Hvis hæmoglobinet er steget < 1 g/ dl (< 0, 62 mmol/ l), og reticulocyttællingen er steget < 40000 cells/ µl over baseline, er respons dog usandsynlig, og behandling bør ophøre.
However, if the haemoglobin has increased < 1 g/ dl (< 0.62 mmol/ l) and the reticulocyte count has increased < 40,000 cells/ µl above baseline, response is unlikely and treatment should be discontinued.