The absorption and excretion of zinc

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Abstract
45 Zn balances, each lasting about 14 days, were carried out on 12 normal persons and on patients. Zn was injected intraven. into 10 of them in amts. up to 6.2 mg. daily for 14 days. Normal persons excreted about 0.3 mg. per day in the urine; this amt. did not vary with the intake by mouth, nor was it appreciably raised by intraven. injs. Patients with al-buminuria excreted about 7 times the normal amt. in urine. Within the limits of exptl. error, normal adults excreted almost the same amts. of Zn in their feces as they ingested in their food. Some adults excreted additional Zn in their feces when the metal was injected intraven.. others did not.