The goal of treatment in type 1 DM is to provide insulin in as physiologic a manner as possible. Insulin replacement is accomplished by giving a basal insulin and a preprandial (premeal) insulin. The basal insulin is either long-acting (glargine or detemir) or intermediate-acting (NPH). The preprandial insulin is either rapid-acting (lispro, aspart, or glulisine) or short-acting (regular). Currently, NPH insulin is being used less frequently, whereas insulin glargine and insulin detemir are being used more frequently.