Webster Dictionary(0.00 / 0 votes)Rate this definition: Melanin(noun) a black pigment found in the pigment-bearing cells of the skin (particularly in the skin of the negro), in the epithelial cells of the external layer of the retina (then called fuscin), in the outer layer of the choroid, and elsewhere. It is supposed to be derived from the decomposition of hemoglobin.
How to prepare your insulin dose if you are using two types of insulin: 1  When you mix regular insulin with another type of insulin, always draw the regular insulin into the syringe first. When you mix two types of insulins other than regular insulin, it does not matter in what order you draw them into the syringe.
How to Mix Insulin. Purpose of mixing insulin: To prevent having to give the patient two separate injections (hence better for the patient). Most commonly ordered insulin that are mixed: NPH (intermediate-acting) and Regular insulin (short-acting). 1  Never mix Insulin Glargine âLantusâ with any other type of insulin.  Administer the dose within 5 to 15 minutes after drawing up because the regular insulin binds to the NPH and this decreases its action.