Point-of-Care Technology for Portable Testing Devices: Nanomaterials-Based Optical Biosensors for Cardiovascular Disease Biomarkers presents the latest advances in nanomaterials-based optical biosensor-enabled point-of-care testing (PoCT) devices for the rapid and accurate detection of cardiovascular disease (CVD) biomarkers. This book begins with the introduction of novel cardiovascular biomarkers and advances in point-of-care diagnostics. Subsequent chapters focus on the selection of bioreceptors and the overview of optical nanomaterials for nanobiosensors applications. A major focus is targeted on colorimetric detection, fluorescence, chemiluminescence, Localized Surface Plasmon Resonance, and Surface-Enhanced Raman Scattering-based optical nanobiosensor signaling readout techniques, which enable the detection of CVD biomarkers. Furthermore, this book explores emerging healthcare technologies for next-generation portable PoCT devices and recent advances in nanobiosensor techniques for the rapid detection of CVD biomarkers. One dedicated chapter explores the role of artificial intelligence in enhancing point-of-care diagnostics for CVDs, while another addresses critical regulatory challenges and safety considerations in translating nanomaterial-based biosensors into clinical practice.