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We examined the hypothesis that administering epoetin to maintain a lower target haemoglobin (Hb) results in a reduced side effect profile and a lower maintenance epoetin dose. We report a prospective study of 14 haemodialysis patients assessing epoetin dose efficiency and side effect profile of partially correcting dialysis-associated anaemia. Initial Hb was 6.2 +/- 0.6 g/dl (mean +/- 1 SD). Intravenous epoetin was commenced at 120 IU/kg/week in 3 divided doses and titrated to achieve a target Hb of 8 g/dl. Follow-up was 24 weeks. The final Hb was 8.7 +/- 0.8 g/dl. The peak epoetin dose was 196 +/- 86 IU/kg/week with a maintenance dose of 141 +/- 71 IU/kg/week. Therapy was associated with hypertension--5 patients (32%); seizures--1 patient (6%) (withdrawn from therapy), and temporary iron deficiency--4 patients (35%). Iron deficiency was corrected with oral therapy. There was 1 treatment failure. Comparable conventional regimens use 100-200 IU/kg to maintain the Hb at 10-13 g/dl and have a similar incidence of side effects. We concluded that reducing the target Hb in order to decrease epoetin requirements is not justified as it offers no benefit over conventional Hb targets in terms of dose requirements or side effects.