Rapid quantification of C-reactive protein by centrifugal analysis

Area of Science:

• Clinical Chemistry
• Immunology
• Biomedical Engineering

Background:

• C-reactive protein (CRP) is a key biomarker for inflammation.
• Accurate and rapid CRP measurement is crucial for diagnosing and monitoring various conditions.
• Existing methods may lack speed or simplicity for routine clinical use.

Purpose of the Study:

• To develop and validate a rapid, simple immunoturbidimetric assay for serum CRP.
• To assess the performance of the assay using an automated microcentrifugal analyzer.
• To compare the new method with a standard radial immunodiffusion technique.

Main Methods:

• Development of an immunoturbidimetric assay for CRP.
• Utilization of the Instrumentation Laboratory Multistat III microcentrifugal analyzer for automated quantification.
• Validation through assessment of within-run and between-run coefficients of variation.
• Comparison with the radial immunodiffusion method using regression analysis.

Main Results:

• The method provides quantitative CRP results automatically within minutes.
• Coefficients of variation ranged from 2.5% to 12.7% for different concentration levels.
• Normal serum CRP values were established as less than 10 mg/L.
• Excellent correlation was observed with the radial immunodiffusion method (r = 0.979).

Conclusions:

• The described immunoturbidimetric method is rapid, simple, and accurate for serum CRP determination.
• The automated assay is suitable for routine clinical laboratory use.
• This method offers a reliable alternative to existing CRP measurement techniques.