Til patienter med nyreproblemer og patienter, som skal opereres, skal Retacrit gives ved indsprøjtning i en blodåre, mens patienter i kemoterapi skal have det indsprøjtet under huden.
For patients with kidney problems or about to undergo surgery, Retacrit must be injected intravenously (into a vein), while patients receiving chemotherapy receive it subcutaneously (under the skin).