Serum prolactin concentrations increase during pregnancy

Serum prolactin concentrations as a function of time of gestation, showing the increase in prolactin as pregnancy progresses. The zone lines represent the range of values that can be seen.

Data from Tyson JE, Ito P, Guyda H, et al. Studies of prolactin secretion in human pregnancy. Am J Obstet Gynecol 1972; 113:14.

Graphic 82454 Version 2.0

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