The ACE test measures the level of angiotensin-converting enzyme (ACE) in the blood.
Serum angiotensin-converting enzyme; SACE
How the Test is Performed
A blood sample is needed.
How to Prepare for the Test
Follow your health care provider's instructions for not eating or drinking anything for up to 12 hours before the test. If you are on steroid medicine, ask your provider if you need to stop the medicine before the test, because steroids can decrease ACE levels. Do not stop any medicine before talking to your provider.
How the Test will Feel
When the needle is inserted to draw blood, some people feel moderate pain. Others feel only a prick or stinging. Afterward, there may be some throbbing or slight bruising. These soon go away.
Why the Test is Performed
This test is commonly ordered to help diagnose and monitor a disorder called sarcoidosis. People with sarcoidosis may have their ACE level tested regularly to check how severe the disease is and how well treatment is working.
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, Bethanne Black, and the A.D.A.M. Editorial team.