases?

Mostly heart attack, stroke, and aortic valve stenosis (valve narrowing). Some data links lower Lp(a) to slightly higher diabetes risk, but cardiac risk is the main concern.

Lp(a), or lipoprotein(a), is a cholesterol particle similar to LDL with an extra protein called apolipoprotein(a) attached. The extra protein makes it stickier and more likely to drive plaque, clotting, and valve calcification.

Can diet fix high Lp(a)?

No, diet cannot fix high Lp(a) in any meaningful way. You can be a vegan marathon runner and still have high Lp(a) because it is roughly 90% genetic. Do not blame yourself or assume more salads will solve it.

Should my kids be tested for Lp(a)?

Yes, your kids should be tested for Lp(a) once if you carry high levels. It is autosomal dominant, so each child has a 50% chance of inheriting it. Adult testing is fine for most, earlier if there is a strong family history of heart events.

Is Lp(a) linked to other diseases?

Lp(a) is mostly linked to heart attack, stroke, and aortic valve stenosis (a narrowing of the heart valve). Some data also links low Lp(a) to slightly higher diabetes risk, but the cardiovascular link is the main concern.

Why does Lp(a) need to be tested only once?

Lp(a) needs to be tested only once because it is set by your genes and stays roughly the same for life. Levels can shift slightly with kidney disease, hormones, or thyroid issues, but the basic value is stable.

How is Lp(a) reported?

Lp(a) is reported in two units: mg/dL (mass) and nmol/L (particle count). The nmol/L unit is preferred today because it is less affected by particle size differences. Many labs report both. We treat at about 75 nmol/L or 30 mg/dL as the threshold.

Will insurance cover Lp(a) testing?

Insurance often covers Lp(a) testing, especially with a personal or family history of early heart disease. If not covered, the cash price is usually around $40. We help you frame the order so coverage is more likely.

Does pregnancy affect Lp(a)?

Pregnancy can raise Lp(a) levels temporarily because of hormonal changes. We avoid testing during pregnancy and a few months after delivery for an accurate baseline. Otherwise, Lp(a) is stable enough to trust a single test.

How does Lp(a) actually damage arteries?

Lp(a) damages arteries by combining the plaque-driving features of LDL with an extra protein, apolipoprotein(a), that resembles a clotting protein called plasminogen. That sticky, pro-clotting structure gets stuck in damaged endothelium and accelerates both plaque growth and clot formation.

Why do statins not lower Lp(a)?

Statins do not lower Lp(a) because they work by raising LDL receptors in the liver, while Lp(a) clearance does not depend mainly on those receptors. Statins still lower overall risk by lowering ApoB, which is why we use them in patients with high Lp(a).

What is pelacarsen and how does it work?

Pelacarsen is a medication in late-stage trials that uses an antisense oligonucleotide (ASO), a short genetic snippet that tells the liver to stop producing the apolipoprotein(a) protein. In early trials, it has lowered Lp(a) by up to 80%. We are watching outcome trials closely.

What is olpasiran and how does it differ from pelacarsen?

Olpasiran is another Lp(a)-lowering drug in trials. It uses small interfering RNA (siRNA), a different way to silence the same gene. Both pelacarsen and olpasiran target the LPA gene in the liver. Olpasiran is dosed less often, every few months instead of every few weeks.

How does PCSK9 inhibition lower Lp(a)?

PCSK9 inhibition lowers Lp(a) modestly, by about 25 to 30%, by raising the number of LDL receptors on liver cells, which can also clear some Lp(a) particles. It is the only widely available drug class that lowers Lp(a) and ApoB at the same time.

What is lipoprotein apheresis?

Lipoprotein apheresis is a dialysis-like procedure that filters apoB-containing particles, including Lp(a) and LDL, out of the blood. It can lower Lp(a) acutely by 60 to 80% per session. It is reserved for very high risk patients with progressive disease who fail medications.

How does Lp(a) drive aortic valve stenosis?

