“…Several evidence has been proven and suggested using saliva tests to diagnose, monitor, and predict disease prognosis. It has been indicated that numerous biochemical molecules can be assayed in saliva of patients, for example, cortisol (15), progesterone (16), 17β-estradiol (17), CA15-3 (18), CA125 (19), creatine kinase MB (8), creatine phosphokinase (20), parathyroid hormone (21), cathepsin (22), hc-CRP (23), and aminotransaminase (24). Much attention has been paid to saliva as a biological sample because of the rapid, uncomplicated and non-invasive nature of the sample.…”