The amount of time required to do neuropsychological testing can vary tremendously, depending on the nature of the problem and the age of the individual being evaluated. For instance, assessing someone who is 80 or 90 years old, in frail health and may have dementia will typically require a much shorter evaluation, such as perhaps just 2 hours or so. Compare that to assessing a teenager who is energetic and who is accustomed to taking tests in school. A teen may accept 6-8 hours of evaluation, which could be spread out over two or more sessions. The cost of such an evaluation also varies widely. Insurance will often cover most of the cost if it has been preauthorized. There are situations, such as when done as part of a lawsuit like those arising in car accidents, where insurance may not cover the cost. In those instances, with a lengthy evaluation the cost can be as high as $1500. to $2500.