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SeHCAT scan to test for bile acid malabsorption

A test for patients with chronic diarrhoea and suspected bile acid malabsorption

Coronavirus: nuclear medicine update

In response to the coronavirus (COVID-19) outbreak, please read our advice and information before attending or referring to the service.

Bile acid malabsorption

Our department offers the gold standard test for patients who have chronic  diarrhoea and suspected symptoms of bile acid malabsorption (BAM). BAM is a perfectly treatable condition, and if diagnosed, we can improve patients' symptoms dramatically with simple treatment.


GPs should consider making a referral to the nuclear medicine service if a patient has the following symptoms:

  • diarrhoea heavy IBS
  • fat induced diarrhoea
  • diarrhoea post cholecystectomy
  • no other alarm symptoms.

To refer patients, you can email or send your request via post:

Nuclear medicine department, 1st floor, Lambeth Wing, St Thomas' Hospital, SE1 7EH.

If you have any queries about the referral criteria, you can also email Dhruba Dasgupta, consultant nuclear medicine:

If you require more information regarding SeHCAT scan, please call Guy’s Hospital Nuclear Medicine: 020 7188 4112.

More information for patients

Please read our leaflet about the SeHCAT scan to test for bile acid malabsorption (PDF 102Kb). This will provide you with more information about what to expect during your appointment.