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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.
1 Preconception â Between the ages of 14 and 18 you need 9 milligrams of zinc a day. Between 19 and 50 years of age, you should get 8 milligrams of zinc a day.  Pregnancy â During pregnancy you need more zinc and should get 11 milligrams a day, 13 milligrams if you are 18 years old or younger.