When fasting blood sugar is 125 to 185, should insulin be injected?
As you know, there are many different types of insulin. There are rapid-acting insulins that cover meals (such as Humalog, Novolog or Apidra). There are also basal insulins (such as Lantus or Levemir) that cover insulin requirements between meals and overnight. In addition, there is intermediate-acting insulin (NPH insulin). There are also pre-mixed insulins that contain both rapid-acting and intermediate-acting insulin. Regardless of the type of insulin that you are taking, the reason to take insulin before breakfast is to either cover the carbohydrates in the breakfast meal or to prevent the glucose from increasing later in the day. In general, it would be recommended to take your insulin injection before breakfast if fasting glucose is in the range that you mention. It is important to review with your healthcare provider the specific type of insulin that you are taking and the parameters around when to take your insulin injection.