title: "6 markers/5 colors" extended white blood cell differential by flow cytometry.
abstract: Electronic white blood cell (WBC) differential by standard cytology (hematology analyzer and visual inspection of blood smears) is limited to five types and identification of abnormal cells is only qualitative, often problematic, poorly reproducible, and labour costing. We present our results on WBC differential by flow cytometry (FCM) with a 6 markers, 5 colors CD36-FITC/CD2-PE+CRTH2-PE/CD19-ECD/CD16-Cy5/CD45-Cy7 combination, on 379 subjects, with detection of 12 different circulating cell types, among them 11 were quantified. Detection of quantitative abnormalities of whole leucocytes, neutrophils, eosinophils, basophils, monocytes, or lymphocytes was comparable by FCM and by standard cytology in terms of sensitivity and specificity. FCM was better than standard cytology in detection and quantification of circulating blast cells or immature granulocytes, with a first lineage orientation in the former case. All cases of lymphocytosis, with lineage assignment, were detected by FCM. FCM identified a group of patients with excess of CD16pos monocytes as those having an inflammatory syndrome. WBC differential by FCM is at least as reliable as by standard cytology. FCM superiority consists in identification and systematic quantification of parameters that cannot be assessed by standard cytology such as lineage orientation of blast cells or lymphocytes, and expression of markers of interest such as CD16 on inflammatory monocytes.
authors: Laboratoire d'Hématologie, Hôpital Dupuytren, Limoges, France.
authors: Jean-Luc
authors: JL
authors: Faucher
authors: Charlotte
authors: C
authors: Lacronique-Gazaille
authors: Elise
authors: E
authors: Frébet
authors: Franck
authors: F
authors: Trimoreau
authors: Magali
authors: M
authors: Donnard
authors: Dominique
authors: D
authors: Bordessoule
authors: Francis
authors: F
authors: Lacombe
authors: Jean
authors: J
authors: Feuillard
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015415:Biomarkers / Q000378:metabolism; D019070:Cell Lineage; D002469:Cell Separation / Q000379:methods*; D005260:Female; D005434:Flow Cytometry / Q000379:methods*; D006801:Humans; D007958:Leukocyte Count; D007962:Leukocytes / Q000166:cytology*; D008297:Male; D008875:Middle Aged; D012372:ROC Curve; D015203:Reproducibility of Results
chemical_list: D015415:Biomarkers