Serum zinc, copper and magnesium levels were determined before and after antigiardia treatment in 30 children (between 2.5-13 years of age) with symptomatic giardiasis by atomic absorption spectrophotometry (AAS). Before the treatment, serum zinc, copper, and magnesium levels were 66.38±19.6 pg/dl, 96.4±24 pg/dl and 2.7±0.3 mg/dl, respectively. After the treatment (with metronidazole 20 mg/kg/day for 10 days), serum zinc, copper, and magnesium levels were 70.7± 19.2 pg/dl, 84.2± 16.4 pg/dl and 2.0±0.3 mg/dl, respectively. After the antigiardia treatment, serum copper concentrations were found significantly low (p
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