eCite Digital Repository

Australasian CD34+ quality assurance program and rationale for the clinical utility of the single-platform method for CD34+ cell enumeration


Chang, A and Raik, E and Marsden, KA and Ma, DDF, Australasian CD34+ quality assurance program and rationale for the clinical utility of the single-platform method for CD34+ cell enumeration, Cytotherapy, 6, (1) pp. 50-61. ISSN 1465-3249 (2004) [Refereed Article]

DOI: doi:10.1080/14653240310004575


Background. Enumeration of CD34+ cells should be accurate and comparable between institutions, particularly when making clinical decisions, evaluating data, and in clinical trials. An Australasian CD34+ quality assurance program (QAP) has been established to compare CD34+ cell results and method (Part 1). Unexpected variation in WBCCs led to Part 2 of this report. Methods. Part 1: Methods reagents and results were evaluated for 12 QAP samples analyzed by 36-43 centers. Part 2: The effects of different anticoagulants on WBCC of 12 peripheral blood samples (PBs) were compared using three cell counters. To test the validity of applying the conclusions to clinical samples, the WBCCs of leukapheresed products and BM harvest were also compared. Results. Part 1: In some samples, WBCCs determined by certain cell-counter groups were significantly different. Results for percentage of CD34+ and CD34+ / μL suggest that standardization on the lyse-no-wash and single platform (SP) method reduces variation of results between institutions. Part 2: Using different counters, PB WBCC in ACD-A showed greater variation than the same PB in EDTA. For PB in different anticoagulants, the extent of difference in WBCC for the same PB is dependent on the counter used. Discussion. This CD34 QAP has identified ACD-A as an additional factor that contributes to the disparate WBCCs, which may further compromise the accuracy of CD34+ cell counts obtained by the dual platform (DP) method, especially for leukapheresed products. In order to achieve greater accuracy within individual institutions, as well as permitting more reliable inter-institutional comparisons, our data supports the adoption of the SP as the standard method for CD34+ cell enumeration. © 2004 ISCT.

Item Details

Item Type:Refereed Article
Research Division:Biomedical and Clinical Sciences
Research Group:Cardiovascular medicine and haematology
Research Field:Haematology
Objective Division:Health
Objective Group:Clinical health
Objective Field:Diagnosis of human diseases and conditions
UTAS Author:Marsden, KA (Dr Katherine Marsden)
ID Code:31127
Year Published:2004
Web of Science® Times Cited:8
Deposited By:Medicine
Deposited On:2004-08-01
Last Modified:2005-04-22

Repository Staff Only: item control page