title: [Exhaled hydrogen test in the detection of lactase deficiency].
abstract: To determine the validity of breath H2 measurements in detecting lactase deficiency, capillary blood glucose and breath H2 were measured after ingestion of 50 g lactose in 34 patients with abdominal symptoms or diarrhea. 18 patients had biopsy-proven lactase deficiency and 16 normal lactase activity. Blood glucose determination produced 2 false-positive results while breath H2 measurements provided 2 false-negative and 4 false-positive results.
mesh_terms: D000328:Adult; D000368:Aged; D001706:Biopsy; D001786:Blood Glucose / Q000032:analysis; D001944:Breath Tests; D005188:False Negative Reactions; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D006859:Hydrogen / Q000032:analysis*; D007583:Jejunum / Q000378:metabolism; D007787:Lactose Intolerance / Q000175:diagnosis* / Q000378:metabolism; D007789:Lactose Tolerance Test; D008297:Male; D008875:Middle Aged; D013997:Time Factors
chemical_list: D001786:Blood Glucose; D006859:Hydrogen
vernacular_title: Test de l'hydrogène expiré dans la détection des hypolactasies.