|Fasting or Non-fasting||Fasting. You should fast 9–12 hours before taking this test.|
|Turnaround Time for Results|
The apolipoprotein B test measures the amount of protein called apolipoprotein B (also known as APO B or APO B-100) in the blood. APO B is the main protein present in low density lipoprotein (LDL) or “bad” cholesterol and high APO B levels are indicative of higher risk of heart disease.
The apolipoprotein A-1 test is a simple blood test collected via venipuncture. The results are reported as milligrams per deciliter (mg/dL).The lower the APO B levels are, the better.
Target APO B levels:
- >100 mg/dL if low to intermediate risk of atherosclerosis
- > 80 mg/dL if high risk of atherosclerosis
Am I required to fast for this test?
Yes. You should fast 9–12 hours before taking this test.
What are normal levels?
The normal values can vary depending on the laboratory. The exact range will be indicated on your report. APO B levels below 100 mg/dL are considered normal for those with low to intermediate risk of atherosclerosis. If you have a high risk of atherosclerosis (eg, have diabetes or cardiovascular disease), your APO B levels should be below 80 mg/dL.
What might abnormal levels indicate?
Higher than normal APO B levels may increase your risk of atherosclerosis and heart disease. Levels higher than 120 mg/dL indicate high risk. Some medications (statins), lifestyle habits (poor diet) and chronic diseases (diabetes) can affect the test results.
Why do I need it?
You may consider taking the APO B test to assess your risk of heart disease.
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.