Elevated Unconjugated Bilirubin in Schizophrenia Compared to Bipolar Affective Disorder.

Objective: The evidence linking schizophrenia and total and unconjugated bilirubin is primarily from retrospective studies. To overcome this limitation, we conducted a prospective study of total and unconjugated bilirubin levels of patients diagnosed with schizophrenia or bipolar affective disorder.

Methods: Serum total and unconjugated bilirubin levels were compared between patients diagnosed with schizophrenia (n = 50) and bipolar affective disorder (n = 43) (ICD-10 criteria) admitted to an inpatient psychiatric unit of a tertiary hospital in India.