Romed 3-piece insulin syringe with needle 29G
 
Insulin syringe needle size
29 G x ½ (0.33 mm x 12.7 mm) 100 IU "International Unit" or "Insulin Unit" LU or IU is the abbreviation for "International Unity" in medicine. For example, reference can be made to the activity of an enzyme or the concentration of a drug, such as antibiotics or insulin. The IE is not based on the amount of substance in a preparation, but on the pharmacological effect. In diabetology, IE is sometimes translated as "insulin unit". Some authors also use only an "E" (unit) or a "U" (unit). One unit of insulin is equal to 0.042 mg of pure insulin. Conversely, 1 mg of insulin then contains 28 IU. Since the insulins used for the treatment vary in purity depending on the manufacturing process and have a different effect, this value refers to the efficacy of a standard preparation.