TLC Sensitivity (%) Specificity (%) PPV (%) NPV (%)
800 13.6 100 100 45.5
900 15.9 99.2 96.6 46
1000 21 99.2 97.4 47.5
1100 25 98.4 95.7 48.6
1200 33 97.6 95.1 51.2
1300 41.5 96.9 94.8 54.4
1400 51.7 96.1 94.8 58.9
1500 64.8 92.1 91.9 65.4
1600 68.2 86.6 97.6 66.3
1700 74.4 82.7 85.6 70
1800 75 77 82.5 69.2
1900 81.8 70.9 79.6 73.8
2000 84.7 65.4 77.2 75.5
Table 2: Combine Sensitivity, Specificity, Positive Predictive Value (PPV) And Negative Predictive Value (NPV) Of TLC Counts for Absolute CD4+ T Cell Count <350 Cells/mm3.