Lp(a) drives aortic valve stenosis by depositing in the valve leaflets, where it triggers inflammation and calcium buildup over years. The valve thickens and narrows, eventually limiting blood flow out of the heart. People with very high Lp(a) face higher rates of aortic stenosis at younger ages.

Should every adult know their Lp(a)?

Yes, every adult should know their Lp(a) at least once. It is one of the cheapest tests in medicine and one of the most important. Knowing your number changes how intensive we are with ApoB targets, blood pressure goals, and imaging.

How does smoking interact with Lp(a)?

Smoking interacts with Lp(a) by damaging endothelial function and adding more inflammation to artery walls. People who smoke and carry high Lp(a) face dramatically higher heart attack rates than either factor alone. Quitting smoking is one of the highest-yield steps for high-Lp(a) patients.

What is the role of low-dose aspirin in high Lp(a)?

Low-dose aspirin in high Lp(a) is used in select patients to counter the clotting risk that Lp(a) raises. We discuss bleeding risk and other medications before recommending it. Some data suggests aspirin may reduce events specifically in carriers of high Lp(a).

How does Lp(a) relate to family history of heart disease?

Lp(a) explains a meaningful share of family histories of early heart disease that have no other obvious cause. If a parent or sibling had a heart attack before 55 in men or 65 in women, Lp(a) is a leading suspect. Cascade testing of relatives is high-value.

Why does Fishtown Medicine test Lp(a) on every adult?

Fishtown Medicine tests Lp(a) on every adult because the result changes treatment intensity for the rest of life. Testing once is cheap, fast, and informs how hard we work on ApoB, blood pressure, and imaging. Not testing leaves a major risk hidden in plain sight.

No. You can be a vegan marathon runner and still have high Lp(a). It is genetic. Do not blame yourself.

Should my kids be tested?

Yes. Lp(a) is autosomal dominant, meaning each child has a 50% chance of inheriting it. If you have it, test your children once they reach adulthood, or earlier if there is strong family history.

Is it linked to any other diseases?

Mostly heart attack, stroke, and aortic valve stenosis (valve narrowing). Some data links lower Lp(a) to slightly higher diabetes risk, but cardiac risk is the main concern.

TL;DR · 30-second take

Lipoprotein(a), said L-P-little-A, is a genetic cholesterol particle that raises heart attack and stroke risk and can damage heart valves. About 1 in 5 adults carry high levels. Standard cholesterol panels miss it. Test once, treat the surrounding risk, and watch for new gene-silencing drugs in trial.

Lp(a): The Cholesterol Particle Doctors Miss

What is Lp(a) and why is it dangerous?

Lp(a), or lipoprotein(a), is a type of cholesterol particle that you inherit from your parents. About 1 in 5 adults carry high levels. Standard cholesterol panels do not test for it. You can have "perfect" cholesterol and still die of a heart attack. The cause is often Lipoprotein(a). Imagine an LDL particle (the bad cholesterol). Now imagine it carrying a sticky tail (Apo(a)). That is Lp(a). It digs into the artery wall, encourages clotting, and speeds up plaque buildup faster than ordinary LDL. It is one of the leading causes of "premature" heart attacks in fit, healthy people.²

What does the science say about Lp(a)?

The science says Lp(a) risk is real, linear, and causal. The 2022 European Atherosclerosis Society (EAS) consensus statement confirmed that higher Lp(a) means higher cardiovascular risk in a dose-dependent way.¹

Genetic: Lp(a) is roughly 90% determined by your genes. Diet and exercise do not lower it.
Independent risk: Even if your LDL is 70, a high Lp(a) still drives risk.
Aortic stenosis: Lp(a) also calcifies the aortic heart valve, narrowing the valve over time, not just the arteries.

In Medicine 3.0, we test every patient for Lp(a) once. Because it is genetic, the level rarely changes. If you do not know your number, you are flying blind.

What is the Fishtown strategy if Lp(a) is high?

