QB Check: Objective Data for ADHD Care
A 15 to 20 minute computer-based test that measures attention, activity level, and impulsivity. Dr. Pierre-Louis uses it alongside your interview and rating scales to support diagnosis and to see how treatment is working.
- FDA-cleared aid
- Ages 6 to 60
- 15 to 20 minutes
- In clinic or remote
An ADHD assessment has three parts
A diagnostic assessment for ADHD brings together a clinical history from an interview, an objective measurement of symptoms, and one or more rating scales. QB Check is the objective measurement, so your care team is not relying on conversation and questionnaires alone.
Dr. Pierre-Louis talks with you, or with you and your child, about history, daily life, and what you have noticed.
Structured questionnaires that capture how symptoms show up in everyday life. Your responses are reviewed alongside the QB Check report.
A 15 to 20 minute computer task that measures attention, impulse control, and movement, then compares the results with people of the same age and sex.
How it works
What QB Check measures
QB Check is a CE-marked, FDA-cleared test of the three core areas of ADHD. You complete a simple on-screen attention and impulse-control task while your laptop's built-in webcam tracks your movement, so activity is measured rather than estimated.
How much you move during the test. The webcam tracks your movement, which helps show whether hyperactivity is present.
Whether you keep up with the task. The report looks at missed responses and how steady your reaction times are over the full test.
Whether you respond when you should hold back. Responses to the wrong prompt show up as impulsive errors.
In our clinic or from home
QB Check is the same 15 to 20 minute task whether you take it in our Las Vegas office or remotely. Dr. Pierre-Louis will help you decide which option fits you best.
Children ages 6 to 11 take QB Check in our clinic. For children, it helps to explain that the task is done on a computer and is not designed to be exciting.
Taking QB Check from home
Remote testing is available for ages 12 to 60. Children ages 6 to 11 are tested in our clinic. A little preparation keeps your results accurate and helps you avoid repeating the test.
- A Windows laptop or computer, or a MacBook, with a built-in webcam
- Google Chrome or Microsoft Edge only
- Plugged into power, with power settings on "High Performance" instead of battery mode
- A working internet connection
- All other browsers and programs closed
QB Check does not work on smartphones, iPads, Chromebooks, or Surface devices.
- A quiet room, with your personal devices turned off
- Your face evenly lit. Avoid direct sunlight, and keep bright windows or mirrors out from behind you
- A sturdy chair with a backrest but no armrests or wheels. Avoid sofas and chairs that swivel, move, or recline
- Your face fully visible. Hats, scarves, and facial piercings can cause problems, but glasses are fine
Go to qbcheck.com, select Start Test, and enter your voucher code (it is case sensitive). You will then move through:
- Prepare: 12 simple instructions to get ready
- Rating scale: rate your own behavior
- Computer check: seating, lighting, and your setup
- Instructions: the task explained in detail
- Ability test: a 1 minute practice
- Real test: the full 15 or 20 minutes
- Report: your results are uploaded
The test stops by itself after 15 or 20 minutes and cannot be paused, so please allow extra time for setup. Quitting partway makes the results invalid, and we may ask you to repeat the test. If you are interrupted or run into a technical problem, contact us and we will help you restart.
Three reasons objective data helps
ADHD can look different depending on age and sex. QB Check compares your results with a group of the same age and sex, so your symptoms are measured against the right yardstick.
ADHD symptoms can overlap with other conditions. Objective data helps show whether your pattern fits what we would expect with ADHD.
Finding the right treatment can take some trial and error. Retesting shows, in numbers, how you are responding, not just how you feel it is going.
Two ways we use it
Used alongside the clinical interview and rating scales to add objective data when symptoms are unclear or when a second data point is helpful.
Retaken after starting or adjusting treatment to see, numerically, whether attention and impulse control are improving, not just relying on self-report.
What a QB Check report looks like
- A single-page report, generated as soon as the test ends
- Five scores compared with a group of the same age and sex, covering hyperactivity, inattention, and impulsivity
- A Total Symptom Score that summarizes the overall picture
- Charts of movement and reaction time across the whole test
This is an illustrative sample, not a real patient's report.
- Try to get a good night's sleep before the test.
- Avoid excessive caffeine on the day of the test.
- If you take ADHD medication, take it as directed. How the test is timed around your dose depends on the medication, so we confirm the plan with you when you book.
- Allow extra time on top of the 15 to 20 minutes for setup, the rating scale, and a 1 minute practice test.
- For a child, explain that they will do a task on a computer that is not designed to be exciting.
The report is ready as soon as the test ends, and Dr. Pierre-Louis then interprets it together with your interview and rating scales. If you test remotely, results do not appear on your screen. We review them with you at a follow-up appointment. After a test in our clinic, you may get feedback at the same visit.
No. QB Check is an optional add-on to your evaluation or ongoing care. Dr. Pierre-Louis will let you know if it is a good fit, and it is never required to receive an ADHD diagnosis or treatment.
What the studies show
Qbtech's tests are backed by more than 40 independent studies. Here are three results that matter most for patients.
In a study of remote QbCheck testing (142 people, ages 12 to 60), the test correctly identified 83% of people with ADHD and 80% of healthy controls.
Ulberstad et al., 2020 ↗In a randomized trial of 250 children and teens, clinicians who saw QbTest results (the in-clinic version, substantially equivalent to QbCheck) were 44% more likely to reach a diagnostic decision within six months, and appointments were 15% shorter.
Hollis et al., 2018 ↗Across 114 patients ages 7 to 60 retested with QbCheck after starting ADHD medication, the average Total Symptom Score fell by 42%.
Sanyal et al., 2024 ↗QB Check is an aid, not a stand-alone diagnosis. Qbtech's own documentation notes that some studies found it less able to tell ADHD apart from other clinical conditions. That is why Dr. Pierre-Louis reads your results together with your interview and rating scales.
- End-to-end encryption
- Two-factor authentication
- ISO 27001 certified
How to sign up for QB Check
Book an appointment online or call (702) 843-5015 and tell us you are interested in QB Check.
You will get an email with the cost, payment options, and next steps, so you know what to expect before you go ahead.
After your payment is confirmed, we send your intake paperwork and QB Check educational materials, plus your testing link if you are testing remotely.
Common questions about QB Check
Ready when you are. No pressure.
We respond to new patient requests within 1–2 business days.
"My goal is to make sure you never feel alone in this. From your first message to your ongoing care, we're here with you every step of the way."