Sarcoidosis | Diagnosis & Tests


How is sarcoidosis diagnosed?

To find out if you have sarcoidosis, your doctor will perform a physical exam. He or she will take an X-ray and a biopsy (a tissue sample) from 1 or more areas of your body. Your doctor will want to rule out other diseases that can cause similar symptoms.

Your doctor may also order a blood test to determine the level of a chemical called angiotensin-converting enzyme (ACE) in your blood. Knowing your level of ACE can help your doctor follow the course of your disease and check your response to treatment. Your doctor will probably do other tests to see what areas of your body are affected by sarcoidosis. A test of your breathing may be performed, as well as an electrocardiogram (ECG) to check how well your heart works.


Sarcoidosis: A Primary Care Review by MH Belfer, M.D., and RW Stevens, M.D. (American Family Physician December 01, 1998,

Written by editorial staff

Reviewed/Updated: 04/14
Created: 09/00