RDT Quiz A Q3

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RDT Quiz A Q2 Both microscopy and RDT tests can be used to diagnose malaria, and the two test types are often used together. However, the tests are not identical in their characteristics and have different strengths and weaknesses. When comparing microscopy and RDT tests for malaria which of the following statements are correct? (select all true statements) RDT gives superior species identification Microscopy is more sensitivity than RDT RDT provides a more rapid diagnosis RDT may be preferred in some settings RDT accurately assesses parasitaemia Explanation of correct answer (click "Expand") In ideal conditions a well-trained microscopist with experience in malaria, viewing a well-prepared thick blood film using a good quality microscope may detect with equal or better sensitivity than an RDT test. In less ideal conditions where equipment, staining quality, or microscopic experience is less good, then RDTs may have equivalent or superior sensitivity to microscopy (including many malarial endemic regions where microscopy may be unavailable or where the sensitivity of microscopy is limited by training, equipment or facilities). RDTs aso provide a more rapid turnaround time allowing emergency use and rapid decision-making. For species identification thin films are preferred to thick films or RTDS (including mixed infections), as they also allow more accurate identification of sepecies and the % of infected red-cells (for P.falciparum or P.knowlesi). Go to next question (4 of 5)