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Related Experiment Videos

A solid phase antibody screen.

F V Plapp, L T Sinor, J M Rachel

    American Journal of Clinical Pathology
    |December 1, 1984
    PubMed
    Summary
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    A new automated solid phase antibody screen (SPAS) using microplates offers a sensitive method for detecting IgG antibodies. This RBC adherence assay is comparable to conventional methods and easily read by spectrophotometry.

    Area of Science:

    • Immunology
    • Transfusion Medicine
    • Biotechnology

    Background:

    • Accurate detection of IgG antibodies in donor sera is crucial for transfusion safety.
    • Conventional antiglobulin methods can be labor-intensive and subjective.

    Purpose of the Study:

    • To develop and validate an automated solid phase antibody screen (SPAS) for enhanced efficiency and sensitivity.
    • To evaluate the performance of SPAS compared to traditional methods.

    Main Methods:

    • Development of an automated solid phase antibody screen (SPAS) utilizing microplate technology.
    • Red blood cell (RBC) adherence assay as the detection endpoint, replacing traditional agglutination.
    • Quantification of positive and negative reactions using a microplate spectrophotometer.

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    Main Results:

    • The automated SPAS demonstrated comparable performance to conventional antiglobulin methods for IgG antibody detection.
    • Increased sensitivity was observed in the SPAS, particularly evident through serial dilutions of antibodies.
    • Spectrophotometric reading allowed for clear differentiation between positive and negative reactions.

    Conclusions:

    • Automated SPAS provides a reliable and sensitive alternative for detecting IgG antibodies in donor sera.
    • The microplate-based, spectrophotometer-read assay offers improved efficiency and objectivity in antibody screening.
    • This method holds potential for routine use in blood banking and transfusion services.