Serum galactose determination with centrifugal analyzers

Area of Science:

• Biochemistry
• Clinical Chemistry
• Analytical Chemistry

Background:

• Accurate blood galactose quantification is crucial for diagnosing and monitoring metabolic disorders.
• Traditional methods for galactose determination are often time-consuming and require large sample volumes.
• There is a need for faster, more efficient analytical techniques for blood galactose measurement.

Purpose of the Study:

• To develop and validate a rapid quantitative centrifugal analysis for blood galactose.
• To compare the new method with existing classical techniques in terms of speed and sample volume.
• To assess the applicability of the method in clinical settings, such as galactose tolerance tests.

Main Methods:

• Utilized galactose dehydrogenase for quantitative analysis of galactose in blood.
• Employed centrifugal analysis platforms (GEMSAEC, CentificCHEM) for rapid measurements.
• Tested a modified commercial kit and eliminated the sample deproteinization step.
• Correlated results with established manual (o-toluidine) methods.

Main Results:

• Achieved significantly reduced analysis times (4 min 10 s to 4 min 45 s) and minimal sample volume (5 microliters).
• Eliminated the need for sample deproteinization, simplifying the procedure.
• Demonstrated excellent correlation with classical methods and near 100% analytical recovery.
• Successfully applied the method to intravenous galactose tolerance tests.

Conclusions:

• The described centrifugal analysis offers a rapid, accurate, and efficient method for blood galactose determination.
• This technique simplifies the analytical process by eliminating deproteinization and reducing sample requirements.
• The method is suitable for routine clinical use and valuable for assessing galactose metabolism in tolerance tests.