ADHD Assessment - Why it's Important to Get a Private ADHD Diagnosis Anyone who suspects they be suffering from ADHD but has not been diagnosed should seek an ADHD assessment. The process can take between 2 and 3 sessions. It is recommended to bring a friend or a family member. https://johnnyktcpf.thenerdsblog.com/34840202/how-to-know-if-you-re-ready-for-adhd-diagnosis-private