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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.
Normal TSH levels for the average adult range from 0.4 â 4.0 mIU/L (milli-international units per liter) (3). However, many organisations agree that a reading of 2.5 or less is truly ideal, with anything 2.5 â 4.0 mIU/L considered âat riskâ. For those on thyroxine, goal TSH level is between 0.5 to 2.5 mU/L.