Evaluation of a new solid-phase immunoassay for alloantibody detection using bromelin-treated and untreated red blood cells

Tamai, T.; Mazda, T.

doi:10.21307/immunohematology-2019-536

Abstract

The enzyme test is used to detect certain antibodies or facilitate antibody identification. This study compares antibody reactivity with bromelin-treated red blood cells (RBCs) and untreated RBCs using a newly developed solid-phase immunoassay. The reactivity of irregular antibodies was tested by a magnetic-mixed passive hemagglutination assay (M-MPHA). In addition, antibody reactivity was tested with dried stroma of bromelin-treated RBCs and untreated RBCs (M-MPHA-Dry). Rh antibodies were detected with enzyme-treated intact RBCs and untreated RBCs by M-MPHA. The slight increase in reactivity using M-MPHA was not seen using dried RBC stroma (M-MPHA-Dry). All donor-derived IgG alloantibodies, which were detected by either a conventional tube enzyme test or an indirect antiglobulin test, were detected by M-MPHA without using enzyme-treated RBCs. Both M-MPHA and M-MPHA-Dry can be used for antibody detection without using enzyme-treated RBCs and are also useful for antibody identification. Immunobematology 2OOI;I7:I7—21.

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Evaluation of a new solid-phase immunoassay for alloantibody detection using bromelin-treated and untreated red blood cells

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