Fractional absorption in the gastrointestinal tract
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The fraction of an element directly absorbed from the alimentary tract into blood, referred to as the gut transfer factor, and designated as f1 in the ICRP Publication 30 gastrointestinal tract model and fA in the revised ICRP Publication 100 Human Alimentary Tract Model.
(Adapted from ICRP Publication 130, 2015)
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from ICRP Publication 119, 2012
The f1 value is the fraction of an ingested element absorbed directly into body fluids.
