Human plasma Gas6 protein concentrations are associated with corresponding glucose levels during OGTT. A total of 104 type 2 diabetic patients were collected and received OGTT. (A) The plasma Gas6 value was significantly inversely correlated with glucose levels during OGTT (p for trend < 0.001). (B) The plasma Gas6 and glucose ratio showed significant reduced during OGTT (p for trend < 0.001). Lower plasma levels of Gas6 tended to be associated with higher plasma glucose levels.