Apolipoprotein CII (apoCII) is a protein found in large fat particles absorbed from the gastrointestinal tract. It is also found in very low density lipoprotein (VLDL), which is made up of mostly triglycerides.
This article discusses the test used to check for apoCII in a sample of your blood.
ApoCII; Apoprotein CII; ApoC2
How the test is performed
A blood sample is needed. For information on how this is done, see: Venipuncture
How to prepare for the test
You may be told not to eat or drink anything for 4 - 6 hours before the test.
How the test will feel
When the needle is inserted to draw blood, you may feel moderate pain, or only a prick or stinging sensation. Afterward, there may be some throbbing.
Why the test is performed
ApoCII measurements can help to determine the specific type or cause of high blood lipids (hyperlipidemia).
The normal range is 3 - 5 mg/dL. However, apo CII is usually reported as present or absent.
Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
David Zieve, MD, MHA, Medical Director, A.D.A.M. Health Solutions, Ebix, Inc. David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M. Health Solutions, Ebix, Inc.