Integrated microfluidic system for electrochemical sensing of urinary proteins

Cheng Yu Liu, John Rick, Tse Chuan Chou, Huei Huang Lee, Gwo Bin Lee

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


This study reports a new microfluidic system integrated with a microfluidic control module and a micro electrochemical module for detection of urinary proteins. The integrated microsystem can automatically detect proteins in urine with a high sensitivity. The microfluidic control module consists of a new two-way, spiral-shape micropump which can transport the urine samples to the sensing regions. The net ionic charges of the protein samples can be detected while the samples flow through the sensing region of the micro electrochemical module. Two major urinary proteins including lysozyme and albumin are detected in a multiple-channel layout with little human intervention and are analyzed in a short period of time, while only consuming a 100-μl urine sample. The developed microfluidic system could lead to a convenient, yet crucial, platform for chemical and biological detection and diagnosis.

Original languageEnglish
Pages (from-to)201-211
Number of pages11
JournalBiomedical Microdevices
Issue number1
Publication statusPublished - 2009

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering
  • Molecular Biology


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