The Distribution of Estrogens in the Blood of Pregnant and Non-pregnant Women1

Abstract

In non-pregnant ?? the blood cells contain twice as much or more estrogenic hormones/unit volume as the blood serum. During pregnancy estrogenic hormones were found equally distributed between the blood cells and the blood serum. No significant difference in the amts. of estrogen were present in red blood cells and in a mixture of red and white blood cells observed in either pregnant or non-pregnant individuals.