Trait
Fructose intolerance
Reduced intestinal absorption of fructose. Breath testing after ingestion of fructose has been widely adopted as a standard method of identifying fructose malabsorption and intolerance. A dose of 25 g of fructose dissolved in a 10% solution is generally accepted as the appropriate dose of fructose for clinical use of H2 and CH4 breath testing. High levels of hydrogen in exhaled breath subsequent hours indicate fructose intolerance. Presence of malabsorption and reproduction of symptoms during a breath test provides the best objective evidence and symptom correlation for fructose intolerance.
Summary
- Also called
- Fructose malabsorption
- Body system
- Laboratory abnormality
Reference genomeGRCh38hg38
Positions on gene and variant pages follow this choice, in this browser.
Read the genes linked to Fructose intolerance, and the rest of your genome, with one test.
From $449Free shipping · Results in 6–8 weeks
Get my Genome Test1 gene linked to Fructose intolerance
Changes in these genes cause rare conditions in which Fructose intolerance is seen. Most people with this trait have none of those conditions, and a gene on this list says nothing about anyone's own genome.
| Gene | How often it is seen | Conditions |
|---|---|---|
| ALDOBaldolase, fructose-bisphosphate B | Not recorded | In 1 condition |
How often is among people with one of the gene's conditions, the most often across them, as the Human Phenotype Ontology records it. These pages describe traits and the research behind them; they are not a diagnosis, and a doctor or genetic counsellor is the person to ask about symptoms.
Broader traits
Where this comes from
- The Human Phenotype Ontology, release 2026-09-01: the trait, its names, its definition and the genes linked to it. Find out more at hpo.jax.org.
- Data release 2026.10.16-c6eea6bf.
One test. A lifetime of answers.
From $449Free shipping · Results in 6–8 weeks