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Related Experiment Videos

Coupling immunoassays with chromatographic separation techniques.

Z Tang1, H T Karnes

  • 1Department of Pharmaceutics, Medical College of Virginia, Virginia Commonwealth University, Richmond, VA 23298-0588, USA.

Biomedical Chromatography : BMC
|September 26, 2000
PubMed
Summary
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Combining immunoassays with High-Performance Liquid Chromatography (HPLC) offers sensitive and selective analysis of molecules. This review explores hyphenated techniques for efficient sample analysis, highlighting their benefits and drawbacks.

Area of Science:

  • Analytical Chemistry
  • Biochemistry
  • Separation Science

Background:

  • Immunoassays coupled with High-Performance Liquid Chromatography (HPLC) are increasingly vital for analyzing diverse biological and nonbiological samples.
  • This hyphenated approach offers enhanced sensitivity, selectivity, cost-effectiveness, low maintenance, and automation potential for molecular analysis.

Purpose of the Study:

  • To review the applications of immunoassays hyphenated with HPLC separation techniques.
  • To discuss both pre-column immunoextraction and post-column immunodetection modes.
  • To analyze the advantages and limitations of various immunoassay formats within hyphenated systems.

Main Methods:

  • Review of literature on immunoassays coupled with HPLC.
  • Focus on pre-column immunoextraction and post-column immunodetection strategies.

Related Experiment Videos

  • Exclusion of systems solely separating immunoassay fractions without enhanced selectivity.

    • Main Results:

    • Post-column immunodetection utilizes various immunoassay formats: direct, one-site, competitive, and sandwich assays.
    • Homogeneous immunodetectors offer convenience due to the absence of separation and column regeneration steps.
    • Heterogeneous immunoassays generally provide higher sensitivity by removing interfering substances before detection.

    Conclusions:

    • Hyphenated immunoassay-HPLC techniques provide a powerful tool for sensitive and selective molecular analysis.
    • Both homogeneous and heterogeneous immunodetection methods have distinct advantages and limitations impacting their application.
    • The choice of method depends on the specific analytical requirements regarding sensitivity, convenience, and sample matrix.