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Field-deployable modular absorbance analysis platform with standardized electronics for point-of-care diagnostics.

Kyung Won Lee1, Nam Ho Bae1, Kyoung G Lee1

  • 1Center for NanoBio Development, National NanoFab Center (NNFC), Daejeon, 34141, Republic of Korea.

Biosensors & Bioelectronics
|December 27, 2025
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Summary
This summary is machine-generated.

A new modular absorbance analysis platform (MAAP) enables portable enzyme-linked immunosorbent assays (ELISA) for point-of-care testing. This adaptable system simplifies complex ELISA setups for field diagnostics, demonstrating successful C-peptide analysis.

Keywords:
C-peptide analysisPoint-of-care testing devicePortable optical analyze

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Area of Science:

  • Biomedical Engineering
  • Analytical Chemistry
  • Diagnostics

Background:

  • The demand for personalized healthcare and real-time patient monitoring drives POCT innovation.
  • Conventional ELISA is sensitive and selective but lacks portability due to complex components.
  • Existing ELISA systems are unsuitable for field deployment.

Purpose of the Study:

  • To develop a modular absorbance analysis platform (MAAP) for simplified, portable ELISA.
  • To create a field-deployable system overcoming limitations of conventional ELISA.
  • To demonstrate the MAAP's capability for on-site diagnostics.

Main Methods:

  • Designed a modular platform integrating light source, sensor, display, and battery.
  • Utilized a polydimethylsiloxane (PDMS)-based bioreactive chamber for immunoassay.
  • Performed competitive immunoassay for C-peptide analysis after system transport and reassembly.

Main Results:

  • The MAAP enabled compact, field-deployable ELISA operation.
  • Successful on-site colorimetric signal detection and C-peptide quantification were achieved.
  • Demonstrated analytical performance and practical applicability within a defined concentration range.

Conclusions:

  • The proposed modular ELISA platform offers a versatile and scalable solution for POCT.
  • MAAP simplifies ELISA for accessible, real-time diagnostics outside traditional labs.
  • This technology has significant potential for advancing point-of-care testing.