title: A comparison of stable and  14 C-labelled polyethylene glycol as volume indicators in the human jejunum.
abstract: Polyethylene glycol (PEG plus (14)C-PEG) was measured turbidimetrically and by liquid scintillation counting to compare the validities of these methods during the use of PEG as a volume indicator of intestinal perfusion studies in man. Use of (14)C-PEG results yielded similar estimates of water absorption or secretion. The simplicity of (14)C counting offers practical advantages to the use of (14)C-PEG as a nonabsorbable marker for perfusion studies in man.
mesh_terms: D001647:Bile Acids and Salts / Q000494:pharmacology; D002247:Carbon Isotopes; D003720:Densitometry; D006018:Glycols; D006801:Humans; D007408:Intestinal Absorption; D007583:Jejunum / Q000378:metabolism*; D011095:Polyethylenes; D013053:Spectrophotometry; D014867:Water / Q000378:metabolism*
chemical_list: D001647:Bile Acids and Salts; D002247:Carbon Isotopes; D006018:Glycols; D011095:Polyethylenes; D014867:Water