title: Comparison of the Luminex xTAG RVP Fast assay and the Idaho Technology FilmArray RP assay for detection of respiratory viruses in pediatric patients at a cancer hospital.
abstract: Respiratory viruses are increasingly recognized as serious causes of morbidity and mortality in immunocompromised patients. The rapid and sensitive detection of respiratory viruses is essential for the early diagnosis and administration of appropriate antiviral therapy, as well as for the effective implementation of infection control measures. We compared the performance of two commercial assays, xTAG RVP Fast (Luminex Diagnostics, Toronto, Canada) and FilmArray RVP (FA RVP; Idaho Technology, Salt Lake City, UT), in pediatric patients at Memorial Sloan-Kettering Cancer Center. These assays detect the following viruses: respiratory syncytial virus; influenza A and B viruses; parainfluenza viruses 1, 2, 3, and 4; human metapneumovirus; adenovirus; enterovirus-rhinovirus; coronaviruses NL63, HKU1, 229E, and OC43; and bocavirus. We tested a total of 358 respiratory specimens from 173 pediatric patients previously tested by direct fluorescence assay (DFA) and viral culture. The overall detection rate (number of positive specimens/total specimens) for viruses tested by all methods was 24% for DFA/culture, 45% for xTAG RVP Fast, and 51% for FA RVP. The agreement between the two multiplex assays was 84.5%, and the difference in detection rate was statistically significant (P < 0.0001). Overall, the FA RVP assay was more sensitive than the xTAG RVP Fast assay and had a turnaround time of approximately 1 h. The sensitivity, simplicity, and random-access platform make FA RVP an excellent choice for laboratory on-demand service with low to medium volume.
authors.affiliation: Clinical Microbiology Service, Department of Laboratory Medicine, Memorial Sloan-Kettering Cancer Center, New York, New York, USA. babadyn@mskcc.org
authors.forename: N Esther
authors.initials: NE
authors.lastname: Babady
authors.forename: Peter
authors.initials: P
authors.lastname: Mead
authors.forename: Jeffrey
authors.initials: J
authors.lastname: Stiles
authors.forename: Carrie
authors.initials: C
authors.lastname: Brennan
authors.forename: Haijing
authors.initials: H
authors.lastname: Li
authors.forename: Susan
authors.initials: S
authors.lastname: Shuptar
authors.forename: Charles W
authors.initials: CW
authors.lastname: Stratton
authors.forename: Yi-Wei
authors.initials: YW
authors.lastname: Tang
authors.forename: Mini
authors.initials: M
authors.lastname: Kamboj
mesh_terms: D000293:Adolescent; D002173:Cancer Care Facilities; D002648:Child; D002675:Child, Preschool; D019411:Clinical Laboratory Techniques / Q000379:methods*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D025202:Molecular Diagnostic Techniques / Q000379:methods*; D009369:Neoplasms / Q000150:complications; D012141:Respiratory Tract Infections / Q000175:diagnosis / Q000821:virology*; D012680:Sensitivity and Specificity; D014773:Virology / Q000379:methods*; D014777:Virus Diseases / Q000175:diagnosis / Q000821:virology*; D014780:Viruses / Q000145:classification / Q000302:isolation & purification*; D055815:Young Adult