A Method to Determine Significant Levels of Immunoglobulin G toAspergillus FumigatusAntigens in an Elisa System and a Comparison with Counterimmunoelectrophoresis and Double Diffusion Techniques

Publisher Website
Google Scholar
Abstract
A method is described which assesses results obtained from in ELISA system for the determination of human serum levels of IgG class antibodies to Aspergillus fumigatus. The method is used to discriminate positive from negative samples, and significant antibody activity may be reported to the clinician, relative to a reference positive control serum monitored simultaneously under the same test conditions. Antibody content is expressed as the absorbance of a certain dilution of serum. Duplicate samples were analysed at a single serum dilution and their absorbtion values obtained from a semi-automated ELISA microplate reader. These were entered into a computer programmed to convert the data into units on a logarithmic scale. In parallel experiments, ELISA results were compared with those obtained by the techniques of counterimmunoelectrophoresis and double diffusion which measure precipitating antibody of all classes. A relatively good degree of correlation between tests was found only among sera with a high level of antibody.

This publication has 22 references indexed in Scilit: