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 Research Article Open Access 
Validation of an LC Method for Therapeutic Drug Monitoring of Voriconazole in Patients 
Laura Zufía*, Azucena Aldaz, Nerea Ibáñez and Joaquín Giráldez
Pharmacy Department, Clínica Universidad de Navarra, c/ Pío XII 36, 31008 Pamplona, Spain
*Corresponding author: Laura Zufía, Pharmacy Department, Clínica Universidad
de Navarra, c/ Pío XII s/n, 31008 Pamplona, Spain,
Fax: +34-948-175278;
Tel:+ 34-948-296631;
E-mail: [email protected]
 
Received March 05, 2010; Accepted April 10, 2010; Published April 10, 2010
Citation: Zufía L, Aldaz A, Ibáñez N, Giráldez J (2010) Validation of an LC Method for Therapeutic Drug Monitoring of Voriconazole in Patients. J Bioanal Biomed 2: 035-043. doi: 10.4172/1948-593X.1000019 
 
Copyright: © 2010 Zufía L, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 
 
Abstract
An accurate and precise LC method using diode array detection for the determination of voriconazole in human serum/plasma samples has been developed and validated for use in pharmacokinetic studies. 

A harmonized validation strategy based on the accuracy profiles was used as a suitable tool to guaranty the quality of the results obtained by the use of the analytical validated methodology in a routine setting and to ensure the risk of obtaining the future measurements outside the previously fixed acceptance limits. 

As pointed recently the FDA, a weighted 1/x2 linear regression model ranging from 0.25 to 10.35 mg/L was elected as the simplest calibration model that maximized the accuracy all over the range. Relative bias was < 7%, assay imprecision was always < 4% and mean extraction recovery from plasma was > 90%. So, accuracy did not exceed the acceptance limits settled atą15% according to the FDA or Washington conference regulatory requirements for bioanalytical methods.  

The validated analytical procedure compliants with strongest regulatory standards and their results are rapid and good enough to enable the laboratory to routinely provide useful and accurate pharmacokinetic data in time to adjust patient regimens.  
 
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