Methods such as Enzyme-Linked Immunosorbent Assay (ELISA), High-Performance Liquid Chromatography (HPLC), Liquid Chromatography-Mass Spectrometry (LC-MS), Ultraviolet-Visible (UV-VIS) spectrophotometry, Raman spectroscopy, and Capillary Electrophoresis are commonly used in laboratories for analyzing salivary glucose and pH levels . However, these approaches are often hindered by complexities such as the need for sophisticated instrumentation, intricate procedures, costly reagents, exorbitant expenses, and specialized expertise. Hence, these techniques are not suitable for point-of-use testing of glucose and pH monitoring. Recently, various non-invasive methods for detecting salivary glucose and pH levels have been reported, including those based on thin-film transistors have shown great promise for point-of-use testing. These electrochemical sensors are known for their affordability, ease of use, exceptional sensitivity, and quick response times. Furthermore, they can be miniaturized into arrays and manufactured on a large scale using cost-efficient production techniques.