Diurnal changes in plasma glucose and insulin in normal late pregnancy Diurnal changes in plasma glucose and insulin in normal late pregnancy. (Redrawn from Phelps, 1981.) Source: Maternal Physiology, Williams Obstetrics, 24e Citation: Cunningham F, Leveno KJ, Bloom SL, Spong CY, Dashe JS, Hoffman BL, Casey BM, Sheffield JS. Williams Obstetrics, 24e; 2013 Available at: https://obgyn.mhmedical.com/DownloadImage.aspx?image=/data/books/1057/p9780071798938-ch004_f005.png&sec=59789639&BookID=1057&ChapterSecID=59789139&imagename= Accessed: October 20, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved