title: Complete blood counts from umbilical cords of healthy term newborns by two automated cytometers.
abstract: Complete blood counts (CBC) of umbilical cord blood from 123 healthy term newborns were simultaneously performed with two different cytometers using laser as a light source. Medians (95% range) were: WBC 14.2 (7.8-24.3) x 10(9)/l, platelets 265 (174-363) x 10(9)/l, Hb 15.7 (12.5-18.2) g/dl, RBC 4.6 (3.9-5.5) x 10(12)/l, MCV 106 (95-113) fl, PCV 0.49 (0.40-0.56), and MCH 33.8 (30.3-36.4) pg. Reticulocytes were 149 (95-212) x 10(9)/l or 3.3 (2.0-4.7)%; erythroblasts 5 (0-24) per 100 WBC or 0.53 (0.00-3.20) x 10(9)/l. The counters agreed well except for MCHC. WBC counts showed the smallest difference irrespective of erythroblast number; platelets showed the largest difference. The lower limit for normal Hb should be fixed at 12.5 g/dl for the adequate diagnosis of anaemia from cord blood of term newborns.
authors.affiliation: Department of Neonatology, Charité-Virchow Hospital, Humboldt University, Berlin, Germany.
authors.forename: M M
authors.initials: MM
authors.lastname: Walka
authors.forename: J
authors.initials: J
authors.lastname: Sonntag
authors.forename: A
authors.initials: A
authors.lastname: Kage
authors.forename: J W
authors.initials: JW
authors.lastname: Dudenhausen
authors.forename: M
authors.initials: M
authors.lastname: Obladen
mesh_terms: D001772:Blood Cell Count; D004906:Erythrocyte Count; D005260:Female; D005312:Fetal Blood / Q000166:cytology*; D005434:Flow Cytometry / Q000295:instrumentation / Q000379:methods; D006801:Humans; D007231:Infant, Newborn; D007958:Leukocyte Count; D007962:Leukocytes / Q000166:cytology; D008297:Male; D011446:Prospective Studies; D012016:Reference Values; D012156:Reticulocytes / Q000166:cytology