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Related Experiment Videos

Improved solid-phase extraction technique for plasma flecainide analysis by high-performance liquid chromatography

K M Wilson1, J J Schneider, P J Ravenscroft

  • 1Newcastle Mater Misericordiae Hospital, New South Wales, Australia.

Therapeutic Drug Monitoring
|August 26, 1998
PubMed
Summary
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A new method efficiently extracts flecainide from plasma using solid-phase extraction. This rapid, accurate, and reproducible assay allows for quick analysis of flecainide acetate concentrations.

Area of Science:

  • Analytical Chemistry
  • Pharmacokinetics

Background:

  • Accurate quantification of flecainide in plasma is crucial for therapeutic drug monitoring.
  • Existing methods may be time-consuming or lack efficiency.

Purpose of the Study:

  • To develop and validate a rapid, simple, and cost-effective method for flecainide analysis in plasma.
  • To establish a high-performance liquid chromatography (HPLC) assay with fluorometric detection for flecainide.

Main Methods:

  • Solid-phase extraction (SPE) using C18 columns for sample preparation.
  • Reverse-phase HPLC with fluorometric detection for flecainide quantification.
  • Assay validation including linearity, accuracy, and reproducibility assessment.

Main Results:

Related Experiment Videos

  • High-efficiency flecainide extraction (>85%) achieved with a simple SPE procedure.
  • Limit of detection for flecainide acetate was approximately 15 ng/ml.
  • Assay demonstrated excellent linearity (r2 > 0.999), accuracy (within 5% of nominal values), and reproducibility (CVs < 3%).
  • Rapid sample preparation and analysis allowed results within 2-3 hours.

Conclusions:

  • The developed method is excellent for flecainide analysis, offering simplicity, speed, and cost-effectiveness.
  • This assay is suitable for routine therapeutic drug monitoring of flecainide.
  • The solid-phase extraction technique is a reliable approach for plasma sample preparation.