TITLE

Utility of QuantiFERON TB gold test in a south Indian patient population of ocular inflammation

AUTHOR(S)
Babu, Kalpana; Satish, Vidya; Satish, S.; SubbaKrishna, D. K.; Abraham, Mariamma Philips; Murthy, Krishna R.
PUB. DATE
December 2009
SOURCE
Indian Journal of Ophthalmology;Dec2009, Vol. 57 Issue 6, p427
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Aim: To study the utility of interferon-γ release assays (QuantiFERON TB gold test) in a south Indian patient population of intraocular inflammation. Design: Evaluation of a diagnostic test- a pilot study from January 2007 to October 2008. Materials and Methods: QuantiFERON TB gold test was performed on the following groups of patients following an informed consent. Group A included healthy volunteers without any exposure to tuberculosis (TB) or past history of TB (n=22). Group B included patients with active systemic TB diagnosed by the demonstration of acid-fast bacilli or by the histopathology finding of caseation with granuloma formation from the sputum, lymph node, skin or intestinal biopsies (n=26). Group C included patients with uveitis of known etiologies other than intraocular TB without any history of exposure to active TB (n=21). Group D included patients with a diagnosis of presumed intraocular TB, who responded to antitubercular therapy by decreased or no recurrences following treatment and with a minimum of nine months follow-up following initiation of antitubercular therapy (n=39). Results: The sensitivity and specificity of the QuantiFERON TB gold test to pick up active systemic TB was 58% and 77% respectively. The sensitivity and specificity of the QuantiFERON TB gold test to pickup intraocular TB was 82% and 76% respectively. Conclusions: QuantiFERON TB gold test alone may not be specific for intraocular TB. The significance of this test in a case scenario needs to be interpreted with clinical presentation and other evidences for intraocular TB.
ACCESSION #
45024458

 

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