A 25- year- old man presented with fever, malaise, and a rash on his chest, arms, and feet. Which of the following will be most useful for a rapid diagnosis?
A) viral culture
B) microscopic examination of blood
C) bacterial culture
D) serological test for antigen
E) serological test for antibodies

Question

Quizplus · Accepted Answer

A serological test for antibodies would be most useful for a rapid diagnosis as it can detect the presence of specific antibodies produced in response to the pathogen causing the symptoms. This can help identify the type of infection and guide appropriate treatment. Viral or bacterial cultures may take longer and microscopic examination of blood may not be specific enough to diagnose the cause of the symptoms. Serological tests for antigen may not be sensitive enough to detect low levels of antigen in the early stages of infection.

A 25- Year- Old Man Presented with Fever, Malaise, and a Rash