Neurotoxicity is assessed using a combination of clinical evaluations, laboratory tests, and neuroimaging techniques. Clinical evaluations involve neurological examinations and cognitive tests to identify impairments. Laboratory tests may include blood and urine analysis to detect specific neurotoxicants. Neuroimaging techniques, such as MRI or CT scans, can visualize structural changes in the brain and other parts of the nervous system. In research settings, animal models are often used to study the mechanisms of neurotoxicity and evaluate potential therapeutic interventions.