Rapid, reproducible enzyme immunoassay for tobramycin

Area of Science:

• Biochemistry
• Analytical Chemistry
• Clinical Chemistry

Background:

• Tobramycin is an important aminoglycoside antibiotic requiring therapeutic drug monitoring.
• Radioimmunoassay (RIA) is a common method for tobramycin quantification but involves radioactive materials.
• Enzyme immunoassays offer a non-radioactive alternative for drug level determination.

Purpose of the Study:

• To compare a novel enzyme immunoassay (EIA) for tobramycin with the established radioimmunoassay (RIA).
• To evaluate the accuracy, specificity, and ease of performance of the tobramycin EIA.

Main Methods:

• Enzyme immunoassay (EIA) utilizing glucose 6-phosphate dehydrogenase.
• Radioimmunoassay (RIA) as the reference method.
• Comparative analysis of assay results.

Main Results:

• The tobramycin EIA demonstrated high accuracy and specificity.
• The EIA method was found to be easily performed.
• Results showed good correlation between EIA and RIA.

Conclusions:

• The developed enzyme immunoassay provides a reliable and practical method for tobramycin quantification.
• This EIA serves as a viable alternative to RIA for aminoglycoside monitoring.
• The method is suitable for clinical laboratories, especially those already employing EIA for other drug assays.