- Patients whose laboratory results reveal severe anaemia (as defined by a haemoglobin value <6 mmol/L [9.7 g/dL] for adults receiving erythropoietin, <4.1 mmol/L [6.6 g/dL] for paediatric patients [regardless of erythropoietin treatment]), leukopenia (as defined by a WBC value of <2500/mm3) or thrombocytopenia (as defined by a platelet count of <75,000/mm3).