The Fishtown strategy if Lp(a) is high is to lower the surrounding risk while we wait for new specific drugs to mature. There are no FDA-approved drugs designed only for Lp(a) yet, though pelacarsen and olpasiran are in late-stage trials.⁴ If you have high Lp(a), we act on the rest of the picture:

Crush ApoB: We drive your other harmful cholesterol particle count down to 60 mg/dL or lower. If we cannot remove the sticky particles (Lp(a)), we remove the standard particles (ApoB) so total burden drops.
Baby aspirin (if appropriate): Lp(a) raises clot risk. Low-dose aspirin can help in select patients. We discuss bleeding risk first.
Proactive imaging: We order a CT Coronary Angiogram (CTA) with Cleerly AI at age 40 (or earlier with strong family history) to see if the Lp(a) is already causing soft plaque that a calcium score would miss.
Tight blood pressure and glucose control: Less stress on the artery wall.

What treatments actually move Lp(a)?

Treatments that move Lp(a) are limited today, but the field is changing fast.

Intervention	Effect on Lp(a)	Use Case
Statins	Neutral or slight increase	Used to lower ApoB, which still reduces overall risk
PCSK9 inhibitors (Repatha, Praluent)	Lowers Lp(a) about 25 to 30%	Often the only currently approved drug class that meaningfully lowers Lp(a). Often covered for high-risk patients.³
Niacin	Lowers Lp(a) about 20%	Rarely used now due to side effects and lack of outcome benefit
Pelacarsen, olpasiran (in trials)	Lowers Lp(a) about 80% in trials	Likely available within a few years if outcome trials succeed
Lipoprotein apheresis	Lowers Lp(a) acutely about 60 to 80%	Reserved for very high risk patients with progressive disease

Guidance from the Clinic

"Its like driving on icy roads. You cannot change the weather, but you can drive slower and put on snow tires."

Why We Start Early: At Fishtown Medicine, we have seen what happens when high Lp(a) is left unmanaged for decades. Our approach is shaped by years of treating those late-stage outcomes. That experience is why we test early and act early.

A common conversation: "Dr. Ash, my dad had a heart attack at 45. Is this why?" Our answer: "It is very likely. Lets test you." If you have a family history of early heart attacks, Lp(a) is a leading suspect. Having high Lp(a) is like driving on ice. You cannot change the weather (genes), but you can drive slower (lower ApoB) and put on snow tires (lifestyle, blood pressure control, low-dose aspirin when appropriate). You can still arrive safely.

Actionable Steps in Philly

Get the test. Then get a plan.

Ask for it by name: At your next blood draw, write in "Lipoprotein(a)" or "Lp(a)." The cash price is usually about $40 if it is not covered.
Interpret the number:
- Under 30 mg/dL (or 75 nmol/L): Low risk.
- 30 to 50 mg/dL (or 75 to 125 nmol/L): Grey zone.
- Above 50 mg/dL (or 125 nmol/L): High risk. Apply the full Fishtown strategy.
- Above 150 mg/dL (or 430 nmol/L): Very high risk. Consider PCSK9 inhibitors.
Crush ApoB: Lower your other particle count to under 60 mg/dL.
Test your kids once they are adults: Lp(a) is autosomal dominant, which means each child has a 50% chance of inheriting it.

Unmask the risk. Book Your Warm Invitation Call Here

Scientific References

Kronenberg F, et al. "Lipoprotein(a) in atherosclerotic cardiovascular disease and aortic stenosis: a European Atherosclerosis Society consensus statement." European Heart Journal. 2022.
Tsimikas S. "A Test in Context: Lipoprotein(a): Diagnosis, Prognosis, Controversies, and Emerging Therapies." Journal of the American College of Cardiology. 2017.
O'Donoghue ML, et al. "Lipoprotein(a), PCSK9 Inhibition, and Cardiovascular Risk." Circulation. 2019.
Tsimikas S, et al. "Lipoprotein(a) Reduction in Persons with Cardiovascular Disease." New England Journal of Medicine. 2020.

Fishtown Medicine | Cardiovascular risk

2418 E York St, Philadelphia, PA 19125(267) 360-7927 hello@fishtownmedicine.comHSA/FSA Eligible

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