Verbatim response from Perplexity
An online ADHD assessment typically costs about $150 to $900 overall, with many common options clustering around $189–$199 for a one-time assessment.[2][4][5][6][7]
A few specific examples from current providers:
- ADHD Online (Mentavi): $199 for a comprehensive assessment evaluated by a licensed psychologist.[1][6]
- ADHD Online / GoodRx listing: $189 for the assessment.[5][7]
- Siya Health: $199 flat rate for an adult ADHD evaluation.[10]
- Broader online screening services often start around $150–$300, while more extensive packages can reach $900.[2][4][11]
If you want the cheapest route, a screening-only service may be under $200.[2][4] If you need a more formal diagnostic assessment with a written report, expect closer to $199–$900, depending on the provider and what’s included.[1][3][10][11]
If you want, I can also compare which online ADHD assessments are cheapest, best for adults, or most likely to be accepted for diagnosis/medication.