This book addresses the concept of nanosensors and their utilization in healthcare diagnostics, and therapy. It covers the principles and mechanisms involved in nanosensor-based diagnostics platforms. It also discusses various approaches and techniques used in the preparation of nanosensors as well as the biomedical application of nanosensors in clinical diagnostics and their significance in the detection, treatment, and management of diseases. This book is a useful reference for researchers, graduate students, and industry professionals studying nanosensors in biological and medical sciences.