Blood activities of aspartate aminotransferase (AST, EC 2.6.1.1), alanine aminotransferase (ALT, EC 2.6.1.2), and alkaline phosphatase (ALP, EC 3.1.3.1) were elevated in rats with diabetes induced by STZ alone [32,74] or by STZ combined with an HFD [62]. Here, GPT is linked to diabetes mellitus.