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December 14, 1979, Vol 242, No. 24 >
ARTICLE | December 14, 1979

Platelet and Leukocyte Counts in Pregnancy

Roy M. Pitkin, MD; David L. Witte, PhD
JAMA. 1979;242(24):2696-2698. doi:10.1001/jama.1979.03300240036023.
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Platelets and leukocytes in venous blood were counted with automated methodology in 23 women studied longitudinally throughout pregnancy and at six weeks after delivery. The average platelet count declined monotonically in a manner consistent with the gestational increase in blood volume. Total leukocyte count rose early in gestation and remained elevated, with neutrophils accounting for the changes. Absolute neutrophil counts during gestation were nearly twice those of the same women postpartum (5.76 vs 3.13çu mm ×10-3.) The monocyte count also tended to increase, whereas lymphocytes, eosinophils, and basophils declined in number.

(JAMA 242:2696-2698, 1979)

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