Lp(a): the inherited risk you test once
Lp(a) is set by your genes and barely changes through life. Testing it once tells you something cholesterol cannot.
What is Lp(a)?
Lp(a) is an LDL-like particle with an extra protein, apolipoprotein(a), attached to ApoB. Your level is set almost entirely by your genes.
It is fixed early and stays fairly steady for life. Diet, exercise and weight move it very little.
About one in five people worldwide carries a raised level. Most of them have never heard of it, let alone been tested.
So this is a common risk that hides in plain sight. A standard cholesterol panel walks straight past it.
Why it is different
Most cholesterol numbers reflect your lifestyle. Lp(a) does not change much with lifestyle modifications, which makes it a very different marker of cardiovascular risk.
It shows a risk you were born with, not one you built up. That makes it a piece of information rather than a target to chase.
A raised level adds to heart and vascular risk over a lifetime.
It can also affect the aortic valve, the valve at the exit of the heart. That is a second reason a high level is worth knowing.
Why test it once
Because it barely changes, one measurement is usually enough for life. If it is normal, you rarely need to repeat it.
A single test settles a question that would otherwise stay hidden. It is one of the few numbers you can check once and file away.
Many people find out only after an early heart event in the family. Testing ahead of that turns a shock into a plan.
The numbers that matter
| Reading | Lp(a) (nmol/L) | What it suggests and what you should do |
|---|---|---|
| Optimal | below 75 | Minimal inherited cardiovascular risk |
| Moderate | 75 to 125 | Worth a review with your doctor to discuss strategies to reduce cardiovascular risk |
| Needs attention | above 125 | Needs a review with your doctor |
Only a high value is flagged here, and a low result is reassuring. Ranges come from the PROTOCOL biomarker reference.
What a high result means
A high Lp(a) does not respond much to diet or exercise. So the answer is not to fight the number itself.
Instead, the strategy is to work on ways to reduce overall cardiovascular risk, using factors that are within your control. That means working on modifiable risk factors for heart disease, such as your ApoB, LDL, blood pressure, blood sugar, and body weight.
It runs in families, so it is worth telling close relatives. A parent, sibling or child may carry the same level and not know.
Who should check it
Anyone with a family history of early heart disease should consider it.
Anyone who wants to find out more about their inherited cardiovascular risk should consider an Lp(a) test.
If you have borderline risk factors, like borderline cholesterol, or blood sugar, knowing your Lp(a) will be beneficial, as a high value may push your management plan towards a more intensive approach, and certain key medications may be indicated.
What it does not do
A raised Lp(a) is not a diagnosis and not a reason to panic. It is one piece of a larger risk picture.
Plenty of people with a high level never have a heart problem. It shifts the odds, but it does not decide your future.
Speak to your doctor about Lp(a) testing, and let it guide your subsequent management plan.
How it is measured
Lp(a) is a single blood test, taken like any other.
It is not always on a standard panel. You may need to ask for it specifically.
What treatment can do
No widely used medicine lowers Lp(a) much today. New treatments aimed directly at it are in trials, not yet standard care.
The plan for now will be to lower your cardiovascular risk as much as you can.
This is a space to watch over the next few years. For now, the levers are the familiar ones.
How high is high?
Risk rises gradually as the level climbs. The higher your number, the higher your cardiovascular risk.
The band above 125 is where doctors pay closest attention.
A common misunderstanding
A high Lp(a) does not mean your lifestyle failed you. It is inherited, not something caused by unhealthy habits.
A normal result does not cancel your other risks either. It is still important to look after your blood pressure, your weight and your cholesterol.
What to do next
If you have never had it checked, request for it at your next blood test.
If it comes back raised, speak to your doctor about this, and you may be recommended for earlier cardiac evaluation, and other lifestyle changes.
Make sure to bring up any family history of premature heart disease to your doctor, as this gives more context to the clinician.
The bottom line
One test, once in your life, closes a real gap. It reveals a risk your cholesterol cannot show.
- Lipoprotein(a) and its Significance in Cardiovascular Disease. JAMA Cardiology. 2022
What we published, what we read, and the one thing worth changing. Nothing to buy.
The markers a standard panel leaves out.
The Core Health Test measures 100+ markers, with a doctor to walk you through what each one means for you.
ApoB and Lp(a) in the Core Health Test