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Positive lactose hydrogen breath test

MedGen UID:
1841971
•Concept ID:
C5826848
•
Laboratory or Test Result
HPO: HP:4000100

Definition

Elevated hydrogen gas level in exhaled breath following oral administration of lactose. In individuals with lactose intolerance, undigested lactose in the colon will be metabolized by colonic bacteria, releasing hydrogen gas. [from HPO]

Term Hierarchy

CClinical test,  RResearch test,  OOMIM,  GGeneReviews,  VClinVar  
  • CROGVPositive lactose hydrogen breath test

Professional guidelines

PubMed

Concordance of genetic and breath tests for lactose intolerance in a tertiary referral centre.
Krawczyk M, Wolska M, Schwartz S, Gruenhage F, Terjung B, Portincasa P, Sauerbruch T, Lammert F
J Gastrointestin Liver Dis 2008 Jun;17(2):135-9. PMID: 18568133
Genetic testing improves the diagnosis of adult type hypolactasia in the Mediterranean population of Sardinia.
Schirru E, Corona V, Usai-Satta P, Scarpa M, Oppia F, Loriga F, Cucca F, De Virgiliis S, Rossino R, Macis MD, Jores RD, Congia M
Eur J Clin Nutr 2007 Oct;61(10):1220-5. Epub 2007 Feb 21 doi: 10.1038/sj.ejcn.1602638. PMID: 17311063
Lactose intolerance: problems in diagnosis and treatment.
Shaw AD, Davies GJ
J Clin Gastroenterol 1999 Apr;28(3):208-16. doi: 10.1097/00004836-199904000-00005. PMID: 10192605

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