RBC count and RBC indices

Cut-off

Sensitivity

Specificity

Positive predictive value (PPV)

Negative predictive value (NPV)

Area under the curve (AUC)

HTC%

>34

43.2%

70%

80%

30.8%

0.542

MCV fl

<74

55.8%

42.5%

73%

45%

0.541

RDW%

>13.8

51.4%

57.5%

77%

48.2%

0.542

RBC ×10⁶/µl

>4.48

58.6%

50%

76.5%

40.3%

0.591

Hb g/dl

>11.4

48.2%

52.5%

74.1%

36.9%

0.501