Heparin inducerede allergiske reaktioner, som kan være forbundet med et hurtigt fald i antallet af thrombocytter, kan måske observeres (heparin induceret thrombocytopeni [HIT]).
Heparin induced allergic reactions, which can be associated with a rapid decrease of the number of thrombocytes, may be observed (heparin induced thrombocytopenia [HIT]).