How many different professionals should be involved in a comprehensive ADHD evaluation?

Guidelines recommend at least two qualified providers—typically a primary care physician or pediatrician and a mental‑health specialist (psychologist, psychiatrist, or neuropsychologist)—to gather medical history, conduct behavioral rating scales, and rule out mimicking conditions.

After completing the questionnaires, how long does it usually take to receive a definitive ADHD diagnosis?

Most clinics schedule a follow‑up interview within 1‑3 weeks; the final diagnosis is often made after reviewing rating scales, clinical interview, and collateral reports, so the overall process typically takes 2‑4 weeks.

What documents or information should I bring to my ADHD screening appointment?

Bring school or work performance reports, recent report cards, teacher or supervisor rating forms, a list of current medications, a detailed symptom diary, and any prior psychological or neuropsychological test results.

Can ADHD screening reliably distinguish ADHD from anxiety or depression?

Screening tools include items that assess mood, anxiety, and oppositional behaviors, and clinicians use separate validated questionnaires (e.g., PHQ‑9, GAD‑7) alongside ADHD scales. A thorough interview helps differentiate primary ADHD from mood or anxiety disorders, though sometimes a trial of treatment is needed for clarification.

ADHD Screening

ADHD screening is a comprehensive evaluation that helps determine whether a child, teen, or adult has attention deficit hyperactivity disorder, guiding appropriate treatment.

Overview

ADHD screening, also called ADHD testing, helps find out if a child, teen, or adult has ADHD. It is used to check for ADHD in people who have frequent, serious problems with attention, hyperactivity, and/or impulsive behavior. The screening also checks for other mental disorders that often occur with ADHD and can be mistaken for it.

There are three types of ADHD:

Mostly Inattentive ADHD. People with this type have trouble paying attention and are easily distracted. They find it hard to organize or finish tasks, follow instructions, or conversations.
Mostly Hyperactive-Impulsive ADHD. People with this type have symptoms of both hyperactivity and impulsivity:
- With hyperactivity, they feel a need to always be moving, have trouble sitting still, and may fidget or talk too much.
- With impulsivity, they have trouble controlling their actions and words, often act on sudden ideas or feelings without thinking about the possible results, interrupt others, or have trouble waiting their turn.
Combined ADHD. People with this type have a mix of inattentive and hyperactive-impulsive symptoms. Combined ADHD is the most common type.

People with ADHD have more severe symptoms that cause serious problems, such as failing grades for a child or a job loss for an adult. The symptoms are ongoing and may affect family and social life.

There is no single test to show whether a person has ADHD. Instead, a health care provider follows professional guidelines for gathering information, doing tests, and diagnosing the cause of a person's symptoms. Treatment is available to help people of all ages who have been diagnosed with ADHD.

Other names: ADHD test

When Screening Is Needed

Your child may need screening if you, a teacher, or another caregiver thinks your child has symptoms of ADHD. Adults who have had challenges since childhood (before age 12) with focusing, impulsive behavior, restlessness, and/or being organized can ask their providers if they need to be screened for ADHD. The symptoms depend on the type of ADHD a person has.

Attention Problems

People with symptoms of attention problems may often:

Miss details or make careless mistakes in schoolwork, at work, or in other activities
Have trouble staying focused on play activities or work tasks
Not seem to listen when spoken to directly
Find it hard to follow instructions or finish tasks, or may start but get easily sidetracked
Have trouble being organized, keeping belongings in order, and managing time
Avoid doing tasks that require long periods of mental effort
Lose important items, such as books, wallets, keys, eyeglasses, and cellphones
Forget about doing daily activities

Hyperactivity-Impulsivity

People with symptoms of hyperactivity-impulsivity may often:

Fidget and squirm while seated
Get up when staying seated is expected, such as at school or work
Run around or climb when it's not appropriate (children) or feel restless (teens and adults)
Have trouble doing quiet activities
Be constantly moving or "on the go"
Talk much more than is normal
Blurt out answers before questions are completed
Have trouble waiting for their turn
Interrupt others for example during conversations or games

Combined ADHD

People with combined ADHD show a mix of inattention and hyperactivity-impulsivity symptoms.

What Happens During an ADHD Screening?

The general screening process is similar for people of all ages. It involves several steps. A primary care provider may do the entire screening or refer the person to a mental health provider. A mental health provider is a health care professional who specializes in diagnosing and treating mental health problems.

During an ADHD screening, the provider will:

Do a physical exam. An exam by a primary care provider checks for certain health conditions that can cause symptoms similar to ADHD. The exam may include vision and hearing tests (for children and adults), thyroid tests, and other tests.
Review medical history, family health history, and other records. The cause of ADHD isn't known, but it often runs in families. So, family history is important. The results of any past tests and school reports provide valuable information, too. For adults, old school records can help a provider find out if symptoms began in childhood.
Gather information using standardized ADHD symptom checklists, questionnaires, and/or interview questions. A provider will use one or more tools to gather, organize, and evaluate information during an ADHD screening. These tools have rating scales (scoring systems) that help the provider see if a person's symptoms and history fit a diagnosis of ADHD. The provider will use these tools to:
- Interview the person about their symptoms. For children, questions and activities are geared toward their age. Parents are usually interviewed, too.
- Gather information from others. To make a diagnosis, it's necessary to know how the person acts during different activities and situations. So, the provider may request permission to ask others for information. These people may include:
  - For children and teens: Teachers, babysitters, coaches, and other family members who spend time with the child. Parents may also complete checklists and/or questionnaires.
  - For adults: Family members who know the person from childhood, and spouses, friends, and co-workers.
Screen for other mental health disorders. People who have ADHD often have other mental health disorders. It's also possible that another disorder, and not ADHD, is causing symptoms. So, mental health screening tests are often done as needed to check for conditions such as anxiety, depression, and bipolar disorder. Children and may also be tested for learning disabilities, autism spectrum disorder, or behavior disorders.

Preparation for Screening

You usually don't need any special preparations for an ADHD screening. Your provider will let you know what health and school records you may need to gather.

Risks of Screening

There is no risk to a physical exam, written test, or questionnaire.

Results and Diagnosis

The provider will usually write up the results of an ADHD screening in a report that includes a diagnosis. To diagnose ADHD, the screening must find all of these things:

Several symptoms of ADHD that began before age 12.
Several symptoms of inattention and/or hyperactivity-impulsivity that have lasted for at least 6 months and cause serious problems. To be diagnosed with ADHD:
- Children up to age 16 must have at least 6 ongoing symptoms.
- People 17 and older must have at least 5 ongoing symptoms.
Symptoms that happen in 2 or more settings, for example, at home and at work or school.
Symptoms that clearly get in the way of functioning well at school, work, and/or in social situations.
Symptoms aren't caused by another mental health disorder.

If there is a diagnosis of ADHD, the report will include the type of ADHD (inattentive, hyperactive-impulsive, or combined). It will also say whether ADHD is mild, moderate, or severe. Any other disorders that may have been found will be included in the report.

There's no cure for ADHD, but treatment may help reduce symptoms. Treatment may include medicine, talk therapy, behavioral therapy, and lifestyle changes. Usually, two or more treatments are combined. Parents of children with ADHD may also receive training to help their children manage ADHD.

Learn more about laboratory tests, reference ranges, and understanding results.