For people with diabetes who inject insulin, the syringe and needle size can make a big difference in comfort and staying on track with steady blood sugar ... Needle gauge 0.3 mL 30 units of ...

A 25-gauge needle attached to a 1 or 3 ml syringe is inserted just lateral of the manubrium and cranial to the first rib. The needle is held at a 45° angle ... Often, blood will begin to flow ...