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Journal of Clinical Microbiology, May 2008, p. 1724-1727, Vol. 46, No. 5
0095-1137/08/$08.00+0     doi:10.1128/JCM.01947-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.

Evaluation of the NanoChip 400 System for Detection of Influenza A and B, Respiratory Syncytial, and Parainfluenza Viruses{triangledown}

Hiroshi Takahashi,1* Sylvia A. Norman,4 Elizabeth L. Mather,4 and Bruce K. Patterson1,2,3

Clinical Laboratories,1 Department of Pathology, Stanford University Medical Center,2 Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, California,3 Nanogen, Inc., San Diego, California4

Received 2 October 2007/ Returned for modification 9 November 2007/ Accepted 23 February 2008

The NanoChip400 system uses multiplex PCR chemistry and electronic microarray detection of influenza A and B viruses; respiratory syncytial viruses A and B; and human parainfluenza virus types 1, 2, and 3. The results obtained with the NanoChip 400 system were compared with those obtained by direct fluorescent-antibody staining (DFA) and real-time PCR with 122 and 130 specimens, respectively. Concordance between DFA and NanoChip 400 system was obtained for 106 of 122 (86.9%) specimens. On the basis of discrepancy analysis with specimens available for confirmatory real-time PCR testing, the sensitivity and specificity of the NanoChip 400 were 98.6% and 100%, respectively. With respect to specimens previously tested by real-time PCR, the NanoChip 400 system demonstrated a sensitivity of 91.1% and a specificity of 100%. The NanoChip 400 system provides clinical laboratories with a practical, rapid, and sensitive method for the detection of common respiratory viruses.

* Corresponding author. Mailing address: Clinical Laboratories, Stanford Medical Center, 3375 Hillview Ave., Palo Alto, CA 94304. Phone: (650) 725-7153. Fax: (650) 736-9856. E-mail: htakahashi{at}stanfordmed.org

{triangledown} Published ahead of print on 5 March 2008.

Journal of Clinical Microbiology, May 2008, p. 1724-1727, Vol. 46, No. 5
0095-1137/08/$08.00+0     doi:10.1128/JCM.01947-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.





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