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A CCD-Based Reader Combined Quantum Dots-Labeled Lateral Flow Strips for Ultrasensitive Quantitative Detection of Anti-HBs Antibody

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Herein we reported a CCD-based reader combined quantum dots-labeled lateral flow strips for ultrasensitive quantitative detection of anti-HBs antibody. The CdTe quantum dots were prepared, then were used to label Hepatitis B Virus surface antigen, and then were fabricated into lateral flow strips. The as-prepared lateral flow strips were used to test different concentration of anti-HBV surface antibodies. The CCD-based reader was designed and fabricated, the quantitative analysis software was compiled, and resultant CCD-based reader system was used for quantitative analysis of examined anti-HBs antibodies on the strips. Results showed that the quantum dots-labeled lateral flow strips could detect the anti-HBs antibody with the limitation concentration of 200 pg/mL, the CCD-based reader system could detect anti-HBs antibody with the sensitivity of 2 pg/mL. In conclusion, the prepared CCD-based reader combined quantum dots-labeled lateral flow strips can be used for quantitative detection of anti-HBs antibody in sera with the sensitivity of 2 pg/mL, and has great potential in applications such as ultrasensitive detection of HBV antigens or antibodies, and other tumor biomarkers in near future.


Document Type: Research Article


Publication date: 2012-06-01

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  • Journal of Biomedical Nanotechnology (JBN) is a peer-reviewed multidisciplinary journal providing broad coverage in all research areas focused on the applications of nanotechnology in medicine, drug delivery systems, infectious disease, biomedical sciences, biotechnology, and all other related fields of life sciences.
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