A Review of HPLC Method Development and Validation as per ICH Guidelines

Method development and validation are continuous processes that progress in parallel with the evolution of drug products. Changes encountered during drug development may require modifications to existing analytical methods. These modifications to the methods, in turn, may require additional validation. The advent of new techniques and improved instrumentation in the field of analysis may give way to more sensitive, precise, and accurate methods if the existing methods are erratic or unreliable; time-consuming, or too expensive. Thus, continuous new analytical method development and validation activities are essential for the growing drug development programs.