highly significantp < 0.001
65 Similarly, compared to the healthy controls, a highly significant correlation ( p < 0.001) was noted between the salivary glucose and serum glucose levels in diabetic patients. 66 Despite no significant changes in serum phosphate levels between healthy adult controls (52.3 ± 8 years) and diabetic patients (48.3 ± 7 years), the salivary phosphate level was significantly ( p < 0.01) higher in diabetic patients ( n = 60; 13.7 ± 4.4 mg/dl) as compared to the healthy controls ( n = 60; 8.3 ± 1.9 mg/dl). 66 This shows a trend of elevation of salivary phosphate levels, even before apparent changes in serum level of phosphate in metabolic diseases.