Bioanalytical Method Development
Bioanalytical Method Development contains 9 topic pages in Pharmaceutical Quality Assurance.
Bioanalytical Method Development encompasses the design, optimisation, and validation of analytical procedures used to quantify drugs and their metabolites within biological matrices such as plasma, urine, whole blood, tissue, and saliva. These procedures form the scientific foundation of pharmacokinetic, pharmacodynamic, toxicokinetic, and bioequivalence studies that are mandatory prerequisites for the regulatory approval of both new chemical entities and generic pharmaceutical products. This chapter traces the complete bioanalytical workflow, beginning with the regulatory framework governing bioanalysis, proceeding through compound characterisation, biological matrix selection, sample preparation, chromatographic and mass spectrometric method development, and culminating in full method validation, incurred sample reanalysis, pharmacokinetic data analysis, and bioequivalence assessment. A rigorous understanding of this workflow is essential for pharmaceutical scientists engaged in drug development, clinical pharmacology, and regulatory affairs.
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Introduction to Bioanalysis and Regulatory Framework
Definition and Scope Bioanalysis is defined as the quantitative measurement of drugs, whether small molecules or biological therapeutics, and their...
Compound Understanding and Pre-Development Planning
Physicochemical Characterisation Before any bioanalytical method development commences, the analyst must gather comprehensive physicochemical data...
Biological Matrix Selection and Sample Collection
Selecting the Biological Matrix The choice of biological matrix is governed by the study objective, the physicochemical properties of the drug, and...
Sample Preparation Method Development
Rationale for Sample Preparation Biological matrices contain thousands of endogenous compounds, including proteins, phospholipids, bile acids, and inorganic...
Chromatographic and Mass Spectrometric Method Development
Instrument Configuration and MS Tuning The majority of contemporary bioanalytical methods employ liquid chromatography-tandem mass spectrometry using a...
Full Method Validation under ICH M10
Regulatory Basis of Validation Bioanalytical method validation establishes documented evidence that a method is suitable for its intended purpose and is...
Incurred Sample Reanalysis
Purpose and Regulatory Basis Incurred sample reanalysis involves the re-analysis of a defined subset of actual study samples, containing drug arising from...
Pharmacokinetic Data Analysis and Reporting
Non-Compartmental Analysis and Key Parameters Following generation of validated concentration-time data, non-compartmental analysis is typically performed...
Bioequivalence Studies: Design and Statistical Evaluation
Study Design A bioequivalence study compares the rate and extent of absorption of a test formulation, typically a generic or modified product, against a...