Fujifilm Wako offers ELISA kits for use in research on neurological diseases, including kits for measurement of amyloid β (Aβ) and tau accumulation in the brain of patients with Alzheimer's disease, which is the most frequent cause of dementia, and for orexin, which is said to be the cause of narcolepsy. An ELISA kit for measuring brain-derived neurotrophic factor (BDNF), a candidate marker of psychiatric disorders, is also available.