Testing for Mycobacterium tuberculosis infection using the QuantiFERON-TB GOLD assay in patients with comorbid conditions in a tertiary care endemic setting

Table 2 Diagnostic details for patients with active TB

	N	AFBC	Microscopy	Radiology	ATT	Histo	PCR
QFT + ve
PTB	10	4	0	10	8	2	N/A -
EPTB	23	6	0	11	14	5	1
QFT -ve
PTB	3	1	1	2	3	0	1
EPTB	17	0	0	5	9	7	N/A

QFT QuantiFERON-Gold In Tube Assay, PTB Pulmonary TB, EPTB Extra-pulmonary TB, N Number of subjects, AFBC Acid fast bacilli culture by MIGIT system (Becton Dickinson, USA); Microscopy, acid fast bacillus smear using Ziehl Neelsen staining; Radiology, XRay/ CT scan/ or MRI; ATT, anti-tuberculosis treatment response; histo-pathological staining of biopsy material and or FNAC (fine needle aspirate cytology) where relevant. The numbers indicate those diagnosed as positive by each method. N/A, not available

ISSN: 2055-0936