Lipoprotein(a)
The inherited, once-in-a-lifetime risk marker
Overview
Lipoprotein(a) is an LDL-like particle with an added apolipoprotein(a) tail. Its level is roughly 80–90% genetically determined and stays fairly stable through life, so a single measurement usually suffices.
Why it matters
Elevated Lp(a) is an independent, causal risk factor for heart attack, stroke, and calcific aortic valve disease. Because it is inherited and common (affecting perhaps 1 in 5 people), measuring it once identifies risk that standard panels miss.
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How this usually unfolds
- Measure it
- Understand your result
- See what raises and lowers it
- Apply evidence-based interventions
- Recheck on your review cadence
Where the evidence points
Below ~30 mg/dL (or < 75 nmol/L) is generally considered low risk; above ~50 mg/dL (125 nmol/L) is elevated.
Assays report mass (mg/dL) or particle number (nmol/L), which are not interchangeable; confirm units with the lab.
Clinical interpretation
A high Lp(a) raises cardiovascular risk on top of LDL and should intensify attention to every other modifiable factor. Crucially, lifestyle changes do not meaningfully lower it — the response is to control overall risk aggressively.
What raises and lowers it
Raises it
- Genetics (the dominant determinant)
- Certain kidney conditions
- Estrogen decline (modest)
Lowers it
- Not meaningfully changed by diet or exercise
- PCSK9-targeted therapy lowers it modestly
- Targeted RNA therapies are investigational (not yet approved)
How this connects across BioSignal
Related Foundations
Related biomarkers
Related comparisons
Related body systems
Related conditions
Related pharmaceuticals
Related lifestyle interventions
Diagnostics
- One-time blood test
- Best reported in nmol/L (particle number)
Frequently asked questions
Can I lower Lp(a) with diet or exercise?
No. Lp(a) is largely genetic and does not respond meaningfully to lifestyle. If it is elevated, the priority is to control LDL/ApoB, blood pressure, and other risk factors especially well.
How often should it be measured?
Usually once in a lifetime, since levels are stable. Re-testing is considered mainly if a new targeted therapy becomes relevant.
Evidence summary
Genetic and epidemiologic evidence firmly establishes Lp(a) as causal for cardiovascular and aortic-valve disease. Outcome trials of Lp(a)-lowering therapies are ongoing; no lifestyle intervention meaningfully changes it.
References & sources
- EAS Consensus Statement on Lipoprotein(a)
- 2018 ACC/AHA Cholesterol Guideline
- 2022 EAS updated Lp(a) consensus
Educational information — not medical advice
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