Hemoglobin monitoring is a research area focused on measuring and tracking the levels of hemoglobin, a protein found in red blood cells that is responsible for carrying oxygen throughout the body. Monitoring hemoglobin levels is important in various medical conditions, such as anemia, blood loss, and certain chronic diseases, as it can help healthcare providers assess a patient's overall health and make informed decisions about treatment options. Hemoglobin monitoring techniques include blood tests, pulse oximetry, and other non-invasive methods. This research area aims to improve the accuracy, efficiency, and accessibility of hemoglobin monitoring to enhance patient care.