Unlabelled: Malaria is one of the most important parasitic diseases in humans affecting 103 countries worldwide.
Aims: The present study aims to determine the diagnostic utility of cell counter data--hemoglobin, total leukocyte count, platelet count and depolarized laser light (DLL)-based purple-coded events (PCEs) in detection of acute malaria. This is a retrospective study of 523 patient data that came for complete blood count for the first time.
Results: One hundred thirty-five of the 523 patients showed microscopic evidence of malaria. Platelet count showed the highest sensitivity of 77.77% (105/135). PCEs (> or = 1) showed 43.7% (59/135) sensitivity.
Conclusions: It is concluded that a low platelet count (< 150 x 109/L) is a good hematological parameter for presumptive diagnosis of malaria. If we change the cut-off for PCEs from > or = 1 to > or = 2, the sensitivity would be 56.29% (76/135) and the specificity would be 94.58% (367/388), respectively. The sensitivity of DLL was low, particularly with a low parasitic index (PI). The number of PCEs does not correlate with the PI. The cut-off number of PCEs in DLL-based malaria detection should be modified in highly endemic areas.
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