Benzethonium chloride method for proteins adapted to centrifugal analysis

Area of Science:

• Clinical Chemistry
• Biochemical Analysis

Background:

• Accurate protein concentration measurement is crucial for diagnosing various medical conditions.
• Existing protein measurement methods may have limitations in specific sample types or analytical platforms.

Purpose of the Study:

• To adapt and validate a benzethonium chloride protein assay for the Cobas Bio centrifugal analyzer.
• To assess the performance characteristics of the adapted method for body fluid protein analysis.

Main Methods:

• Adaptation of a benzethonium chloride protein assay for automated analysis.
• Utilizing the Cobas Bio analyzer's stepwise reagent addition and absorbance measurement capabilities.
• Performing blanking of urine specimens for accurate readings.

Main Results:

• The adapted method demonstrated excellent curve stability and precision.
• Results obtained using this method correlated well with four other established protein assays.
• The analyzer's stepwise reagent addition was essential for proper urine specimen blanking.

Conclusions:

• The benzethonium chloride method is effectively adapted for the Cobas Bio analyzer.
• This automated method provides reliable and precise protein concentration measurements in various body fluids.
• The adapted assay offers a viable alternative for clinical protein analysis.