Reduced urinary angiotensinogen excretion in preeclampsia.

Objective: This study evaluated urinary angiotensinogen in preeclampsia.

Methods: Normal pregnant (n = 57) and preeclamptic patients (n = 31); Normal pregnant (n = 10) and preeclamptic rats (n = 10) were studied. Urinary angiotensinogen and plasma angiotensin II were assayed by enzyme-linked immunosorbent assay (ELISA).