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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.
2) Lowered immune function. Ironic that adequate zinc intake is often said to improve your immune system, but on the other hand too much of this trace mineral can have the opposite effect. Taking high doses of zinc around 200-400 mg/day can have disastrous side effects and one of them is impaired immune function. Zinc is a healthy mineral and supplementation is a healthy choice if need be; 2  Get the right dosage and type of supplement; 3  Having a little too much of this trace mineral in your system cause mild side-effects that go away quickly; 4  Overdosing on this supplement is extremely dangerous and should be taken seriously.