To evaluate the effect of Qurs Tabasheer on STZ-induced diabetes mellitus rats, several biochemical estimations were carried out in all groups of experimentally induced diabetes rats for the estimation of plasma glucose, serum cholesterol, serum triglycerides, glycated heamoglobin (A1c), hexokinase, glucose-6-phosphatase and fructose-1-6-biphophatase (Table 5). Here, G6PC1 is linked to diabetes mellitus.