Rapid quantitative microenzyme-linked immunosorbent assay for tetanus antibodies

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Abstract
A rapid quantitative microenzyme-linked immunosorbent assay for the detection of IgG antibodies to tetanus toxoid is described. The assay is performed in 2.5 h and detects antibody levels of 0.1-6 U/ml. Quantitation of the antibody concentration is unique in that multiple serum dilutions are tested on a single patient, the results are plotted as an antibody dilution curve and the area under the curve is integrated for a final concentration. Tests for immune status on sera from 77 individuals demonstrated tetanus antibody concentrations of .gtoreq. 0.1 U/ml in 92% of a pediatric group and 62% of an adult group. The microenzyme-linked immunosorbent assay procedure is reproducibile and is useful for the determination of immune status and immunization response.