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  • symptom
  • The objectives of the present study were to evaluate the agreement between genetic testing of LCT C/T(-13910) and lactose H2-BT, and the diagnostic value of extended symptom assessment. (uzh.ch)
  • A symptom questionnaire for use in hydrogen breath test was developed and initially validated. (springer.com)
  • The principal symptom of lactose intolerance is an adverse reaction to products containing lactose (primarily milk), including abdominal bloating and cramps, flatulence, diarrhea, nausea, borborygmi, and vomiting (particularly in adolescents). (wikipedia.org)
  • Bacteria
  • In addition to increasing the volume and fluidity of the gastrointestinal contents, unabsorbed lactose entering the colon is affected by bacteria. (aafp.org)
  • enzyme
  • The enzyme activity and the transit time of lactose through the jejunum mucosa are important for proper absorption. (aafp.org)
  • adulthood
  • The ability to digest lactose into adulthood evolved in several human populations independently probably as an adaptation to domestication of dairy animals 10,000 years ago. (wikipedia.org)
  • diagnosis
  • In conclusion, genetic testing has an excellent agreement with the standard lactose H2-BT, and it may replace breath testing for the diagnosis of LD. (uzh.ch)
  • Accurate diagnosis of lactose intolerance can significantly relieve patient anxiety and avoid inappropriate investigation and treatment. (aafp.org)
  • Hydrogen breath testing with measurement of orocecal transit for diagnosis of small bowel bacterial overgrowth. (uzh.ch)