CAR-T cell-associated neurotoxicity comprises a wide range of signs and symptoms along with a variable onset range from days to weeks. The development of sensitive and specific methods for the early detection of severe neurotoxicity along with the identification of long-term impacts on cognitive abilities is critical. The tests within NeurCare can be self-administered by the patient over long periods of time and their tests results can be immediately reviewed by physicians to help in the early detection of neurotoxicity.