Yaz›flma Adresi/Address for Correspondence

Objective: Itching erythematous or eczematous plaques around injection sites are fairly frequent si-de effects of subcutaneous (SC) heparin therapy. This allergic delayed-type hypersensitivity (DTH) to heparin can be diagnosed by skin tests (intrader-mal, patch) or, in cases where the skin tests are fal-sely negative, by a SC provocation test. After diag-nosis, allergy to SC injected heparin raises the clini-cally important question of whether or not an int-ravenous (IV) heparin therapy would be tolerated. Materials and Methods: Therefore, in recent ye-ars, all patients presenting to our allergy unit with suspected heparin allergy underwent a standardi-zed stepwise allergologic work-up including diag