Usefulness of interferon-γ release assay for the diagnosis of sputum smear-negative pulmonary and extra-pulmonary TB in Zhejiang Province, China

Table 4 Specificity comparison of different methods

Methods	Other pulmonary diseases, n = 81		Healthy controls, n = 100		Total, n = 181
	P	S (%)	P	S (%)	P	S (%)
TB-IGRA	13	83.9	8	92.0	21	88.4
TB-Ab	11	86.4	7	93.0	18	90.1

ISSN: 2049-9957