article
Reproducibility in the Hematology Laboratory: The Microhematocrit Determination
American Journal of Clinical Pathology · 1971 · Vol. 56(1) · pp. 35–39
Paul B. Goldenfarb✉(United States Department of Health and Human Services)Frank P. Bowyer(United States Department of Health and Human Services)Elmer C. Hall(United States Department of Health and Human Services)Effie M. Brosious(United States Department of Health and Human Services)
Abstract
To estimate the overall microhematocrit test error and to determine the relative contributions of reading error, capillary tubes, centrifugation times, and clays to the variation in test results, a prepared erythrocyte suspension was tested repeatedly on six alternate days. Results indicate that the variation caused by reading the hematocrit to the nearest one-half percentage point exceeds that attributable to differences among capillary tubes and centrifugation times.
Clinical Laboratory Practices and Quality ControlDigital Imaging for Blood DiseasesBlood transfusion and managementReproducibilityHematocritCentrifugationCapillary actionChromatographyChemistryMedicineInternal medicineMaterials science
MeSH terms
Analysis of VarianceCentrifugationHematocritHumansMethodsSpecimen HandlingTime Factors
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0.42
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