Diabetes i am using insulin injection for more than12 years type humolin 70/30?

You can do better: Your Insulin is outdated. Unless you are in excellent control, or there is a reason not be be in tighter control, ask you doctor to change you to a better, more modern, more effective Insulin regimen. See if other oral therapies would help. Work on diet, exercise, weight loss, monitoring, prevention. See an endocrinologist instead of just your pcp.