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Xpert Ultra

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Questions and Answers

Which test is recommended by WHO for confirmation of diagnosis and rifampicin resistance?

Xpert Ultra (correct)

Sputum smear microscopy

GeneXpert

Tuberculosis culture test

What is the specificity of Xpert Ultra for the diagnosis of active TB in patients with recurrent TB?

90%

85%

95%

80% (correct)

Why is the specificity of Xpert Ultra reduced in patients with previously treated TB?

Due to a technical error in the test

Due to patient non-compliance

Due to a mutation in the TB bacteria

Due to the presence of dead tuberculous bacilli (correct)

For patients with suspected recurrent TB who completed TB treatment >5 years, what recommendation did WHO give for Xpert Ultra?

<p>Strong recommendation (B)</p> Signup and view all the answers

For patients with suspected recurrent TB who completed TB treatment within the past 5 years, what recommendation did WHO give for Xpert Ultra?

<p>Weak recommendation (C)</p> Signup and view all the answers