Serum angiotensin-converting-enzyme in Crohn's disease

The serum angiotensin-converting-enzyme levels in patients with Crohn's disease have been determined. There is no significant difference in the serum levels of angiotensin-converting-enzyme in patients with active Crohn's disease, inactive Crohn's disease or Crohn's disease with demonstrated granuloma and normal controls. Patients with active Crohn's disease who are no steroid treatment do have significantly lower levels.