Genotype®MTBDRplus and Xpert®MTB/RIF in the diagnosis of tuberculosis and resistant tuberculosis: cost analysis in a tertiary referral hospital

Abstract INTRODUCTION: The present study sought to assess the mean and activity based cost (ABC) of the laboratory diagnosis for tuberculosis through the application of conventional and molecular techniques-Xpert®MTB/RIF and Genotype®MTBDRplus-in a tertiary referral hospital in Brazil. METHODS: The mean cost and ABC formed the basis for the cost analysis of the TB laboratory diagnosis. RESULTS: The mean cost and ABC were US$ 4.00 and US$ 3.24, respectively, for a bacilloscopy; US$ 6.73 and US$ 5.27 for a Lowenstein-Jensen (LJ) culture; US$ 105.42 and US$ 76.56 for a drug sensitivity test (DST)-proportions method (PM) in LJ; US$ 148.45 and US$ 136.80 for a DST-BACTECTM MGITTM 960 system; US$ 11.53 and US$ 9.89 for an Xpert®MTB/RIF; and US$ 84.21 and US$ 48.38 for a Genotype®MTBDRplus. CONCLUSIONS: The mean cost and ABC proved to be good decision-making parameters in the diagnosis of TB and MDR-TB. The effective implementation of algorithms will depend on the conditions at each location.

Análisis de costos de los métodos rápidos para diagnóstico de Tuberculosis multidrogorresistente en diferentes grupos epidemiológicos del Perú / Cost analysis of rapid methods for diagnosis of multidrug resistant Tuberculosis in different epidemiologic groups in Perú

Objetivos. Evaluar los costos de tres métodos diagnósticos para susceptibilidad a drogas antituberculosas y comparar el costo por caso de tuberculosis multidrogorresistente (TB MDR) diagnosticado con estos (MODS; GRIESS y Genotype MTBDR plus ® en cuatro grupos epidemiológicos en el Perú. Materiales y métodos. En base a cifras programáticas, se dividió a la población en cuatro grupos: pacientes nuevos de Lima/Callao; nuevos de otras provincias; los antes tratados de Lima/Callao y de otras provincias. Se calcularon los costos de cada prueba en base a la metodología estándar utilizada por el Ministerio de Salud, desde la perspectiva de los servicios de salud. Basado en ello, se calculó el costo por paciente TB MDR diagnosticado para cada grupo epidemiológico. Resultados. Los costos estimados por prueba para MODS, GRIESS, y Genotype MTBDR plus ® fueron de 14,83; 15,51 y 176,41 nuevos soles, respectivamente. El costo por paciente TB MDR diagnosticado con GRIESS y MODS fue menor a los 200 nuevos soles en tres de los cuatro grupos. El costo por TB MDR diagnosticado fue de más de 2000 nuevos soles con el Genotype MTBDR plus ® en los dos grupos de pacientes nuevos y, menores a 1000 nuevos soles en los grupos de pacientes antes tratados. Conclusiones. En grupos de alta prevalencia, como son los pacientes antes tratados, los costos por caso diagnosticado de TB MDR con las tres pruebas evaluadas fueron bajos, sin embargo, con la prueba molecular en los grupos de baja prevalencia, fueron elevados. El uso de las pruebas moleculares debe optimizarse en grupos de altas prevalencias.

Objectives.To evaluate the costs of three methods for the diagnosis of drug susceptibility in tuberculosis, and to compare the cost per case of Multidrug-resistant tuberculosis (MDR TB) diagnosed with these (MODS, GRIESS and Genotype MTBDR plus ® in 4 epidemiologic groups in Peru. Materials and methods.In the basis of programmatic figures, we divided the population in 4 groups: new cases from Lima/Callao, new cases from other provinces, previously treated patients from Lima/Callao and previously treated from other provinces. We calculated the costs of each test with the standard methodology of the Ministry of Health, from the perspective of the health system. Finally, we calculated the cost per patient diagnosed with MDR TB for each epidemiologic group. Results. The estimated costs per test for MODS, GRIESS, and Genotype MTBDR plus® were 14.83. 15.51 and 176.41 nuevos soles respectively (the local currency, 1 nuevos sol=0.36 US dollars for August, 2011). The cost per patient diagnosed with GRIESS and MODS was lower than 200 nuevos soles in 3 out of the 4 groups. The costs per diagnosed MDR TB were higher than 2,000 nuevos soles with Genotype MTBDR plus ® in the two groups of new patients, and lower than 1,000 nuevos soles in the group of previously treated patients. Conclusions. In high-prevalence groups, like the previously treated patients, the costs per diagnosis of MDR TB with the 3 evaluated tests were low, nevertheless, the costs with the molecular test in the low- prevalence groups were high. The use of the molecular tests must be optimized in high prevalence areas.

Epidemiological and cost analysis of multidrug-resistant tuberculosis in Oman

We conducted an epidemiological and cost analysis for all 13 patients diagnosed with multaidrug-resistant tuberculosis [11 pulmonary, 2 extrapulmonary] in Oman from January 2000 to October 2005. The disease was secondary, or acquired, in 12 of 13 patients. A total of 140 contacts were screened [mean 10.8 persons per patient], but contact tracing revealed no secondary cases. The mean number of drugs that TB isolates were resistant to was 2.8 [range 2-5]. A mean of 4.7 drugs were given to patients, the mean length of therapy was 8 months and all patients were cured. The cost of medications for these multidrug-resistant cases was 14 to 29 times higher than that for the standard drug-sensitive TB regimen

Cost analysis of different types of tuberculosis patient at tuberculosis centers in Thailand.

Tuberculosis (TB) has recently re-emerged as a major public health problem in Thailand. As a consequence of the HIV epidemic in the country, the TB burden has been rising in terms of both morbidity, and mortality which have tremendous socioeconomic impact. However, a study of the cost of various anti-TB drugs in Thailand has never been conducted. A specific aim of this study was to compare the total provider costs of delivering services to different types of TB patient in four zonal TB centers located in the east, northeast, north, and south of Thailand. This aim was accomplished by calculating the unit costs of TB treatment services at these TB centers during the year 1996-1997. All units of the zonal TB centers were classified into 5 cost-center categories: treatment units, laboratory units, radiology units, pharmaceutical units, and administrative/supportive units. The results showed that the average total provider cost of multidrug resistant TB (MDR TB) patients was 89,735.49 baht which was the highest of any type of patient and was 17 times higher than the cost of smear-negative TB cases; this finding was attributed to the high cost of anti-TB drugs for MDR TB cases (65,870 baht), some 95 times higher than the cost for smear-negative cases. Total provider costs were highest in the northeastern region TB centers and lowest in the southern centers for every type of TB patient: smear-negative TB cases (7.727 baht vs 3.916 baht). newly smear positive TB cases (12,539 baht vs 7.020 baht), TB with AIDS cases (15,108 baht vs 8,369 baht). re-treatment TB cases (16,679 baht vs 9,696 baht), and MDR TB cases (102.330 baht vs 82,933 baht). The information from this study may be useful when reviewing the role, function, and cost structure of each TB center in Thailand in order to establish a strategic plan for effective TB control.