Evaluation of a rapid detection influenza virus a antigens kit using paired serum antibody test.
OBJECTIVE
To evaluate the feasibility for gold immunochromatographic assay (GICA) in rapid detection of influenza virus A infection.


METHODS
Seventy-three patients were enrolled. All patients contributed nasopharyngeal secretions and paired serum samples. Nasopharyngeal secretions was used for colloidal gold immunochromatographic rapid assay for influenza A virus immediately after the collection of specimen. Paired serum samples were used for the hemagglutination inhibition assay at the Centers for Disease Control and Prevention influenza network laboratory in Beijing.


RESULTS
Compare GICA test to hemagglutination inhibition (HI) assay, the Kappa value was 0.402 and the p value in the paired χ² test was higher than 0.05. Therefore, the difference was not statistically significant. The sensitivity of GICA was 50.0% and the specificity was 90.2%, and the negative predictive value was 90.2%.


CONCLUSIONS
The sensitivity for Influenza A antigen detection by using GICA is relatively low, the specificity is relatively satisfactory.
Department of Respiratory Medicine, The Military General Hospital of Beijing, PLA NO.5 Nanmencang, Dongcheng District, Beijing 100700, China. hw-chen@hotmail.com
Hangwei
H
Chen
Huimin
H
Wang
Xuehui
X
Li
Lanhua
L
You
Juan
J
Wei
Weixian
W
Shi
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000956:Antigens, Viral / Q000097:blood*; D002846:Chromatography, Affinity / Q000379:methods*; D005260:Female; D017979:Gold Colloid; D006801:Humans; D009980:Influenza A virus / Q000276:immunology*; D007251:Influenza, Human / Q000175:diagnosis* / Q000276:immunology; D008297:Male; D008875:Middle Aged; D011933:Reagent Kits, Diagnostic; D012680:Sensitivity and Specificity
D000956:Antigens, Viral; D017979:Gold Colloid; D011933:Reagent Kits, Diagnostic