Our adult assessment services help you gain clarity and direction around your mental health and neurodiversity. Using evidence-based tools and clinical expertise, we explore your experiences to support meaningful insight and personalised next steps — whether you’re seeking an ADHD or Autism assessment, diagnostic clarity, or recommendations for support.
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Have questions?
We understand that seeking an assessment can feel overwhelming.
If you'd like to discuss your options or have questions about the process, our team is here to help.
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If you've decided to proceed with an assessment, select the relevant option below to complete the Terms of Engagement and begin the next step of your journey.
Attention Deficit Hyperactivity Disorder (ADHD)
Autism Deficit Hyperactivity Disordr is a neurodevelopmental disorder that begins in childhood and involves psychological and behavioral features that can negatively affect all aspects of life, including school, work and relationships.
ADHD is characterised by symptoms of inattention, hyperavtivity and/or impulsivity.
Between childhood and adulthood the hyperactivity/impulsivity symptoms tend to decrease and inattention symptoms become predominant.Treatments that target both biological and behavioural factors can be helpful, and evidence shows that outcomes are more effective when medication and behavioural treatments are combined. