Collaborative study for the characterization of a chikungunya virus RNA reference reagent for use in nucleic acid testing
Autor(es): Añez G, Jiang Z, Heisey D A R, Kerby S, Rios M
Resumo: Infections with the mosquito-borne chikungunya virus (CHIKV) can cause febrile illness or be asymptomatic. Laboratory diagnosis of CHIKV is often made with laboratory-developed nucleic acid amplification technology (NAT) assays because there are no U.S. Food - Drug Administration (FDA)-approved diagnostic or blood screening assays. We aimed to produce a well-characterized CHIKV RNA reference reagent (CHIKV-RR) for use in NAT assays. A CHIKV RNA-RR consisting of cell culture-grown, heat-inactivated CHIKV diluted in human plasma was assessed by 8 laboratories in a collaborative study. The participants were asked to test the CHIKV-RR using their NAT assay(s) by qualitative testing (determination of RNA end-point by testing log - half-log dilutions followed by calculation of estimated NAT-detectable units/ml, after adjustment for the sample volume used for testing), - by quantitative testing, when available. Results from the testing showed that the CHIKV-RR had an estimated overall mean of 7.56 log10 detectable units/ml, ranging from 6.2 log10 to 8.6 log10. The Center for Biologics for Evaluation - Research/FDA CHIKV RNA-RR for NAT was established with a concentration of 7.56 log10 detectable units/ml.
Palavras-Chave: Chikungunya virus; Nucleic acid amplification tests; Reference standards
Imprenta: Vox Sanguinis, v. 109, n. 4, p. 312-318, 2015
Identificador do objeto digital: 10.1111/vox.12297
Descritores: Chikungunya virus - Cell ; Chikungunya virus - RNA ; Chikungunya Virus - Virus ; Chikungunya virus - Epidemiology
Data de publicação: 2015
