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Related Experiment Video

Updated: May 25, 2026

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Lab-on-a-disc for fully integrated multiplex immunoassays.

Jiwoon Park1, Vijaya Sunkara, Tae-Hyeong Kim

  • 1School of Nano-Bioscience and Chemical Engineering, Ulsan National Institute of Science & Technology, 100 Banyeon-ri, Eonyang-eup, Ulju-gun, Ulsan 689-798, Republic of Korea.

Analytical Chemistry
|January 27, 2012
PubMed
Summary
This summary is machine-generated.

This study introduces a rapid, automated lab-on-a-disc for detecting cardiovascular disease biomarkers in whole blood or saliva. The microfluidic device offers comparable performance to traditional ELISA but with reduced sample volume and time.

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Area of Science:

  • Biomedical Engineering
  • Analytical Chemistry
  • Point-of-Care Diagnostics

Background:

  • Cardiovascular disease diagnosis relies on detecting specific protein biomarkers.
  • Conventional assays like ELISA are time-consuming and require large sample volumes.
  • There is a need for rapid, automated, and cost-effective diagnostic tools.

Purpose of the Study:

  • To develop a cost-effective, rapid, and automated lab-on-a-disc system for simultaneous detection of multiple protein biomarkers.
  • To enable early diagnosis of cardiovascular disease using raw samples like whole blood or saliva.
  • To compare the performance of the developed system with conventional enzyme-linked immunosorbent assay (ELISA).

Main Methods:

  • A novel centrifugal microfluidic layout was designed on a disc.
  • Bead-based sandwich enzyme-linked immunosorbent assay (ELISA) was employed for biomarker detection.
  • Simultaneous detection of high sensitivity C-reactive protein, cardiac troponin I, and N-terminal pro-B type natriuretic peptide was performed.

Main Results:

  • The lab-on-a-disc system successfully performed simultaneous detection of three cardiovascular disease biomarkers.
  • Assay performance, including limit of detection and dynamic range, was comparable to conventional ELISA.
  • Significant reductions in minimum sample volume (200 μL), washing buffer (700 μL), and total process time (20 min) were achieved.

Conclusions:

  • The developed automated lab-on-a-disc is a viable tool for rapid and cost-effective cardiovascular disease biomarker detection.
  • This technology offers a significant improvement over conventional methods in terms of speed and sample/reagent consumption.
  • The system demonstrates potential for point-of-care applications in diagnosing cardiovascular diseases.