This is not correct. At least not in the U.S. as a whole. It may of course be true where you are. The DSM does not even suggest an IQ test as part of the diag

This is not correct. At least not in the U.S. as a whole. It may of course be true where you are. The DSM does not even suggest an IQ test as part of the diagnostic. Knowing 6+ people in several states with ADHD diagnoses (some as children, some as adults) none have had anything beyond questions with their physician… or diagnoses by a psychiatrist after starting therapy for a different issue. https://www.cdc.gov/ncbddd/adhd/diagnosis.html https://www.cdc.gov/ncbddd/adhd/diagnosis.html https://www.ncbi.nlm.nih.gov/books/NBK519712/table/ch3.t3/ https://www.ncbi.nlm.nih.gov/books/NBK519712/table/ch3.t3/ https://add.org/adhd-dsm-5-criteria/ https://add.org/adhd-dsm-5-criteria/