"The Global CRO Council (GCC) for Bioanalysis was formed in an effort to bring together many CRO leaders to openly discuss bioanalysis and the regulatory challenges unique to the outsourcing industry"

A sensitive and fast high-performance liquid chromatography-electrospray ionization-MS/MS method for the simultaneous quantitation of levodopa and carbidopa in human plasma was developed and validated. A simple protein precipitation step with perchloric acid was used for the cleanup of plasma, and methyldopa was added as an internal standard. The analyses were carried out using an ACE C(18) column (50 × 4.6 mm i.d.; 5 µm particle size) and a mobile phase consisting of 0.2% formic acid and acetonitrile (90:10). The triple-quadrupole mass spectrometer equipped with an electrospray source in positive mode was set up in the selective reaction monitoring mode to detect the ion transitions m/z 198.1 → m/z 107.0, m/z 227.2 → m/z 181.0, and m/z 212.1 → m/z 139.2 for levodopa, carbidopa, and methyldopa, respectively. The method was validated and proved to be linear, accurate, and precise over the range 50-5000 ng/mL for levodopa and 3-600 ng/mL for carbidopa. The proposed method was successfully applied in a pharmacokinetic study with a levodopa/carbidopa tablet formulation in healthy volunteers.

Closed Forums. These North American and European events provided a unique opportunity for CRO leaders to openly share opinions and perspectives and to agree on unified bioanalytical recommendations specifically in relation with the new EMA guideline.The Global CRO Council for Bioanalysis (GCC) [101] is a global independent group of many Contract Research Organization (CRO) leaders. The GCC was formed in September 2010 to meet regularly and discuss bioanalytical issues and regulatory challenges, many of them unique to the outsourcing industry. The outcome of the discussions held as part of these GCC closed forum meetings are shared with the global bioanalytical community via pertinent publications [2][3][4][5][6] and appropriate conference presentations.Prior to the issue of this new guideline, the November 2009 Draft EMA Guideline on BMV defined the proposed guideline and criteria of the EMA on validation of bioanalytical methods and their application in the analysis of study samples from animal and human studies [7].The EMA Guideline states that the validation of the bioanalytical methods to be used on non-clinical pharmacotoxicological studies to be submitted in a marketing authorization application should be performed following the Recommendations on the interpretation of the new European Medicines Agency Guideline on Bioanalytical Method Validation by Global CRO Council for Bioanalysis (GCC) "These North American and European events provided a unique opportunity for CRO leaders to openly share opinions and perspectives and to agree on unified bioanalytical recommendations specifically in relation with the new EMA guideline.

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An open letter written by the Global CRO Council for Bioanalysis (GCC) describing the GCC survey results on stability data from co-administered and co-formulated drugs was sent to multiple regulatory authorities on 14 December 2011. This letter and further discussions at different GCC meetings led to subsequent recommendations on this topic of widespread interest within the bioanalytical community over the past 2 years.