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Cost analysis of smear microscopy and the Xpert assay for tuberculosis diagnosis: average turnaround time
Figueredo, Lida Jouca de Assis; Miranda, Silvana Spíndola de; Santos, Lucas Benício dos; Manso, Caroline Gontijo Gonçalves; Soares, Valéria Martins; Alves, Suely; Vater, Maria Cláudia; Kritski, Afrânio Lineu; Carvalho, Wânia da Silva; Pádua, Cristiane Menezes de; Almeida, Isabela Neves de.
  • Figueredo, Lida Jouca de Assis; Universidade Federal de Minas Gerais. Laboratório de Pesquisa em Micobactérias. Belo Horizonte. BR
  • Miranda, Silvana Spíndola de; Universidade Federal de Minas Gerais. Faculdade de Medicina. Grupo de Pesquisa em Micobacterioses. Belo Horizonte. BR
  • Santos, Lucas Benício dos; Universidade Federal de Minas Gerais. Laboratório de Pesquisa em Micobactérias. Belo Horizonte. BR
  • Manso, Caroline Gontijo Gonçalves; Universidade Federal de Minas Gerais. Laboratório de Pesquisa em Micobactérias. Belo Horizonte. BR
  • Soares, Valéria Martins; Fundação Hospitalar do Estado de Minas Gerais. Hospital Júlia Kubistchek. Laboratório de Microbiologia. Belo Horizonte. BR
  • Alves, Suely; Universidade Federal do Rio de Janeiro. Programa Acadêmico de Tuberculose. Rio de Janeiro. BR
  • Vater, Maria Cláudia; Universidade Federal do Rio de Janeiro. Programa Acadêmico de Tuberculose. Rio de Janeiro. BR
  • Kritski, Afrânio Lineu; Universidade Federal do Rio de Janeiro. Programa Acadêmico de Tuberculose. Rio de Janeiro. BR
  • Carvalho, Wânia da Silva; Universidade Federal de Minas Gerais. Faculdade de Farmácia. Belo Horizonte. BR
  • Pádua, Cristiane Menezes de; Universidade Federal de Minas Gerais. Faculdade de Farmácia. Belo Horizonte. BR
  • Almeida, Isabela Neves de; Universidade Federal de Minas Gerais. Laboratório de Pesquisa em Micobactérias. Belo Horizonte. BR
Rev. Soc. Bras. Med. Trop ; 53: e20200314, 2020. tab, graf
Article in English | SES-SP, ColecionaSUS, LILACS | ID: biblio-1136805
ABSTRACT
Abstract

INTRODUCTION:

Rapid and accurate tuberculosis detection is critical for improving patient diagnosis and decreasing tuberculosis transmission. Molecular assays can significantly increase laboratory costs; therefore, the average time and economic impact should be evaluated before implementing a new technology. The aim of this study was to evaluate the cost and average turnaround time of smear microscopy and Xpert assay at a university hospital.

METHODS:

The turnaround time and cost of the laboratory diagnosis of tuberculosis were calculated based on the mean cost and activity based costing (ABC).

RESULTS:

The average turnaround time for smear microscopy was 16.6 hours while that for Xpert was 24.1 hours. The Xpert had a mean cost of USD 17.37 with an ABC of USD 10.86, while smear microscopy had a mean cost of USD 13.31 with an ABC of USD 6.01. The sensitivity of smear microscopy was 42.9% and its specificity was 99.1%, while the Xpert assay had a sensitivity of 100% and a specificity of 96.7%.

CONCLUSIONS:

The Xpert assay has high accuracy; however, the turnaround time and cost of smear microscopy were lower than those of Xpert.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Tuberculosis, Pulmonary / Biological Assay / Pathology, Molecular Type of study: Diagnostic study / Health economic evaluation Limits: Humans Language: English Journal: Rev. Soc. Bras. Med. Trop Year: 2020 Type: Article Institution/Affiliation country: Fundação Hospitalar do Estado de Minas Gerais/BR / Universidade Federal de Minas Gerais/BR / Universidade Federal do Rio de Janeiro/BR

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Full text: Available Index: LILACS (Americas) Main subject: Tuberculosis, Pulmonary / Biological Assay / Pathology, Molecular Type of study: Diagnostic study / Health economic evaluation Limits: Humans Language: English Journal: Rev. Soc. Bras. Med. Trop Year: 2020 Type: Article Institution/Affiliation country: Fundação Hospitalar do Estado de Minas Gerais/BR / Universidade Federal de Minas Gerais/BR / Universidade Federal do Rio de Janeiro/BR