This PCR handbook establishes an easy approach for the students going through their studies in Molecular Diagnostics. In the area of molecular diagnostics, PCR has allowed target detection to be performed with unprecedented sensitivity and ease. This handbook introduces timely topics such as Clinical Applications of PCR, Real time PCR, PCR Optimization, Application of PCR, PCR Array System Performance, Designing the primers, PCR in diagnosis of diseases and different PCR Techniques and their procedures. It also briefs the techniques which can be used in diagnosis of different diseases. Moreover it contains in-depth information about the PCR Arrays including Cancer Pathway Finder PCR Array, Cardiotoxicity PCR Array, Cell Surface Markers PCR Array, DNA Damage Signaling Pathway PCR Array, DNA Repair PCR Array, Drug Metabolism PCR Array etc. It is hoped that the step-by-step protocols and the explanatory notes will help readers to harness the power of these techniques in their laboratories. In short the aim of this handbook is to provide a meaningful and comprehensive picture of PCR and their types.