SeHCAT
Citation, DOI, disclosures and article data
Citation:
Little D, Murphy A, Bell D, et al. SeHCAT. Reference article, Radiopaedia.org (Accessed on 21 Mar 2025) https://doi.org/10.53347/rID-39306
rID:
39306
Article created:
30 Aug 2015,
David Little ◉
Disclosures:
At the time the article was created David Little had no recorded disclosures.
View David Little's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Andrew Murphy had no recorded disclosures.
View Andrew Murphy's current disclosures
Revisions:
6 times, by
5 contributors -
see full revision history and disclosures
Systems:
Sections:
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Synonyms:
- 23-seleno-25-homo-tauro-cholic acid
SeHCAT™ (23-seleno-25-homo-tauro-cholic acid or tauroselcholic acid) is a radiopharmaceutical used in the investigation of bile salt malabsorption, which is a cause of chronic diarrhoea.
Characteristics
- physical half-life: 118 days
Uses, dosage and timings
A capsule containing SeHCAT is ingested with water. The patient is scanned using a gamma camera 2-3 hours after ingesting the capsule. The patient is rescanned after 7 days and the percentage of retention is calculated.
More than 15% retention is normal and mitigates against a diagnosis of bile salt malabsorption.
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