A normal, adult range for CD4 counts is 500-2000 cells per ul and 33-55% in my lab. Your results may differ slightly and it is important to establish your own ranges. However, I also want to know what ranges other labs have established. Some references follow: Hulstaert, F. et al, Age-related changes in human blood lymphocyte subpopulations, Clin. Immunol. and Immunopath. 70: 152-158, 1994 Hannet, I. et al, Developmental and maturational changes in human blood lymphocyte subpopulations, Immunology Today, 13: 215-218, 1992 Goto, M. and K. Nishioka, Age and Sex-related changes of the lymphocyte subsets in healthy individuals. J. of Gerontology, 44: M51-56, 1989 Bishop, P. et al., Immunophenotypes by flow cytometry: a longitudinal study in healthy individuals. Diagnostic and Clinical Immunol. 5: 232-240, 1988 Ohta, Y. et al., Normal values of peripheral lymphocyte populations and T cell subsets at a fixed time of day, Clin. exp. Immunol. 64: 146-149, 1986 Hope this helps. Tony Bakke
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