Abstract
Summary
Potassium iodide mixed with radio-opaque media was administered orally to human subjects studied under fluoroscopic control. Iodide appeared in saliva of these subjects 2-4 minutes after mixture passed into the duodenum. Iodide instilled directly into the duodenum of 2 subjects was detected in their saliva 3-4 minutes later. 14.9% of the iodide placed in the stomach and 48.9% of the iodide placed in the duodenum of rats was absorbed within one hour. It appears that the small intestine is the principal site of absorption in humans and in rats.
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