Description
Why It’s Done:
The ApoA1 test is ordered to:
• Evaluate cardiovascular risk, especially in combination with Apolipoprotein B (ApoB) testing
• Assess HDL function and cholesterol transport efficiency
• Monitor treatment response in patients on lipid-lowering therapies
• Diagnose rare inherited disorders of lipid metabolism (e.g., Tangier disease)
It may be especially useful when:
• Total cholesterol and HDL levels provide unclear cardiovascular risk insights
• There’s a family history of premature heart disease
• The patient has metabolic syndrome, type 2 diabetes, or other chronic conditions
Preparation:
• Fasting is usually not required, but some doctors may recommend fasting (8–12 hours) for a more comprehensive lipid profile.
• A blood sample will be drawn from a vein in the arm.
• Inform your doctor about:
o Any medications or supplements, especially those affecting lipid metabolism
o Existing conditions such as liver disease, kidney disease, or malnutrition


