Sysmex Journal International

2002Vol.12 No.1


Reference Range of Platelet Count in Normal Pregnancy using Sysmex SE-9500


M.Maconi*1, B.Casolari*2, M.Collell*1, and A.M.Cenci*2

*1 Laboratory of Clinical Pathology, Azienda Ospedaliera O.I.R.M.-S.Anna, Torino, Italy.
*2 Laboratory of Clinical Pathology, Azienda AUSL, Ospedale S. Agostino, Modena, Italy.


We performed a study on 210 pregnant women to determine platelet reference ranges and to evaluate differences with a control group of 210 healthy non-pregnant women using the Sysmex SE-9500. During the second and third trimesters of pregnancy a decrease in platelet count (PLT) occurred but this was not statistically significant. However, during the same period statistically significant increases were noted in mean platelet volume (MPV), platelet large cell ratio (P-LCR) and platelet distribution width (PDW). It is important that haematologists and obstetricians are aware of these different reference ranges during pregnancy.


Platelet, Pregnancy, Reference Range, Automated Hematology Analyzer, SE-9500

Received 28 May, 2002; Accepted 7 June, 2002