I am helping care for my brother who is disabled and unable to care for himself. Food and counting carbs/calories isn't an issue that we can do anything about as he is on a continual feed g-tube. He gets 30 units of Lantus at night. He gets Humulin-R twice a day (9/9) on a sliding scale. I've been told that it is fine to draw the Lantus and then draw the 2 or 4 units of Humulin into the same syringe and give 1 injection. I've also been told that it isn't safe to do it that way, that we should use 2 different syringes and 2 different sites. Which is it? His A1C has been 6.3, 6.1, and 6.1 over the past 6 months. Yet his daily numbers run between 100 and 200, mostly over 150.