In most cases, your doctor will diagnose sarcoidosis based on three factors:
It is common for sarcoidosis to be suspected based on abnormal results on a chest X-ray ordered for unrelated reasons. For example, a person who is otherwise healthy may have a chest X-ray as a requirement for his or her work and discover abnormalities that suggest the diagnosis.
Besides the chest X-ray and biopsy mentioned above, additional tests may be needed. These tests may be done to rule out other illnesses or to assess the amount of organ damage caused by sarcoidosis. Some of the most common tests are:
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