What Tests Are Ordered When Evaluating for Dementia?

Dementia evaluation starts with careful listening: what has changed, when it started, how quickly it is progressing, and how it affects everyday life. Input from a family member or close contact is often essential, because the person experiencing the changes may not see the full picture.

Cognitive testing measures memory, attention, language, and other thinking skills against age-adjusted expectations. The neurological examination looks for additional clues—changes in movement, reflexes, gait, or coordination—that help narrow the cause.

Laboratory studies look for reversible or contributing problems such as thyroid disorders, vitamin deficiencies, infections, and metabolic conditions. Brain imaging—most often MRI or CT—checks for stroke, structural changes, or other findings and helps characterize the pattern of change. In selected patients, more specialized testing such as neuropsychological evaluation, spinal fluid studies, or biomarker testing may be appropriate.

Which tests are ordered depends on the individual: the symptoms, their tempo, the examination, and the questions that remain. No single test diagnoses dementia, and the goal is always to identify treatable contributors and give the patient and family a clear, accurate picture.