Lipoprotein(a)
Lipoprotein(a), or Lp(a), is a type of lipoprotein particle that is largely determined by genetics. It is structurally similar to LDL but with an additional protein called apolipoprotein(a).
Category: lipids
Also known as: lipoprotein a, lp(a), lpa, lp a, lipoprotein(a), lipoprotein
Reference range: 0–75 nmol/L (Source: ABIM)
Standard unit: nmol/L
High values may indicate
High Lp(a) levels may indicate increased risk of heart disease, stroke, aortic valve stenosis, and atherosclerosis, largely driven by genetic factors.
Low values may indicate
Low Lp(a) levels are generally favorable and associated with lower cardiovascular risk. There are no known clinical concerns with low Lp(a).
Frequently asked questions
- What is a normal Lipoprotein(a) level?
- A typical reference range for Lipoprotein(a) is 0–75 nmol/L (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is Lipoprotein(a) measured in?
- Lipoprotein(a) is most commonly reported in nmol/L. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do Lipoprotein(a) reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track Lipoprotein(a) over time?
- Yes. Upload results from any lab and BloodId charts your Lipoprotein(a) over time against its reference range, so you can see whether the trend is rising, falling, or stable.
Related biomarkers
Source: MedlinePlus, U.S. National Library of Medicine
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