|Fasting or Non-fasting||Fasting. You should fast 9–12 hours before taking this test.|
|Turnaround Time for Results|
The apolipoprotein A1 (APO A-1) test measures the amount of protein called apolipoprotein A-1 in the blood. APO A-1 is the main protein present in high density lipoprotein (HDL) or “good” cholesterol and it helps lower the risk of heart disease by removing cholesterol from the body.
The apolipoprotein A-1 test is a simple blood test collected via venipuncture. The results are reported as milligram per deciliter (mg/dL).The higher the APO A-1 levels are the better.
Lower than normal APO A-1 levels can result from:
- Poor diet or obesity
- Certain liver problems
- Kidney problems and renal failure
- Atherosclerosis (heart disease)
- Certain familial or inherited diseases
- Certain medications (such as diuretics, androgens)
Am I required to fast for this test?
Yes. You should fast 9–12 hours before taking this test.
What are normal levels?
APO A-1 levels above 120 mg/dL are considered normal. The normal levels can vary depending on the laboratory. The exact range will be indicated on your report.
What might abnormal levels indicate?
Lower than normal APO A-1 levels may increase your risk of atherosclerosis and heart disease. Certain diseases, lifestyle habits (smoking, poor diet), and medications can cause low APO A-1. Higher than normal APO A-1 levels may be caused by medications (such as niacin, estrogen, and statins), weight loss, and certain genetic diseases.
Why do I need it?
You may consider taking the APO A-1 test to assess your risk of heart disease or if you think you suffer from disorders that cause abnormal APO A-1 levels.
What type of doctor should I see if results are abnormal?
See your primary health care provider who may refer you to a specialist, such as a cardiologist.