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Related Concept Videos

Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test01:22

Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test

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In clinical practice, the direct measurement of hepatic blood flow to evaluate liver function presents significant challenges due to the intricate and specialized nature of the necessary techniques. Consequently, healthcare professionals often rely on empirical estimates derived from thorough patient examinations and liver function tests to gauge liver health. Among the tools at their disposal, the Child–Pugh and MELD scoring systems stand out for their ability to categorize and assess...
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Related Experiment Video

Updated: May 3, 2026

Human Liver Microphysiological System for Assessing Drug-Induced Liver Toxicity In Vitro
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A portable centrifugal analyser for liver function screening.

Charles E Nwankire1, Monika Czugala2, Robert Burger1

  • 1Biomedical Diagnostics Institute, National Centre for Sensor Research, Dublin City University, Ireland; School of Physical Sciences, Dublin City University, Ireland.

Biosensors & Bioelectronics
|February 19, 2014
PubMed
Summary
This summary is machine-generated.

A new portable liver assay panel (LAP) on a centrifugal microfluidic analysis system (CMAS) provides rapid, cost-efficient liver function screening. This automated system offers accurate results comparable to lab tests, ideal for resource-poor settings.

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Area of Science:

  • Biomedical Engineering
  • Point-of-Care Diagnostics
  • Microfluidics

Background:

  • Liver failure, often due to drug-induced hepatotoxicity and viral infections, has high mortality rates, particularly affecting HIV and TB patients in resource-limited areas.
  • Existing diagnostic methods for liver function are often time-consuming, expensive, and require specialized laboratory infrastructure, limiting their accessibility in field clinics.

Purpose of the Study:

  • To develop and validate a portable, automated centrifugal microfluidic analysis system (CMAS) for a 5-parameter liver assay panel (LAP).
  • To enable rapid, cost-efficient, and accurate in-situ liver function screening, especially for patients in resource-poor settings.

Main Methods:

  • Integration of sample preparation (plasma extraction from finger-prick blood) with a 5-parameter LAP on a CMAS.
  • Utilized dissolvable-film based centrifugo-pneumatic valving for automated sample handling and colorimetric quantification during rotation.
  • Validation through 96 comparative tests against benchtop and hospital laboratory methods.

Main Results:

  • The entire liver assay panel (LAP) process was completed in under 20 minutes, using significantly reduced reagent volumes compared to standard tests.
  • Accuracy was validated with an average coefficient of variance (CV) of 7.9%, demonstrating no statistical difference compared to established methods (94% and 92% certainty of equivalence).
  • The system was successfully deployed to a centralized lab in Nigeria, proving its utility in a real-world, resource-limited environment.

Conclusions:

  • The developed portable CMAS offers a fast, cost-efficient, and accurate solution for liver function screening.
  • This technology addresses the limitations of traditional lab tests in resource-poor settings, improving accessibility for vulnerable patient populations.
  • Successful deployment in Nigeria highlights the platform's potential to significantly impact healthcare delivery in developing regions.