Table 5.

Head-to-head comparison of different TB diagnostic tests, including Xpert Ultra and the MPT64 test among TB cases¹

	All TB cases n = 31
	MPT64 test performed		Microscopy performed		1-step PCR performed		Nested-PCR performed		Culture performed
	n = 31		n = 27		n = 18		n = 11		n = 26
	MPT64 test +	MPT64 test -	Micro-scopy +	Micro-scopy -	1-step PCR+	1-step PCR-	Nested-PCR+	Nested-PCR-	Culture +	Culture -
	n = 10	n = 21	n = 6	n = 21	n = 6	n = 12	n = 7	n = 4	n = 16	n = 10
Microscopy +	2	4
Microscopy -	4	17
1-step PCR +	4	2	4	2
1-step PCR -	2	10	2	9
Nested-PCR +	5	2	1	3	1	0
Nested-PCR -	0	4	0	4	0	1
Culture +	3	13	4	12	5	7	2	2
Culture -	3	7	2	7	1	5	0	2
Xpert Ultra +	2	2	2	2	3	0	1	1	4	0
Xpert Ultra -	0	3	0	3	0	1	0	1	1	2

Abbreviations: TB, tuberculosis; PCR, polymerase chain reaction

¹TB cases include both microbiologically confirmed TB cases (n = 26) and clinically diagnosed TB cases (n = 5)