Document 3053 DOCN M94A3053 TI Precision and stability of CD4, 8 and 3 values in HIV+ and HIV-populations in Shirati Tanzania as evaluated by FACSCount. DT 9412 AU Strauss K; Brubaker G; Kumbi D; Shao J; Krenkler W; Blattner W; Levin A; Becton Dickinson, Europe, Belgium. SO Int Conf AIDS. 1994 Aug 7-12;10(1):164 (abstract no. PB0084). Unique Identifier : AIDSLINE ICA10/94369522 AB The performance characteristics of a dedicated CD4 counting system, FACSCount, were evaluated in populations from Shirati, Tanzania. Precision assessments involved 4 replicate stainings and analyses per subject. The pooled CV's of the parameters evaluated (CD4,8,3 and 4:8 ratio) are presented below: TABULAR DATA, SEE ABSTRACT VOLUME. Stability assessments involved 4 replicate analyses per subject, at time points 0, 24, 48 and 72 hours, of both unstained aliquots and aliquots stained at 0 hour. Aged blood testing revealed no significant differences between any time points. ANOVA aged stain testing revealed the following differences (p < 0.05): TABULAR DATA, SEE ABSTRACT VOLUME. CONCLUSION: FACSCount provides precise and stable stained and unstained results in the large majority of HIV- and HIV+ Tanzanian subjects tested. DE Antigens, CD3/*BLOOD Antigens, CD4/*BLOOD Antigens, CD8/*BLOOD CD4-CD8 Ratio *Developing Countries Human HIV Seronegativity/*IMMUNOLOGY HIV Seropositivity/CLASSIFICATION/DIAGNOSIS/*IMMUNOLOGY Leukocyte Count Reference Values Reproducibility of Results T-Lymphocyte Subsets/*IMMUNOLOGY Tanzania T4 Lymphocytes/IMMUNOLOGY MEETING ABSTRACT SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).