Bipolar Disorder Practice Test 2026 – Complete Exam Prep

There isn't a clinically validated imaging biomarker for diagnosing bipolar disorder. While research shows group-level differences in brain structure and function between people with bipolar disorder and controls (and sometimes relative to other mood conditions), these findings are not specific or reliable enough to diagnose an individual. Factors like illness phase, medications, comorbidities, and differences in imaging methods create a lot of variability, so no imaging test has proven sensitivity and specificity adequate for routine clinical use. Imaging can be helpful for research, prognosis, or monitoring in some contexts, but it cannot currently replace clinical assessment for diagnosis. The other options would imply a level of diagnostic accuracy that current evidence does not support.