Hi , My friend is doing such things and sending me updates. He's not staying near to me. After injecting complete cartridge of lantus his sugar levels dropped multiple times in that day but he had some juices and food to get his levels up. Not sure y he's doing such things but I want to know will there any long term effects by these action can we detect by any diagnosis that the effects are due to injecting such insulins? Please help me out if so I will try to plan such diagnosis to him so that I can prove to doctor that he's injecting insulins and try to stop him. Please help me out what diagnosis I can do for him to prove he's injecting insulins.