Saliva: A Versatile Diagnostic Tool for Health Assessment

Abstract

Given the tiny concentration of salivary ingredients, saliva is being investigated as a diagnostic tool. For health practitioners, monitoring a patient's health and illness state through saliva is a highly important aim. Because it also satisfies the need for a low-cost, non-invasive, and user-friendly screening technique. In comparison to serum and other biological fluids, it provides a cost-effective and non-invasive means of collection for tracking the advancement of disease and overall health. Saliva is used in research not only for tooth health but also for a number of other systemic conditions. Molecular techniques are becoming more and more popular, which has led to their use as sensitive and specific biomarkers in transcriptomics, proteomics, and genomics.

 Numerous elements present in these fluids can serve as biomarkers for the diagnosis of both local and systemic illnesses, including neurological, metabolic, cardiovascular, and cancer diseases. The fundamentals of salivary diagnostic expectoration techniques and their use in a variety of local and systemic illnesses are covered in this abstract. The importance of salivary biomarkers as a diagnostic tool has been highlighted. When anything is awry, the human body has a special way of telling you about it. Through promoting health and delaying the progression of sickness, the chemicals found in bodily fluids can aid in the early diagnosis of illnesses. Better healthcare is made possible by these biomarkers, which are attracting a lot of attention from researchers. .. The future belongs to biosensors that can identify these biomarkers, particularly Point of Care (POC) biosensors that do not require a patient to be physically present in the hospital. We still have a ways to go in applying biosensors for the detection of complex and systemic diseases. Among bodily fluids, saliva-based biosensors are becoming more and more popular because of their non-invasive collection method, capacity to detect systemic disorders, and ability to detect periodontal disease. Saliva-based diagnostic biosensors have garnered significant attention, since kits for ancestry prediction are being sent home by firms. Saliva-based testing for COVID-19 has demonstrated the utility of the inexpensive collection and its successful clinical application. The identification of systemic disorders is a rapidly expanding field of research, based on universal biomarkers. Saliva-based biosensors have been extensively studied, however as POC devices, they still have drawbacks and restrictions. This review discusses the value of saliva and how effective it is as a biosensor. It also includes suggestions that should be taken into account in order to make it usable as a potential diagnostic tool.