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Interpretation Provides information to assist in interpretation of the test results. Normal serum zinc is 0.66 to 1.10 mcg/mL. Burn patients with acrodermatitis may have zinc as low as 0.4 mcg/mL; these patients respond quickly to zinc supplementation.
The tolerable upper intake level, or UL, is the maximum amount of a nutrient that a human can consume without suffering potentially dangerous side effects. This means that, for an adult, taking more than 40 milligrams of zinc daily is too much. For children between 9 and 13 years of age, more than 23 milligrams of zinc is too much. Adolescents between 14 and 18 years should not consume more than 34 milligrams daily.