Figure 3From: Delayed-Type Heparin Allergy: Diagnostic Procedures and Treatment Alternatives--A Case Series Including 15 PatientsResults of intracutaneous heparin testing, 96 hours after injection of UFH and LMWH into the volar aspect of the forearm. The injection of heparin calcium, dalteparin, and heparin sodium led to infiltrated lesions with blisters.Back to article page