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Rachel V Thomas

Are You Getting The Right Cholesterol Test? ApoB May Be Better Than LDL

Millions of people around the world undergo blood tests every year to measure <span>LDL</span>, commonly known as "bad" cholesterol. But researchers now suggest that this standard test may not always provide the most accurate picture of heart disease risk.

A new study from Northwestern Medicine found that a blood test measuring apolipoprotein B (<span>ApoB</span>) may be better than LDL cholesterol testing for identifying people who need more intensive treatment to reduce their risk of heart attacks and strokes.

The researchers also found that using ApoB to guide treatment decisions could prevent more cardiovascular events while remaining cost-effective for healthcare systems. The findings were published in the journal <em>JAMA</em>.

"We found that ApoB testing to intensify cholesterol-lowering medication would prevent more heart attacks and strokes than current practice, and that these health benefits were achieved at a cost that represents good value for US healthcare payers," said study lead author Ciaran Kohli-Lynch, Assistant Professor of Preventive Medicine in the Division of Epidemiology at Northwestern University Feinberg School of Medicine.

<h2><span rel="noindex">ApoB vs LDL</span>: What's the Difference?</h2>

Also read: <a href="https://www.healthandme.com/health-wellness/confused-by-your-cholesterol-report-heres-what-ldl-and-apob-really-mean-article-154530945" data-type="tilCustomLink">Confused By Your Cholesterol Report? Here's What LDL And ApoB Really Mean</a>

Doctors have traditionally relied on LDL ("bad") cholesterol and non-HDL cholesterol levels to assess heart disease risk and decide when patients should begin or intensify cholesterol-lowering treatment. While these tests provide useful information, researchers say they do not tell the whole story.

The difference lies in what the two tests measure:

<ul><li><span rel="noindex">LDL cholesterol test</span>: Measures the amount of LDL cholesterol in the blood.</li><li>ApoB test: Measures the number of cholesterol-carrying particles—including LDL and other potentially harmful particles—that can enter artery walls and contribute to plaque buildup.</li></ul>

"Research strongly shows that apolipoprotein B (ApoB) is better at identifying who is at risk because it counts the total number of harmful particles in the blood," Kohli-Lynch said.

According to the researchers, the number of harmful particles may provide a more accurate measure of cardiovascular risk than LDL cholesterol levels alone.

Read More: <a href="https://www.healthandme.com/health-wellness/us-cardiologist-explains-why-2026-aha-cholesterol-guidelines-recommend-starting-young-article-153901892" data-type="tilCustomLink">US Cardiologist Explains Why 2026 AHA Cholesterol Guidelines Recommend Starting Young</a>

In a post on X, Dr. Sudhir, Senior Consultant Neurologist at the Institute of Neurosciences, Apollo Hospitals, Hyderabad, explained that ApoB is a protein found on potentially harmful cholesterol-carrying particles such as LDL and VLDL (very low-density lipoprotein).

"Think of ApoB as a count of the particles capable of entering artery walls and causing plaque. One ApoB is equal to one potentially harmful particle," he said.

Dr. Sudhir explained that two people can have the same LDL cholesterol level but very different numbers of cholesterol-carrying particles. The person with more particles will usually have a higher ApoB level and, potentially, a greater risk of cardiovascular disease.

He added that ApoB often provides a more accurate assessment of heart disease risk than LDL cholesterol alone.

Despite growing evidence supporting ApoB, the test is still not widely used in routine clinical practice because it generally requires an additional blood test beyond the standard cholesterol panel, increasing both cost and inconvenience.

"Our study asked: Is it worth spending extra money to use ApoB instead of LDL to guide treatment intensification?" Kohli-Lynch said.

Dr. Sudhir suggested that ApoB testing should be considered for:

<ul><li>people with diabetes, </li><li>prediabetes,</li><li>metabolic syndrome, </li><li>obesity, </li><li>elevated <span rel="noindex">triglycerides</span>,</li><li>strong family history of heart disease.</li></ul>

<h2><span rel="noindex">New Cholesterol Guidelines</span></h2>

Indians Face Unique Heart Risk Factors, Cardiologist Warns #shorts #shortsfeed #heartattack

<a href="https://www.healthandme.com/health-news/ahas-new-dyslipidemia-guidelines-stress-early-screening-lifestyle-management-article-153834562" data-type="tilCustomLink">New Cholesterol Guidelines </a> have more cholesterol-lowering medications available than ever before.

