At a Glance
Why Get Tested?
To help diagnose severe liver disease and certain genetic urea cycle disorders; to help investigate the cause of changes in behavior and consciousness; to support the diagnosis of hepatic encephalopathy and Reye’s syndrome
When to Get Tested?
When someone experiences mental changes or lapses into a coma of unknown origin; when an infant or child experiences frequent vomiting and increased lethargy as a newborn or about a week after a viral illness
A blood sample drawn from a vein in your arm
Test Preparation Needed?
You should not smoke cigarettes prior to collection of the specimen.