Heart health

Lipoprotein(a), or Lp(a)

Updated 2026-10-14Written for education by the Zenlo Health editorial teamHow we review
Quick answerLipoprotein(a), written Lp(a), is a cholesterol-carrying particle set mostly by your genes. A high level raises lifetime risk of heart attack, stroke, and aortic valve narrowing, and diet and exercise change it very little.
Fasting and prepNo fasting needed.
Typical turnaroundUsually 2 to 4 days.
Also calledlp(a), lpa test, lipoprotein a test

What it measures

Most people need one Lp(a) test in their lifetime, because levels stay fairly stable in adults. Knowing a high result lets you and your clinician lower the other risks you can change, and it tells relatives to get tested too.

Who should consider it

  • Anyone with a personal or family history of early heart attack, stroke, or stent
  • People with high LDL that stays high despite lifestyle changes
  • Adults who want to know their inherited risk once
  • Close relatives of someone with a high Lp(a)

How to read your result

Lp(a) (mg/dL)

Many guidelines treat 50 mg/dL (about 125 nmol/L) or higher as risk-enhancing. Labs report either mg/dL or nmol/L, and the two do not convert exactly, so compare like with like.

  • Check the unit on your report. mg/dL and nmol/L are different scales.
  • About 1 in 5 people carry a level high enough to raise risk.
  • A high result does not mean you will have a heart attack. It means other risk factors deserve tighter control.

Reference ranges differ between labs. Use the range printed on your own report.

When to get care right away. Chest pain or pressure, shortness of breath, fainting, or sudden weakness on one side: call 911. A blood test cannot rule out a heart attack.

What to do next

No approved medicine lowers Lp(a) yet, though trials are underway. For now, treatment focuses on lowering LDL and ApoB, blood pressure, and other risks. Ask a clinician about a coronary calcium scan.

Where to order Lipoprotein(a)

These sellers include an independent physician order. You pay online and visit a partner lab. Availability, price, and lab network vary, so confirm at checkout.

Private MD Labs

Online lab seller
  • Says 4,500+ Quest and Labcorp locations
  • Every order reviewed by a physician. Says you pay $1 to start and the rest after results.
  • Secure online portal with plain-English explanations. Says many results arrive overnight.

HealthLabs

Online lab seller
  • Says 4,500+ labs, including Quest and Labcorp
  • Online or by phone. No doctor referral or insurance needed.
  • Secure HealthLabs account. Says 1 to 3 business days.

Walk-In Lab

Online lab seller
  • Lab network not named on its homepage
  • Online, no insurance or doctor order needed. Shows a $6 physician fee per order on popular tests.
  • Online account. Turnaround not stated on its homepage.

Quest Health

Lab-run
  • Quest, 2,000+ locations
  • Buy online and book a Quest appointment. An independent provider is involved.
  • Online as soon as ready, with an email alert. Provider discussion included at no extra cost.

Seller details come from each seller's own site and can change. Confirm price, lab location, and state availability at checkout.

Questions people ask

How often should I test Lp(a)?

Most adults test once, since levels are largely inherited and stay stable. A repeat can make sense after major changes such as menopause, kidney disease, or a new treatment.

Can I lower Lp(a) with diet or exercise?

Not much. Lifestyle helps your other risk factors, which still matter a lot if your Lp(a) is high.

Is Lp(a) covered by insurance?

Coverage varies. A direct-to-consumer order lets you pay a fixed price without a claim.

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