Earlier this year, the American Heart Association and 10 other medical organisations released updated guidelines recommending that many people begin cholesterol-lowering therapy at younger ages.

"This means it is increasingly important to accurately identify who would benefit most from intensive treatment," Kohli-Lynch said.

The updated guidelines also recommend measuring ApoB, particularly in people with high triglycerides, diabetes or in situations where LDL cholesterol levels may underestimate the number of harmful cholesterol-carrying particles.

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Millions of people around the world undergo blood tests every year to measure LDL, commonly known as "bad" cholesterol. But researchers now suggest that this standard test may not always provide the most accurate picture of heart disease risk.A new study from Northwestern Medicine found that a blood test measuring apolipoprotein B (ApoB) may be better than LDL cholesterol testing for identifying people who need more intensive treatment to reduce their risk of heart attacks and strokes.The researchers also found that using ApoB to guide treatment decisions could prevent more cardiovascular events while remaining cost-effective for healthcare systems. The findings were published in the journal JAMA."We found that ApoB testing to intensify cholesterol-lowering medication would prevent more heart attacks and strokes than current practice, and that these health benefits were achieved at a cost that represents good value for US healthcare payers," said study lead author Ciaran Kohli-Lynch, Assistant Professor of Preventive Medicine in the Division of Epidemiology at Northwestern University Feinberg School of Medicine.ApoB vs LDL: What's the Difference?Also read: Confused By Your Cholesterol Report? Here's What LDL And ApoB Really MeanDoctors have traditionally relied on LDL ("bad") cholesterol and non-HDL cholesterol levels to assess heart disease risk and decide when patients should begin or intensify cholesterol-lowering treatment. While these tests provide useful information, researchers say they do not tell the whole story.The difference lies in what the two tests measure:LDL cholesterol test: Measures the amount of LDL cholesterol in the blood.ApoB test: Measures the number of cholesterol-carrying particles—including LDL and other potentially harmful particles—that can enter artery walls and contribute to plaque buildup."Research strongly shows that apolipoprotein B (ApoB) is better at identifying who is at risk because it counts the total number of harmful particles in the blood," Kohli-Lynch said.According to the researchers, the number of harmful particles may provide a more accurate measure of cardiovascular risk than LDL cholesterol levels alone.What Is ApoB?Read More: US Cardiologist Explains Why 2026 AHA Cholesterol Guidelines Recommend Starting YoungIn a post on X, Dr. Sudhir, Senior Consultant Neurologist at the Institute of Neurosciences, Apollo Hospitals, Hyderabad, explained that ApoB is a protein found on potentially harmful cholesterol-carrying particles such as LDL and VLDL (very low-density lipoprotein)."Think of ApoB as a count of the particles capable of entering artery walls and causing plaque. One ApoB is equal to one potentially harmful particle," he said.Dr. Sudhir explained that two people can have the same LDL cholesterol level but very different numbers of cholesterol-carrying particles. The person with more particles will usually have a higher ApoB level and, potentially, a greater risk of cardiovascular disease.He added that ApoB often provides a more accurate assessment of heart disease risk than LDL cholesterol alone.Despite growing evidence supporting ApoB, the test is still not widely used in routine clinical practice because it generally requires an additional blood test beyond the standard cholesterol panel, increasing both cost and inconvenience."Our study asked: Is it worth spending extra money to use ApoB instead of LDL to guide treatment intensification?" Kohli-Lynch said.Dr. Sudhir suggested that ApoB testing should be considered for:people with diabetes, prediabetes,metabolic syndrome, obesity, elevated triglycerides,strong family history of heart disease.New Cholesterol Guidelines      New Cholesterol Guidelines  have more cholesterol-lowering medications available than ever before.Earlier this year, the American Heart Association and 10 other medical organisations released updated guidelines recommending that many people begin cholesterol-lowering therapy at younger ages."This means it is increasingly important to accurately identify who would benefit most from intensive treatment," Kohli-Lynch said.The updated guidelines also recommend measuring ApoB, particularly in people with high triglycerides, diabetes or in situations where LDL cholesterol levels may underestimate the number of harmful cholesterol-carrying particles.

are you getting the right cholesterol test? apob may be better than ldl

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