Lipoprotein(a)

Also written Lp(a)

CardiovascularMeasured in nmol/L

What it measures

An LDL-like particle with an additional apolipoprotein(a) tail. Concentration is set almost entirely by inherited genetics and is stable across your lifetime.

Why it matters

Elevated Lp(a) is one of the most common inherited cardiovascular risk factors, affecting roughly one in five people, and it is invisible on a standard lipid panel. It is genuinely worth measuring once.

Where the claimed ranges actually sit

Measured in nmol/L. Each row is one claim about where your result should fall.

What a laboratory reportsWhat a seller markets as “optimal”

Laboratory reference range< 75 nmol/L

Laboratory reference intervals; some labs report mg/dL instead, which is not directly convertible

Under 50 nmol/LA< 50 nmol/L

Preventive cardiology and longevity platforms

›View as table

Claim	Range	Source
Laboratory reference range	< 75 nmol/L	Laboratory reference intervals; some labs report mg/dL instead, which is not directly convertible
Under 50 nmol/L	< 50 nmol/L	Preventive cardiology and longevity platforms

Where the sources disagree

The dispute is not about whether Lp(a) matters; it does. It is about whether a consumer panel should measure it repeatedly. Because the value is genetically fixed, one lifetime measurement is sufficient for nearly everyone. Panels that re-run it every six months are billing you annually for a number that will not move. Note also that nmol/L and mg/dL results are not reliably interconvertible, so comparing across platforms that report different units is unsound.

The marketed ranges, examined

Each claim gets its strongest possible case before it gets its criticism. Several of these are substantially correct.

Under 50 nmol/L

Promoted by preventive cardiology and longevity platforms

ATrial-supported

The strongest case for it

Mendelian randomization supports a causal role for Lp(a) in atherosclerotic disease and aortic stenosis, and risk rises continuously rather than at a clean threshold. The lower cutoff reflects that continuity.

What it leaves out

Lp(a) is roughly 80–90% genetically determined and essentially unmodifiable by diet, exercise, or current standard therapy. Selling a target for a number you cannot change (without saying so) converts useful risk information into an anxiety product.

Before you act on your result

Test once in a lifetime unless you start a therapy specifically targeting it.
Results in mg/dL and nmol/L cannot be converted with a fixed factor; assays differ.
An elevated result should prompt cascade screening of first-degree relatives.

Last reviewed July 28, 2026How we grade evidence and attribute claims →

More in Cardiovascular

Apolipoprotein B

ApoB

LDL Cholesterol

LDL-C

HDL Cholesterol

HDL-C

Triglycerides

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