Molecular diagnostics has evolved rapidly during the past decade and has an impact on the practice of medicine as well as many other applications including drug discovery. This book gives an introduction to nanobiotechnology relevant to molecular diagnostics, a field that has been termed nanodiagnostics. The current state of development of nanodiagnostic technologies including nanobiochips and nanobiosensors is reviewed. Besides important applications in clinical diagnostics, the role of molecular diagnostics in drug discovery is also described. The book is a useful book for those developing nanobiotechnology, clinical laboratories, researchers in molecular diagnostics and scientists involved in drug discovery in the pharmaceutical industry. Financiers of nanotechnology have a scientific interest in the new developments and this book will be a source of useful information including the development of technologies in the commercial sector.