Table 3. QFT-performance in patients with disease due to non tuberculous mycobacteria according to RD1 (n = 53).

Table 3a: Patients with NTM not sharing RD1	QFT-test Positive n(%)	QFT test Indeterminate n(%)	QFT-test Negative n(%)	Total
M. abscessus-chelonae	1 (50)	0	1 (50)	2
MAC	0	5 (15)	29 (85)	34
M. celatum	1 (20)	0	4 (80)	5
M. interjectum	0	0	1 (100)	1
M. malmoense	0	0	5 (100)	5
M. shimoidei	0	0	1 (100)	1
M. simiae	0	0	1 (100)	1
M. xenopi	0	0	1 (100)	1
TOTAL	2 (4)	5 (10)	43 (86)	50

Tables 3a and 3b show the results of the QFT in patients with definite NTM disease. The patients are divided in 2 groups according to the likely cross reaction with the RD1 antigenic region of M. tuberculosis.