Development of up-converting phosphor technology-based lateral-flow assay for rapidly quantitative detection of hepatitis B surface antibody

• DOI: 10.1016/j.diagmicrobio.2008.10.020
• Publication Date: 2009-01-17T09:17:35Z
• Authors: Luping Li; Lei Zhou; Yang Yu; Ziwen Zhu; Changqing Lin; Changlong Lu; Ruifu Yang
• Keywords: Immunoassay; 0301 basic medicine; Hepatitis B Surface Antigens; Reproducibility of Results; Biosensing Techniques; Equipment Design; Hepatitis B; Sensitivity and Specificity; 3. Good health; 03 medical and health sciences; Humans; Regression Analysis; Hepatitis B Antibodies

An up-converting phosphor technology-based lateral-flow (UPT-LF) assay system was developed for rapid and quantitative detection of hepatitis B surface antibody (HBsAb). To evaluate its performance, we compared it with the Abbott Axsym AUSAB (ABBOTT Diagnostics Division, Wiesbaden, Germany) assay and conventional ELISA (Wantai Biological Pharmacy Enterprise, Beijing, China) using 13 standard positive sera and 306 clinical sera. In both laboratory evaluation and clinical application, UPT-LF assay showed the best sensitivity (99.19%) and detection agreement (97.43% for the adjusted agreement) with true results. The concordance rate between UPT-LF and ELISA, as shown by correlative regression analysis, was the highest (R(2)=0.6389), whereas that between UPT-LF and AUSAB was the lowest (R(2)=0.5702). In conclusion, UPT-LF assay for quantitative detection of HBsAb is sensitive and rapid, promising this new assay a bright future.