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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.
To avoid the adverse effects related to taking too much zinc, keep from taking the tolerable upper limit for zinc. For males and females ages 9 to 13 years, the tolerable upper limit is 23 mg per day. If you are ages 14 to 18 years, 34 mg is the limit, while 40 mg is the limit if you are older than age 19.