Quick Answer
Qbtest is a CE-marked, FDA-cleared continuous performance test that objectively measures three core ADHD dimensions over 15 to 20 minutes: attention (sustained focus), impulsivity (response control), and activity (motion tracking via an infrared marker on the head). Results are compared against age- and sex-normed reference groups. It's an objective add-on to the clinical interview and rating scales — not the entire diagnosis on its own, but a valuable piece of evidence.
This question comes up frequently for patients researching adhd testing & treatment (qbtech) at Good Health NC in Knightdale, NC.