Correlation between fasting blood glucose and salivary glucose level

Current diabetes treatments are based on blood glucose level monitoring. However, it is necessary to design another non-invasive reliable diagnostic method. In current study, we aimed to determine the relation between fasting blood sugar (FBS) and fasting salivary glucose.

In this case-control study, 30 diabetic patients (case) and 30 non diabetic individuals (control) referred to a military hospital in 2019 were studied. The correlation between FBS and fasting salivary glucose was evaluated with Pearson test.

The mean age of participants in control and case group was 55.4±2.8 and 63.7±2 years old, respectively. The mean FBS was 100.5±3.3 and 149.2±3.8 mg/dL in controls and cases, respectively, which were significantly different from each other (p<0.001). The mean fasting salivary glucose in the control group and the case group
was 0.8±0.14 and 1.59±0.35 mg/dL, respectively, which was significant different in the two groups (p=0.038). Pearson analysis showed that there was a positive correlation between FBS and fasting salivary glucose (r=0.265, p=0.042).

Fasting salivary glucose can be used as a noninvasive tool to control blood glucose in diabetics.