Serial estimation of serum angiotensin converting enzyme activity during and after pregnancy in a woman with sarcoidosis

Serum angiotensin converting enzyme activities were estimated during pregnancy and the puerperium in a woman with sarcoidosis and a series of normal women. In the patient with sarcoidosis angiotensin converting enzyme activity was raised during pregnancy, particularly at 21 weeks' gestation, yet she remained well with no symptoms to suggest relapse of sarcoidosis. Serum angiotensin converting enzyme activity may not be of value in monitoring sarcoidosis activity during pregnancy.