Diagnosis of Latent Tuberculosis Infection in Candidates for Kidney Transplantation (Comparison of Two Tests)

It is assumed that about 10% of individuals infected with Mycobacterium tuberculosis develop tuberculosis. The rate of tuberculosis in solid organ transplant recipients has been estimated to be 50-fold higher than in the general population. Candidates for solid organ transplantation are routinely sc...

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Main Authors: Gordafarin Nikbakht, Sepideh Safy, Farid Azmoudeh Ardalan, Zahra Ahmadinejad
Format: Article
Language:English
Published: Tehran University of Medical Sciences 2012-05-01
Series:Acta Medica Iranica
Subjects:
Online Access:http://journals.tums.ac.ir/PdfMed.aspx?pdf_med=/upload_files/pdf/20918.pdf&manuscript_id=20918
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author Gordafarin Nikbakht
Sepideh Safy
Farid Azmoudeh Ardalan
Zahra Ahmadinejad
author_facet Gordafarin Nikbakht
Sepideh Safy
Farid Azmoudeh Ardalan
Zahra Ahmadinejad
author_sort Gordafarin Nikbakht
collection DOAJ
description It is assumed that about 10% of individuals infected with Mycobacterium tuberculosis develop tuberculosis. The rate of tuberculosis in solid organ transplant recipients has been estimated to be 50-fold higher than in the general population. Candidates for solid organ transplantation are routinely screened for latent tuberculosis infection (LTBI). In this study we aimed to compare Tuberculin Skin Test (TST) with QuantiFERON-TB Gold In-Tube (QFT) for the detection of LTBI in candidate for kidney transplantation. Between October 2009 and November 2010, 64 candidates for kidney transplant who referred to the transplant clinic in Imam Khomeini Hospital, were enrolled in the study. Patients were screened for LTBI with both QFT and TST. Concordance between two test results and variables associated with test discordance were assessed. The mean age of patients was 38.5 years (range 16-65); female/male ratio was 26/38. Positive results were found in 21.9% and 21.9%, by TST and QFT, respectively. Four patients (6.3%) had indeterminate QFT. Overall agreement between QFT and TST was 75% (k=0.28 and P=0.028). BCG vaccination and past positive TST were not associated with positive QFT result (P=0.13 and P=0.09 respectively). Overall agreement between test results was fair. Comparison among test results showed that TST andQFT can be used interchangeably for latent TB screening in kidney transplant candidates. The decision to select QFT or TST will depend on the purpose of testing and resource availability.
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spelling doaj.art-2c8ba2d657c34628a69925f60f1fb7b82022-12-21T23:04:53ZengTehran University of Medical SciencesActa Medica Iranica0044-60250173-59692012-05-01505305310Diagnosis of Latent Tuberculosis Infection in Candidates for Kidney Transplantation (Comparison of Two Tests)Gordafarin NikbakhtSepideh SafyFarid Azmoudeh ArdalanZahra AhmadinejadIt is assumed that about 10% of individuals infected with Mycobacterium tuberculosis develop tuberculosis. The rate of tuberculosis in solid organ transplant recipients has been estimated to be 50-fold higher than in the general population. Candidates for solid organ transplantation are routinely screened for latent tuberculosis infection (LTBI). In this study we aimed to compare Tuberculin Skin Test (TST) with QuantiFERON-TB Gold In-Tube (QFT) for the detection of LTBI in candidate for kidney transplantation. Between October 2009 and November 2010, 64 candidates for kidney transplant who referred to the transplant clinic in Imam Khomeini Hospital, were enrolled in the study. Patients were screened for LTBI with both QFT and TST. Concordance between two test results and variables associated with test discordance were assessed. The mean age of patients was 38.5 years (range 16-65); female/male ratio was 26/38. Positive results were found in 21.9% and 21.9%, by TST and QFT, respectively. Four patients (6.3%) had indeterminate QFT. Overall agreement between QFT and TST was 75% (k=0.28 and P=0.028). BCG vaccination and past positive TST were not associated with positive QFT result (P=0.13 and P=0.09 respectively). Overall agreement between test results was fair. Comparison among test results showed that TST andQFT can be used interchangeably for latent TB screening in kidney transplant candidates. The decision to select QFT or TST will depend on the purpose of testing and resource availability.http://journals.tums.ac.ir/PdfMed.aspx?pdf_med=/upload_files/pdf/20918.pdf&manuscript_id=20918Kidney TransplantationLatent Tuberculosis InfectionTuberculin Skin TestQuanti FERON-TB Gold in-Tube
spellingShingle Gordafarin Nikbakht
Sepideh Safy
Farid Azmoudeh Ardalan
Zahra Ahmadinejad
Diagnosis of Latent Tuberculosis Infection in Candidates for Kidney Transplantation (Comparison of Two Tests)
Acta Medica Iranica
Kidney Transplantation
Latent Tuberculosis Infection
Tuberculin Skin Test
Quanti FERON-TB Gold in-Tube
title Diagnosis of Latent Tuberculosis Infection in Candidates for Kidney Transplantation (Comparison of Two Tests)
title_full Diagnosis of Latent Tuberculosis Infection in Candidates for Kidney Transplantation (Comparison of Two Tests)
title_fullStr Diagnosis of Latent Tuberculosis Infection in Candidates for Kidney Transplantation (Comparison of Two Tests)
title_full_unstemmed Diagnosis of Latent Tuberculosis Infection in Candidates for Kidney Transplantation (Comparison of Two Tests)
title_short Diagnosis of Latent Tuberculosis Infection in Candidates for Kidney Transplantation (Comparison of Two Tests)
title_sort diagnosis of latent tuberculosis infection in candidates for kidney transplantation comparison of two tests
topic Kidney Transplantation
Latent Tuberculosis Infection
Tuberculin Skin Test
Quanti FERON-TB Gold in-Tube
url http://journals.tums.ac.ir/PdfMed.aspx?pdf_med=/upload_files/pdf/20918.pdf&manuscript_id=20918
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AT faridazmoudehardalan diagnosisoflatenttuberculosisinfectionincandidatesforkidneytransplantationcomparisonoftwotests
AT zahraahmadinejad diagnosisoflatenttuberculosisinfectionincandidatesforkidneytransplantationcomparisonoftwotests