Open AccessTHE LACK OF SIGNIFICANT CHANGE IN PLASMA PROGESTERONE AND ESTRADIOL‐17β LEVELS BEFORE THE ONSET OF HUMAN LABOR
Author(s) -
HartikainenSorri A.L.,
Kauppila A.,
Tuimala R.,
Viinikka L.,
Ylikorkala O.
Publication year - 1981
Publication title -
acta obstetricia et gynecologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.401
H-Index - 102
eISSN - 1600-0412
pISSN - 0001-6349
DOI - 10.3109/00016348109155467
Subject(s) - radioimmunoassay , medicine , endocrinology , pregnancy , hormone , gestational period , gestational age , gestation , biology , genetics
. Maternal plasma levels of progesterone and estradiol‐17β were measured weekly by radioimmunoassay in 15 healthy women during the last trimester of normal pregnancy. There was a large individual variation for both hormones. The mean concentrations rose slightly with advancing gestational age but the ratio of progesterone to estradiol did not change. It is apparent that the onset of spontaneous labor cannot be predicted by measuring the levels of progesterone and estradiol‐17β in maternal peripheral plasma.