Medical Definition of gastrointestinal series
: fluoroscopic and radiographic examination of all or part of the gastrointestinal tract and the esophagus during or following the ingestion or injection of a solution of barium sulfate
especially
: upper gi series
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“Gastrointestinal series.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/gastrointestinal%20series. Accessed 16 Oct. 2021.
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