There is no way to determine ADHD through brain tests (such as head CT or MRI) and blood tests, and although it has been stated that the cause of ADHD is a change in the concentration of some chemicals in the brain, there are no conventional medical tests that can directly and accurately test the concentration of these chemicals. Yang Liangzheng, Child Health Care Institute, Jinan Children’s Hospital Therefore, it is especially important that parents need to take their child to an experienced, qualified and professionally trained doctor to obtain an evaluation and diagnosis of their child. Generally speaking, child psychiatrists, child psychologists, and developmental pediatricians at regular hospitals can help you determine whether your child’s behavior is ADHD, or whether it is generally mischievous or childishly immature. The doctor will ask the parents a lot of questions about the child’s behavior, and then recommend that the child complete some relevant tests, such as an EEG to rule out physical problems, some questionnaires to assess the child’s usual condition, as well as an attention test, and possibly an intelligence test to evaluate the child’s learning potential and to observe the child’s attention while completing tasks. Finally, the doctor will evaluate the child’s performance in the office and the child’s performance in the tests based on the parent’s report and the teacher’s response, and will conclude whether the child has ADHD.