Welcome to the Mentavi
Mental Health Diagnostic Evaluation

We believe everyone should have access to
affordable mental health care that meets high clinical standards.
Adult ADHD Assessment & DiagnosisADHD OnlineTraditional In-person*
Cost$189$1,689
Wait time to take the testNone1-3 months
Wait time for diagnosis3-5 days1-3 months
Total time for test and diagnosis 3-5 days2-6 months
Assessment & Diagnosis Cost

We believe everyone should have access to an ADHD assessment that meets high clinical standards, without the high costs.

That’s why we’ve made it affordable to receive a diagnostic evaluation and treatment for ADHD from licensed psychologists.

Adult ADHD Assessment & DiagnosisADHD OnlineTraditional In-person1
Cost$189$1689
Wait time to take the assessmentNone1-3 months
Wait time for diagnosis3-5 days1-3 months
Total time for assessment & diagnosis3-5 days2-6 months

1 Costs based on annual ongoing appointments for medical treatment. ADHD Online costs include five visits in a 12-month period. Traditional in-person treatment costs are based on nationwide averages from the December 2024 survey published by ADDitude. Actual prices may vary by location and provider availability. Costs do not include medication.

Start my evaluation

Begin your mental health journey

These steps will guide you through our clinically validated evaluation and along a path to treatment.

1


Create a new account
 (we’ll ask for your email and your agreement to a few policies)

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2

Purchase the clinically validated Diagnostic Evaluation* for $189 (that’s way less than most assessments cost, and we have flexible payment options)

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3

Begin your evaluation right away! No months of waiting here. Complete it all at once, over a few days, whenever and wherever you’re most comfortable.

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4

Receive your results within 5 days (yes, days, not months!). Take your results to your doctor or explore Medical Treatment with us in these 40 states.

Diagnostic Evaluation and Mental Wellness Coaching are available in every state

Ready to get answers?

Start my evaluation

What else can we tell you?

Our clinically validated evaluation* is completely confidential and comprehensive and has been proven to accurately diagnose ADHD (with a 95.9% positive predictive value). It evaluates for ADHD as well as other mental health concerns such as anxiety and depression. And no subscription is necessary!

Licensed psychologists in our network review each evaluation and provide an ADHD diagnosis or exclusion.

Still have questions? We have answers!

*Diagnostic Evaluation is clinically validated for the diagnosis of ADHD in Adults.
Study results were published in the Journal of Clinical Psychiatry.

Curious about stimulant or non-stimulant approaches?

If you’re navigating ADHD or other mental health challenges, you have options. At Mentavi Health / ADHD Online, we assess what works for you. 
Some may start with non-medicated approaches like coaching or therapy.  In other cases, patients may explore medication treatment paths when warranted by diagnosis. For some diagnosed with ADHD, the treatment clinician may work with the patient to determine if stimulant approaches work best for them. Stimulant approaches are certain medications under medical treatment that are generally Class II controlled substances. Non-stimulant options are another approach that can work for many.  Medication approaches can be used in tandem with coaching or therapy. 
 
The key is starting with our diagnostic evaluation, which is reviewed by a qualified healthcare professional. Getting clarity on what you’re experiencing is the first step toward feeling more in control. From there, you and your treatment team can determine the best path—whether that’s coaching, therapy, medication, or a combination that works for your life. 
 
If you’re not feeling right, let us walk alongside you by starting with the diagnostic evaluation.
Start now
Take Diagnostic Evaluation
Start now
There may be a brief delay in service today between 12:30 PM and 1:30 PM ET. Thank you for your patience — we look forward to assisting you shortly.
 
The ADHD Online Team

Join Our ADHD Research Study

Mentavi Health is conducting ADHD research and is accepting a limited number of participants. Participants in our clinical study will get an ADHD Assessment at no cost. 

Who can join?
  • Age 19+
  • Primary language is English
  • Not previously diagnosed with ADHD
  • Not a current patient of ADHD Online or Mentavi Health
  • A resident of any of the 50 US states or DC (not including Puerto Rico or other territories)
 
Why participate?
Your involvement will help improve mental health care for everyone.
 
Learn more
Looking to take our assessment? That’s available all day, every day, whenever and wherever is best for you!

ADHD Online will be closed on Monday, May 26, 2025, in observance of the Memorial Day holiday.

Live support will be unavailable on Monday, May 26. Send us an email or leave a message, and we’ll get back to you as soon as possible when we return on Tuesday, May 27.

Please note that each clinician sets their holiday hours and may be processing your requests during this time or may also be out.

Live support will be unavailable during regular business hours on Monday, January 20. You can always submit a request or leave a voice message. We’ll get back to you when we return.

Please note: Our clinicians have individual holiday schedules. Check with yours for their availability during the holidays.

Looking to take our Mentavi Diagnostic Evaluation? That’s available all day, every day, whenever and wherever is best for you!

Start your Assessment
Our site is open 24/7! You can always schedule an appointment, check out our podcasts, or read up on the latest ADHD information.

ADHD Online will be closed on Thursday, November 27 and Friday, November 28 in observance of Thanksgiving.

Live support will be unavailable during this time, but you can always submit a request or leave a voice message. We’ll get back to you when we return on Monday, December 1.

Each of our clinicians sets their own holiday hours. Check with your doctor for availability.

Are you looking to take our Assessment? It’s available all day, every day, whenever and wherever is best for you! 

Start Assessment

Provide this form to your local practitioner. You could:

  • Send this link
  • Email the pdf
  • Print it out and bring it to your appointment

Ask your practitioner
to complete the form

In this form, your practitioner will request that ADHD Online continue to provide uninterrupted care

Return the form to us

You or your practitioner can return this form to us via email or fax it to 616-210-3118