Apolipoprotein B
Apolipoprotein B (Apo B) is a protein found on lipoproteins that carry cholesterol through your bloodstream—particularly those linked to plaque formation in arteries. Each of these lipoproteins carry 1 Apo B protein, meaning Apo B gives a direct measure of circulating athergenic particles. Apo B is considered one of the most accurate markers of atherogenic (plaque-forming) particle burden.
Test details
Sample type
Blood
Time of day
No specific time needed
Fasting required
No
Results timeframe
7 days
Preparation
No special preparation required
What's measured in this test
Apolipoprotein B
Main protein in bad cholesterol (LDL)
Common reasons for testing
- Family History of Heart Disease – Assesses inherited risk factors contributing to cardiovascular conditions.
- Monitoring Cholesterol-Lowering Therapy – Tracks the effectiveness of medications or lifestyle changes aimed at reducing cholesterol levels.
- Assessing Risk for Cardiovascular Diseases – Identifies lipid abnormalities that may increase the risk of heart disease or stroke.