Hvis hæmoglobinniveuaet efter otte ugers behandling ikke er steget med mindst 1 g/ dl (0, 62 mmol/ l), anses respons for usandsynligt, og behandlingen bør afbrydes.
If, after 8 weeks of therapy, the haemoglobin value has not increased by at least 1 g/ dl (0.62 mmol/ l), response is unlikely and treatment should be discontinued.