Figure 1From: Successful desensitization with human insulin in a patient with an insulin allergy and hypersensitivity to protamine: a case report Intradermal testing showing positive reactions against Levemir© (1), Huminsulin basal© (2), Humalog© (3) , and Lantus© (4) 20 minutes after injection. Histamine (H) served as a positive, aqua dest. (Ø) as a negative control.Back to article page