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Abstract
ObjectiveTo investigate the diagnostic value of peripheral blood lymphocyte testing in children with infectious mononucleosis (IM).MethodsA total of 135 children with IM as the IM group and 100 healthy volunteers as the healthy group were included in this retrospective study. Peripheral blood lymphocyte subsets marked as CD3+, CD4+, CD8+, CD16 + CD56+, and CD19 + in the peripheral blood were quantified using flow cytometry. Statistical analysis was performed using the chi-square test, Kruskal-Wallis test, AUROC curve, and Kappa consistency test to assess the diagnostic value of these markers in IM.ResultsThe AUROC curve for CD8 + cells and for CD4+/CD8 + ratios both achieved a value of 1 with the sensitivity and specificity of 100% (P<0.001). The Kappa coefficients were 1 for CD8+, CD4+/CD8 + ratios and the combined EBV analysis, indicating a 100% consistency with the clinical diagnosis. Significant differences were also observed in the CD3+, CD4+, CD16 + CD56+, and CD19 + lymphocyte subsets between the IM group and the healthy group (P<0.05).ConclusionThe evaluation of CD8 + and CD4+/CD8 + ratios in peripheral blood lymphocytes represents a significant advancement in the diagnosis of IM. Peripheral blood lymphocyte testing offers a reliable, sensitive, and specific diagnostic tool to enhance the clinical management of children with IM.
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