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. Author manuscript; available in PMC: 2018 Jun 1.
Published in final edited form as: J Matern Fetal Neonatal Med. 2016 Aug 18;30(12):1434–1436. doi: 10.1080/14767058.2016.1216540

Table 1.

Total and unbound plasma progesterone concentrations in maternal and fetal plasma (11)

Sources of plasma samples Total* ng/ml Unbound*
% ng/ml
Luteal phase (n=5) 17 ± 3 4.83 ± 0.1 0.82 ± 0.14
Term pregnancy (n=10) 160 ± 10 5.02 ± 0.1 8.03 ±0.50
Umbilical vein at term (n=10) 788 ± 30 7.01 ± 0.2 55.20 ± 2.10
*

Means ± S.E.