title: (13)C mixed triglyceride breath testing using infrared spectrometry: comparison of two devices in early infancy.
abstract: The (13)C mixed triglyceride (MTG) breath test has been proposed for the non-invasive assessment of fat digestion and absorption. To evaluate whether reference values for the adequacy of fat absorption, set in the non-dispersive infrared spectrometry (NDIRS) system software proposed for healthy children and adults using the (13)C MTG breath test, are also applicable to infants of <5 months of age.
  
  
  
  (13)C MTG breath testing with the NDIRS technique was performed in 54 healthy infants <5 months of age (38 breast-fed, 16 formula-fed) and six infants diagnosed with cystic fibrosis (CF) using two NDIRS devices, IRIS and FANci2.
  
  
  
  The IRIS results were slightly higher compared with those assessed by the FANci2 device. The minimum cutoff value for pancreatic sufficiency (PS) is set as a cumulative percentage dose of (13)C recovered (cPDR) after 5 h of 13.0%. Pancreatic function status of six CF infants, three with PS and three with pancreatic insufficiency (PI), according to the 72 h-faecal fat balance test could be correctly determined with the (13)C MTG breath test using two NDIRS techniques. However, if these reference values had been used to determine pancreatic function status in healthy infants, 26 out of 54 infants would have been misclassified as pancreatic insufficient.
  
  
  
  Although the (13)C MTG breath test with the MS technique has the potential to be a suitable assessment of fat absorption in infants, the technique of NDIRS appears too insensitive in an infant population group.
authors.affiliation: James Fairfax Institute of Paediatric Nutrition, University of Sydney, and The Children's Hospital at Westmead, Locked Bag 4001, Westmead, Sydney, NSW 2145, Australia.
authors.forename: D S
authors.initials: DS
authors.lastname: Kent
authors.affiliation: IEL-Nutritional Epidemiology, University of Bonn, DONALD Study at the Research Institute of Child Nutrition, Dortmund, Germany.
authors.forename: T
authors.initials: T
authors.lastname: Remer
authors.affiliation: James Fairfax Institute of Paediatric Nutrition, University of Sydney, and The Children's Hospital at Westmead, Locked Bag 4001, Westmead, Sydney, NSW 2145, Australia.|Storr Liver Unit and Department of Nutrition and Dietetics, Westmead Hospital, Hawkesbury Rd, Westmead, NSW 2145, Australia.
authors.forename: C
authors.initials: C
authors.lastname: Blumenthal
authors.affiliation: James Fairfax Institute of Paediatric Nutrition, University of Sydney, and The Children's Hospital at Westmead, Locked Bag 4001, Westmead, Sydney, NSW 2145, Australia.
authors.forename: K J
authors.initials: KJ
authors.lastname: Gaskin
mesh_terms: D065567:Absorption, Physiological; D001944:Breath Tests / Q000379:methods*; D016022:Case-Control Studies; D003550:Cystic Fibrosis / Q000150:complications / Q000378:metabolism*; D010188:Exocrine Pancreatic Insufficiency / Q000175:diagnosis* / Q000209:etiology; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D010179:Pancreas / Q000503:physiopathology; D012016:Reference Values; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013055:Spectrophotometry, Infrared / Q000295:instrumentation* / Q000379:methods; D014280:Triglycerides / Q000032:analysis*
chemical_list: D014280:Triglycerides