The definitions contained in § 314.3 of this chapter apply to those terms when used in this part. 21 C.F.R. §320.1 81 FR 69658, Oct. 6, 2016 81 FR 69658, 12/5/2016
(a)Guiding principles. (1) The basic principle in an in vivo bioavailability study is that no unnecessary human research should be done. (2) An in vivo bioavailability study is generally done in a normal adult population under standardized conditions. In some situations, an in vivo bioavailability study in humans may preferably and more properly be done in suitable patients. Critically ill patients shall not be included in an in vivo bioavailability study unless the attending physician determines