2015
DOI: 10.1177/2325957415614645
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Utility of QuantiFERON-TB Gold In-Tube Test in the Diagnosis of Latent TB in HIV-Positive Patients in a Medium-TB Burden Country

Abstract: Background: The authors aimed to compare TST with QuantiFERON-TB Gold In-Tube (QFT) for detecting latent tuberculosis infection (LTBI) in HIV-infected patients in Iran as a TB-medium endemic country. Methods: In a cross-sectional design,130 HIVpositive patients in HIV clinic of Tehran University were studied. Patients screened for LTBI with QFT and TST simultaneously. Concordance between 2 tests results and variables associated with tests discordance were assessed. Results: Positive results found in 24.6% for … Show more

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Cited by 4 publications
(3 citation statements)
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References 34 publications
(52 reference statements)
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“…We found the results of the TST and QFT-Plus tests to be in poor agreement (0.225), which is similar to what others have found [31,[33][34][35][36][37][38]. The accuracy measures of the TST are often confounded by BCG vaccination and non-tuberculous mycobacterial (NTM) infections [39], [14].…”
Section: Discussionsupporting
confidence: 75%
“…We found the results of the TST and QFT-Plus tests to be in poor agreement (0.225), which is similar to what others have found [31,[33][34][35][36][37][38]. The accuracy measures of the TST are often confounded by BCG vaccination and non-tuberculous mycobacterial (NTM) infections [39], [14].…”
Section: Discussionsupporting
confidence: 75%
“…For example, the WHO and official estimates of the prevalence of TB in Saudi Arabia showed a decrease from 86 per 100,000 in 1990 to 55 per 100,000 in 2004 to 10.6 per 100,000 in 2015 compared to global average of 133 per 100,000 (Saudi Ministry of Health, 2015;Al-Hajoj et al, 2013). The observed significant difference in the prevalence of LTBI using TST and QFT-GIT has been reported in several studies (Balkhy et al, 2016;Al Wakeel et al, 2015;Khazraiyan et al, 2016). However, explaining such differences is difficult as both tests do not measure the same components of the immunologic response and the concordance was shown to be only fair to moderate (Ayubi et al, 2015).…”
Section: Discussionmentioning
confidence: 86%
“…The concordance between TST and QFTGIT was evaluated using a percentage of agreement and kappa (k) coefficient analysis. Strength of agreement was considered 'poor' for k 0.20, 'fair' for 0.20 < k 0.40, 'moderate' for 0.40 < k 0.60, 'good' for 0.60 < k 0.80, and 'excellent' for 0.80 < k 1.00 (Ramos et al, 2012;Khazraiyan et al, 2016). For analysis of the agreement, participants with indeterminate test results were excluded.…”
Section: Discussionmentioning
confidence: 99%