Serum angiotensin-converting enzyme in sarcoidosis

Serum angiotensin-converting enzyme (SACE) activity was measured in 29 patients with sarcoidosis, 51 reference subjects, 7 patients with active tuberculosis and 8 patients with other lung diseases. SACE activity was increased in 93% of the patients with sarcoidosis as compared with the reference subjects. Patients with active tuberculosis and other lung diseases did not have increased SACE activity.