Lp(a): The Genetic Lipid Risk Factor

Lipoprotein(a), or Lp(a), is an LDL-like particle with an added apolipoprotein(a) attached. It is highly atherogenic, promotes thrombosis (clotting), and carries oxidized phospholipids.

Why Standard Panels Miss It

Lp(a) is not measured in a standard lipid panel (which only looks at Total Cholesterol, HDL, LDL-C, and Triglycerides). Because Lp(a) levels are ~90% genetically determined, they do not respond significantly to lifestyle changes (diet or exercise).

The Testing Protocol

Because levels are genetically stable, you generally only need to test Lp(a) once in your lifetime.

Target Ranges

Normal / Low Risk < 30 mg/dL (or < 75 nmol/L)
High Risk > 50 mg/dL (or > 125 nmol/L)

Common Mistakes

Confusing mg/dL and nmol/L: Ensure you check the units on your lab report. 50 nmol/L is fine, but 50 mg/dL is high.
Trying to lower it with diet: Saturated fat restriction will not lower Lp(a).

Frequently Asked Questions

How is high Lp(a) treated?: Currently, the primary strategy for patients with high Lp(a) is to aggressively lower ApoB (via statins/ezetimibe/PCSK9i) to mitigate overall risk. Specific RNA-targeted therapies for Lp(a) (like Pelacarsen) are currently in Phase 3 clinical trials.