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PROGESTERONE IN UTERINE VENOUS PLASMA OF THE PREGNANT EWE
Author(s) -
Ronaldson JW
Publication year - 1969
Publication title -
australian journal of experimental biology and medical science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.999
H-Index - 104
eISSN - 1440-1711
pISSN - 0004-945X
DOI - 10.1038/icb.1969.165
Subject(s) - uterus , venous blood , endocrinology , pregnancy , medicine , biology , genetics
Summary The mean systemic level of progesterone, 17 ± 4.2 ng./ml. plasma, remains relatively constant throughout pregnancy. Comparison of the levels of progesterone in the jugular and uterine venous plasmas shows that the level rises from mating to 50 to 60 ng./ml. at about three weeks before term. The uterus is at this stage calculated to be releasing about 50 ng. progesterone per day into the uterine venous plasma. The Allen correction factor has been adapted for non‐linear background absorption.