Rapid, reproducible enzyme immunoassay for gentamicin

Area of Science:

• Clinical Chemistry
• Biochemistry
• Enzyme-linked Immunoassays

Background:

• Gentamicin is an aminoglycoside antibiotic requiring therapeutic drug monitoring.
• Radioimmunoassay (RIA) is a common method for gentamicin quantification.
• There is a need for alternative, non-radioactive methods for drug assays.

Purpose of the Study:

• To compare a novel enzyme immunoassay (EIA) for gentamicin with radioimmunoassay (RIA).
• To evaluate the accuracy, specificity, and ease of performance of the gentamicin EIA.
• To assess the potential of this EIA as an alternative method for aminoglycoside quantification.

Main Methods:

• Development and validation of an enzyme immunoassay for gentamicin using glucose-6-phosphate dehydrogenase.
• Comparison of gentamicin measurements obtained by EIA and RIA.
• Assessment of assay specificity and performance characteristics.

Main Results:

• The enzyme immunoassay demonstrated high accuracy and specificity for gentamicin.
• The EIA procedure was found to be simple and easily performed.
• Results showed good correlation between the EIA and RIA methods.

Conclusions:

• The developed enzyme immunoassay provides a reliable and practical alternative to RIA for gentamicin.
• This EIA method is suitable for routine clinical laboratories, particularly those already utilizing EIA for other drug assays.
• The enzyme immunoassay offers a valuable tool for therapeutic drug monitoring of aminoglycosides.