Background: Biochemical abnormalities have been associated with sickle cell disease. Studies on phosphorus and magnesium in sickle cell disease have been conflicting. There is paucity of information on the role of these ions in the pathogenesis and management of sickle cell disease. This study was set out to determine the serum levels of magnesium, phosphorus and calcium in Nigerian children with sickle cell disease.

Study design: A case-control study carried out on children with HbSS genotype (cases) and age-matched controls with HbAA. Serum magnesium, calcium, phosphorus and albumin were measured using colorimetric methods.

Results: Eighty-six subjects and forty-five controls were studied. The mean serum magnesium was 0.99mmol/L (0.02) and 0.98mmol/L (0.02) in the cases and controls respectively. The difference was not significant. Mean serum calcium was significantly lower in the cases [2.1mmol/L (0.3)] compared with the controls [2.3mmol/L (0.15)]; p