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Does the ALTERNATE SOURCE variable allow the input of different bioavailability values for intake?

April 26, 2017alternate bioavailability different input intake source values

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Does the ALTERNATE SOURCE variable allow the input of different bioavailability values for intake?

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The ALTERNATE SOURCE variable allows the user to change from the default value (0%) to 50% by selecting YES for CHANGE GI VALUES/BIOAVAILABILITY. After selecting YES, the user is notified about changing default values only with adequate and defensible site-specific data. The user is also advised to consult the Technical Support Document for the Integrated Exposure Uptake Biokinetic Model for Lead in Children [NTIS #PB94-963505, EPA 9285.7-22] (December 1994), available from the Software and Users’ Manuals page, for a description of bioavailability. The user should select the ESCAPE key (Esc) to access the next screen, where changes to the bioavailability of the alternate source variable can be made. Select ESCAPE again to return to the initial screen. A HELP screen is available to further assist the user.