Serum Angiotensin-Converting Enzyme (sACE) Level

Why Might You Need This Test?

Your healthcare provider may order this test if you have symptoms like persistent coughing, shortness of breath, or swelling in your legs or abdomen. It could also be part of evaluating conditions such as lymphangioleiomyomatosis (LAM) or certain types of sarcoidosis, or to monitor treatment progress for these or other related conditions.

What Does a Result Mean?

ACE levels can vary based on health status, age, and other factors. While reference ranges differ by lab, elevated levels might suggest conditions affecting the lungs or lymphatic system, while lower levels could indicate other health concerns. Always discuss your results with your provider for personalized interpretation.

Sample Collection and Preparation

A blood sample is taken from a vein, usually in your arm. The blood is collected in a special tube and sent to the lab for analysis. You may be asked to fast for a few hours before the test, but this depends on your provider’s instructions.

What to Expect During the Test

The process is quick and typically painless. You may feel a slight pinch or sting when the needle is inserted, but most people experience minimal discomfort. Afterward, you can resume normal activities immediately.