Using fetal blood sampling, the diagnosis of triploidy can be strongly
suspected on the basis of the peculiar hematological picture. Triploi
d fetuses present with anemia, marked anisopoikilocytosis, and grossly
increased mean corpuscular volume, associated with thrombocytopenia a
nd significant platelet anisocytosis. These findings are of considerab
le immediate diagnostic value. They allow physicians to immediately co
untry Words sel parents about the prognosis of the fetus. In case of f
etal or neonatal distress, this information could orientate decisions
about obstetrical and pediatric management while waiting for the defin
itive diagnosis.