Table 3. Performance of Xpert MTB/RIF and non-molecular methods against composite culture for the diagnosis of presumptive TBLN patients.

Laboratory methods	Sensitivity (95%CI)	Specificity (95%CI)	PPV (95%CI)	NPV (95%CI)
Cytology	94.1%(91.5–96.5)	53.6%(48.4–58.8)	62.1%(57.1–67.1)	91.8%(89–94.6)
Xpert MTB/RIF	78%(73.7–82.3)	74%(69.4–78.6)	71%(66.3–75.7)	81%(76.9–85.1)
ZN	30.9%(26–35.7)	98.8%(97.8–99.8)	95.5%(93.5–97.5)	63.8%(58.8–68.8)
FM	47%(941.8–52.2)	94%(91.5–96.5)	86.5%(83–90)	68.7%(63.9–73.5)