A general-purpose reagent capable of reacting with immunoglobulin G in a modified enzyme-linked immunosorbent assay technique was prepared by using protein A coupled with horseradish peroxidase. The reagent detected low levels (0.003 to 1.0 microgram/ml) of human immunoglobulin G and was also applied in an enzyme-linked immunosorbent assay for titration of antibody to human cytomegalovirus. The antibody titers to human cytomegalovirus determined by enzyme-linked immunosorbent assay and by complement fixation were compared. The correlation coefficient between the two techniques was 0.85, but the enzyme-linked immunosorbent assay was 10 times more sensitive than complement fixation in terms of antibody titers detected.
No takes yet. Share an insight, caveat, or question.
Madore et al. (1979) studied this question.