THE EXCRETION OF OESTRONE-OESTRADIOL AND OESTRIOL IN NORMAL HUMAN PREGNANCY

Abstract
The excretion of estrone plus estradiol in normal pregnancy has been determined on the basis of 242 twenty-four hour urine samples from 16 women. Estriol was estimated in the same urine samples and the ratio estriol/estrone + estradiol was calculated. The 95% confidence limits were calculated from the 10th week of pregnancy until birth. The excretion of estrone-estradiol increased from about 100 [mu]g/24 hr. in the 10th week to about 2000 [mu]g/24 hr. around term, while estriol increased from about 0.5 mg/24 hr. to about 25 mg/24 hr.