Screening for ADHD typically starts with a short questionnaire that flags whether your symptoms warrant a full clinical evaluation. The most widely used tool for adults is a six-question checklist you can complete in under five minutes, but a positive screen is not a diagnosis. Getting from “I think I might have ADHD” to a confirmed answer involves a specific sequence: a validated screening tool, a structured clinical interview, and ruling out conditions that mimic ADHD symptoms.
Self-Screening Tools for Adults
The Adult ADHD Self-Report Scale (ASRS), developed through a collaboration with the World Health Organization, is the standard starting point. The screener version has just six questions about how often you lose track of things, have trouble sitting still, feel restless, or struggle to wrap up final details on projects. Each question is rated from “never” to “very often.”
There are two ways to score it. The simpler method converts your answers into a 0 to 6 scale, where a score of 4 or higher counts as a positive screen. A more granular scoring system adds up your responses on a 0 to 24 scale, with 14 or higher as the cutoff. Either way, a positive result means the next step is a professional evaluation, not that you have ADHD. The screener is designed to cast a wide net so fewer cases get missed.
Screening Children and Teens
For children, screening usually begins when a parent or teacher notices persistent problems with focus, impulsivity, or hyperactivity. Pediatricians often use parent and teacher rating scales that ask about specific behaviors across settings. The diagnostic bar for children up to age 16 is six or more symptoms in either the inattention category or the hyperactivity/impulsivity category. For teens 17 and older and adults, the threshold drops to five symptoms.
The symptoms must have been present for at least six months and be clearly out of step with what’s expected for the child’s developmental stage. A five-year-old who can’t sit still for an hour-long lecture isn’t showing a symptom; a ten-year-old who consistently can’t follow two-step instructions that peers handle easily might be.
What a Full Evaluation Looks Like
A screening questionnaire only tells a clinician whether to dig deeper. The actual diagnostic process involves a structured clinical interview that walks through all 18 symptom criteria in the current diagnostic manual, split into two groups: inattention symptoms (difficulty sustaining focus, careless mistakes, trouble organizing tasks) and hyperactivity/impulsivity symptoms (fidgeting, interrupting, difficulty waiting your turn).
One widely used interview framework, the DIVA-5, asks about each symptom twice: first whether it’s been present in the last six months of your adult life, then whether it showed up during childhood between ages 5 and 12. This matters because a core requirement for diagnosis is that several symptoms were present before age 12. If attention problems only started in college or after a major life change, the evaluator needs to consider other explanations.
The clinician also checks whether your symptoms show up in at least two different settings, such as both at work and in your personal relationships. Difficulty concentrating only during boring meetings doesn’t meet the bar. The symptoms also need to clearly interfere with your functioning, whether that’s your job performance, your relationships, your education, or your daily life. Finally, the evaluator confirms the symptoms aren’t better explained by anxiety, depression, a mood disorder, or another condition.
Why Screening for Other Conditions Matters
ADHD rarely travels alone. Roughly 63% of adults diagnosed with ADHD have at least one additional mental health condition. The most common overlaps are generalized anxiety (affecting about 32% of ADHD patients), bipolar disorder (about 25%), and major depression (about 22%). These conditions share surface-level symptoms with ADHD: trouble concentrating, restlessness, difficulty finishing tasks, and emotional dysregulation all show up across multiple diagnoses.
This overlap is why a thorough evaluation screens for comorbid conditions alongside ADHD. Someone whose concentration problems stem primarily from untreated anxiety needs a different treatment approach than someone with ADHD. And someone who has both, which is common, benefits from knowing that so both issues get addressed. Lack of routine screening for these overlapping conditions is a major reason ADHD gets missed, delayed, or misdiagnosed in adults.
How Symptoms Present Differently in Women
ADHD screening has historically been built around the hyperactive, impulsive presentation more common in boys and men. Women and girls more often present with inattentive symptoms: daydreaming, losing track of conversations, chronic disorganization, and difficulty following through on tasks. They’re also more likely to experience what researchers call “internalizing” problems like anxiety, depression, and emotional distress rather than the “externalizing” behaviors (defiance, risk-taking, substance use) that tend to trigger screening in males.
This means women frequently get screened for depression or anxiety first, and the underlying ADHD goes unrecognized. Studies using objective performance tests show that women can appear equally impaired to men on overall questionnaire scores while actually having a more pronounced deficit in attention specifically. If you’re a woman who has been treated for anxiety or depression without much improvement, and you also struggle with focus, organization, and follow-through, bringing up ADHD screening with your provider is reasonable.
Computer-Based Testing
Some clinics use computer-based tools that measure attention, impulsivity, and physical movement during a task. The most studied of these is the QbTest, which tracks head movement with a camera while you respond to visual cues on a screen. A meta-analysis found it correctly identified people with ADHD about 78% of the time and correctly ruled out those without it about 70% of the time. Those numbers are decent but not definitive, which is why these tools supplement a clinical interview rather than replace one. They’re most useful when a clinician wants objective data to support or question what the interview suggests.
Who Can Diagnose You
A screening questionnaire can be given by anyone, including yourself. But interpreting the results and making a formal diagnosis requires a professional with training in differential diagnosis and experience with ADHD. Qualified providers include clinical psychologists, neuropsychologists, psychiatrists, and other medical doctors with relevant expertise. Some nurse practitioners and licensed clinical social workers can also diagnose ADHD depending on your state’s regulations.
Primary care doctors can screen for ADHD and often prescribe medication for straightforward cases, but complex presentations (multiple possible diagnoses, unclear symptom history, or symptoms that started later in life) typically benefit from a specialist evaluation. Wait times for ADHD assessments vary widely. Some clinics book out several months, while telehealth services have shortened access in many areas. The evaluation itself usually takes one to three hours, sometimes split across two appointments, and includes the structured interview, questionnaires, a review of your history, and sometimes input from a partner or family member who can speak to your childhood behavior.
Preparing for Your Screening
You can make the process faster and more accurate by gathering a few things beforehand. Old report cards or school records are valuable because they often contain teacher comments about attention, behavior, and work habits that document childhood symptoms you may not remember clearly. If a parent or sibling can describe what you were like as a child, that perspective helps the evaluator assess whether symptoms were present before age 12.
Write down specific examples of how your symptoms affect your daily life across different settings. “I have trouble focusing” is less useful than “I regularly miss deadlines at work, forget to pay bills until they’re overdue, and can’t follow a conversation at dinner without checking my phone.” Concrete examples in at least two life areas (work, relationships, education, self-care, finances) map directly onto what the diagnostic criteria require, and they help your evaluator distinguish ADHD from normal distraction or stress.