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Apolipoprotein B details

What Apolipoprotein B shows

Apolipoprotein B (ApoB) is the main structural protein found on LDL and other 'bad' cholesterol particles (including VLDL and Lp(a)), with each particle carrying exactly one ApoB molecule โ€” which means an ApoB level is essentially a direct count of how many potentially artery-clogging particles are circulating in your blood. Because standard LDL cholesterol measures the amount of cholesterol these particles carry rather than how many particles there are, ApoB is increasingly considered a more accurate cardiovascular risk marker, especially in people with diabetes, obesity, or metabolic syndrome, where particle number and cholesterol content can be mismatched. Many cardiologists now use ApoB alongside or in place of standard LDL to guide risk assessment and treatment decisions.

Higher ApoB can point to raised heart risk

More particles that carry cholesterol into artery walls. Often there are no symptoms.

Who might consider it:

  • A family history of heart disease
  • High triglycerides, diabetes or a large waist
  • LDL cholesterol that looks normal while other risks are present
  • Taking cholesterol-lowering medication and checking how well it works

What can affect your result

Medications

Statins and other cholesterol-lowering drugs lower ApoB.

Diet and weight

Diets high in saturated fat and excess weight raise ApoB.

Other conditions

An underactive thyroid, diabetes and kidney disease can raise ApoB.

Normal ranges

Typical adult range

52โ€“80 mg/dL

Most labs report a range close to this

Above 80 mg/dL

Considered high. Linked to higher risk of heart disease.

Each lab sets its own reference range. Always compare your result with the range printed on your report, and review it with a healthcare provider.

Preparation

  • Fasting is usually not needed. Follow your lab's instructions if it asks you to fast.
  • Continue prescription medication, including cholesterol-lowering drugs, unless your provider advises otherwise.

Tests that include Apolipoprotein B

Labcorp Not offered
Labcorp Not offered
Quest Not offered
Labcorp Not offered
Quest Not offered
Quest Not offered
Quest Not offered
Quest Not offered
Labcorp Not offered
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