This handbook is fully updated to the current regulatory requirement in the pharmaceutical laboratory world. Purpose of book is to assist individual on Gx Prequirement, good manufacturing practices, good laboratory practices, performance monitoring and root cause analysis and quality triangles The purpose of this hand book is to provide easily accessible knowledge about the good laboratory practices. In current pharmaceutical world we need a fast and reliable source of techniques to implement the system and resolve problem. This handbook gives pathway for us to take right decision. Nothing comes in one box for us. Changes happen with or without us. The higher we go in the organization, the more complex ore challenges become .This book gives overall view of quality laboratory system. We hope this handbook can contributes to assemble lots of related materials and package them in one place for easy reference and access. I encourage you to read, enjoy, study and learn from this book and go forth and empower you/ your teams to lead you and your organization to world class results.