Our expert says:
According to my copy of MIMS, metformin is prescribed for non-insulin dependent diabetes mellitus and/or insulin resistance, "when diet management and exercise, alone does not result in adequate glycaemic control." I think what happened to your brother was a case of crossed wires. He did not realise that he was not supposed to take anything by mouth (no food, no beverages) before his blood test, while the dr thought he had fasted and had high insulin and glucose levels. I hope that the second test will be more successful.
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