Diagnosis

Your doctor may suspect Gilbert's syndrome if you have unexplained jaundice or if the level of bilirubin is elevated in your blood. Other signs and symptoms that suggest Gilbert's syndrome as well as a number of other liver conditions include dark urine and abdominal pain.

To rule out more-common liver conditions, your doctor may order a complete blood count and liver function tests.

The combination of normal blood and liver function tests and elevated bilirubin levels is an indicator of Gilbert's syndrome. No other testing usually is needed, although genetic testing can confirm the diagnosis.