Rapid Immunological Assays for Group a Streptococcus Pyogenes Antigen Have

question 30

Multiple Choice

Rapid immunological assays for Group A Streptococcus pyogenes antigen have a sensitivity of about 60% to 80% and a specificity of about 90% to 95% in pharyngitis infections. Given these data, which strategy below is optimal?

• A)Do preliminary screening with a throat culture and follow up negative results with a rapid antigen test.
• B)Do preliminary screening with a rapid antigen test and follow up negative results with a throat culture.
• C)Do preliminary screening with a rapid antigen test and follow up positive results with a throat culture.
• D)Do preliminary screening with a throat culture and follow up positive results with a rapid antigen test.
• E)Simultaneously test all specimens with both rapid antigen screening and culture.

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