Point of care (POC) diagnostic devices are predominantly used for the diagnosis and monitoring of diseases. To make these technologies scalable for manufacturing, user-friendly, inexpensive, sensitive, and rapid, a combination of such devices with nanomaterials is required. This book deals with new emerging fields such as POC technologies and advanced nanotheranostics using nanomaterials and their technologies and applications in diagnosis. In this book, current advances for the application of nanomaterials such as carbon nanotubes, graphene, and magnetic nanoparticles in POC devices and future directions are reviewed.This book: Presents a comprehensive account of needs and challenges of POC diagnostics Describes the fundamentals of rationale of nanomaterials as remarkable building blocks for biosensing Discusses development of critical diagnosis in POC systems Deals with the advantages of nanomaterial-based sensing strategies Illustrates the challenges and breakthroughs of technologies for cost-efficient biosensing platform The book is aimed at researchers and professionals in nanotechnology and biomedical engineering.