Microfluidic assay without blocking for rapid HIV screening and confirmation

Lusheng Song, Yi Zhang, Wenjun Wang, Liying Ma, Yong Liu, Yanlin Hao, Yiming Shao, Wei Zhang, Xingyu Jiang

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The essential step for HIV spreading limitation is the screening tests. However, there are multiple disadvantages in current screening assays which need further confirmation test. Herein we developed a rapid HIV assay combining screening and confirmation test by using the microfluidic network assay. Meanwhile, the assay is accelerated by bypassing the step of blocking. We call this method as microfluidic assay without blocking (MAWB). Both the limit of detection and reagent incubation time of MAWB are determined by screening of one model protein pair: ovalbumin and its antibody. The assay time is accelerated about 25% while the limit of detection (LOD) is well kept. Formatting the method in for both HIV screening (testing 8 HIV-related samples) and confirmation (assaying 6 kinds of HIV antibodies of each sample) within 30 min was successful. Fast HIV screening and confirmation of 20 plasma samples were also demonstrated by this method. MAWB improved the assay speed while keeping the LOD of conventional ELISA. Meanwhile, both the accuracy and throughput of MAWB were well improved, which made it an excellent candidate for a quick HIV test for both screening and confirmation. Methods like this one will find wide applications in clinical diagnosis and biochemical analysis based on the interactions between pairs of molecules.

Original languageEnglish (US)
Pages (from-to)631-640
Number of pages10
JournalBiomedical Microdevices
Volume14
Issue number4
DOIs
StatePublished - Aug 2012
Externally publishedYes

Keywords

  • Blocking
  • Confirmation
  • HIV Screening
  • Microfluidic network assay

ASJC Scopus subject areas

  • Biomedical Engineering
  • Molecular Biology

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