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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 human body contains 2-3 grams (2000-3000 milligrams) of zinc. Much of it is found in the adrenals, brain and eyes. Since the majority of zinc is stored inside cells and is not free in the blood, blood tests for zinc deficiency are notoriously inaccurate (most physicians are unaware of this).