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AMNIOTIC FLUID TESTOSTERONE AND FETAL SEX DETERMINATION IN THE FIRST HALF OF PREGNANCY
Author(s) -
Zondek T.,
Mansfield M. D.,
Zondek L. H.
Publication year - 1977
Publication title -
bjog: an international journal of obstetrics and gynaecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.157
H-Index - 164
eISSN - 1471-0528
pISSN - 1470-0328
DOI - 10.1111/j.1471-0528.1977.tb12687.x
Subject(s) - fetus , amniotic fluid , gestation , testosterone (patch) , gestational age , medicine , pregnancy , endocrinology , obstetrics , andrology , physiology , biology , genetics
Summary The concentration of freely extractable testosterone in amniotic fluid was measured in 54 patients whose gestational ages ranged from 10 to 20 weeks; 31 of the fetuses were male and 23 were female. The mean amniotic fluid testosterone concentration was significantly higher with a male fetus than with a female fetus. On only 7 out of 31 occasions was the presence of a male fetus associated with amniotic fluid testosterone values below 100 pg/ml, whereas the values associated with a female fetus were never higher than 90 pg/ml. After 14 weeks gestation no amniotic fluid testosterone level was lower than 120 pg/ml in the presence of a male fetus.