Evolve Infectious Diseases Practice Test

Malaria is typically diagnosed in clinical practice through the use of blood smears and rapid diagnostic tests. These methods are effective in identifying the presence of Plasmodium parasites, which are responsible for malaria, in the bloodstream.

A blood smear involves taking a sample of blood and examining it under a microscope. This allows for the direct visualization of the malaria parasites, as well as an assessment of the stage of infection by observing the specific morphology of the parasites. The thick and thin blood films provide an important diagnostic tool to not only confirm the diagnosis but also to determine the species of malaria, which can influence treatment options.

Rapid diagnostic tests (RDTs) are a more recent advancement that allows for quicker diagnosis. These tests detect specific antigens produced by the malaria parasite, providing results in a matter of minutes. RDTs are particularly valuable in settings where access to microscopy may be limited.

In contrast, methods like a white blood cell count, urine analysis, or a computed tomography scan do not specifically diagnose malaria. A white blood cell count may show elevated levels due to infection but lacks specificity for malaria. Urine analysis is generally used for diagnosing urinary tract infections or other renal conditions. Finally, a CT scan is not a diagnostic tool for malaria