Table 3.

Analysis of discrepant results among the MTD assay, Xpert MTB/RIF assay, and culture

Specimen type	Resulta				Clinical diagnosisb
	Xpert MTB/RIF	MTD	Smear	Culture
Sputum	Pos	Neg	Neg	Pos	Active TB
Sputum	Pos	Pos	Pos	Neg	Active TB
Sputum	Pos	Equivocal	Pos	Neg	Active TB
Sputum	Pos	Pos	Pos	Neg	Active TB
Sputum	Pos	Equivocal	Neg	Neg	Active TB
Sputum	Pos	Neg	Neg	Neg	No TB
Sputum	Neg	Pos	Neg	Pos	Active TB
Sputum	Neg	Pos	Neg	Pos	Active TB
Sputum	Neg	Pos	Neg	Pos	Active TB
Sputum	Neg	Equivocal	Neg	Pos	Active TB
Sputum	Neg	Neg	Neg	Pos	Active TB
Sputum	Neg	Pos	Neg	Pos	Active TB
Sputum	Invalid	Pos	Neg	Neg	No TB
BAL	Neg	Pos	Neg	Neg	Active TB
BAL	Neg	Pos	Neg	Neg	No TB
CSF	Neg	Equivocal	Neg	Pos	Active TB
CSF	Neg	Pos	Neg	Neg	No TB
Biopsy	Pos	Pos	Pos	Neg	BCG lymphadenitis
Biopsy	Pos	Pos	Pos	Neg	Active TB
Biopsy	Pos	Pos	Pos	Neg	Active TB
Biopsy	Pos	Pos	Neg	Neg	Active TB

^aAbbreviations: Pos, positive; Neg, negative.

^bClinical diagnosis was based on patient symptoms, chest X-rays, and use of anti-TB treatment.