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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.
Trials among residents of nursing homes for elderly patients have found a decrease in incidences of infections and oxidative stress markers and increases in plasma zinc levels with moderate zinc supplementation (15 to 45 mg/day).