Trazodone: a simple, clean extraction and rapid quantification by high pressure liquid chromatography

Area of Science:

• Analytical Chemistry
• Pharmacology

Background:

• Trazodone is an antidepressant medication.
• Accurate therapeutic drug monitoring (TDM) is crucial for optimizing trazodone dosage and minimizing adverse effects.
• Existing analytical methods for trazodone may lack the efficiency or accessibility required for routine clinical use.

Purpose of the Study:

• To develop and validate a precise, rapid, and reliable High-Performance Liquid Chromatography (HPLC) method for the quantification of trazodone.
• To establish a method suitable for transfer to clinical laboratories for routine therapeutic drug monitoring.

Main Methods:

• Development of a reverse-phase HPLC system for trazodone analysis.
• Sample preparation utilizing simple alkaline extraction into an organic solvent mixture.
• Assay validation including linearity, precision, and reliability assessment.

Main Results:

• The developed HPLC method is precise, rapid, and reliable.
• Trazodone elutes at 3.2 minutes under the specified reverse-phase conditions.
• The method demonstrates linearity up to 3000 ng/ml without requiring elevated column temperatures.
• The sample preparation is straightforward, involving alkaline extraction.

Conclusions:

• A highly efficient and transferable HPLC method for trazodone analysis has been successfully developed.
• This method has the potential to facilitate widespread therapeutic drug monitoring of trazodone.
• The availability of this assay may aid in defining the optimal role of TDM in trazodone therapy.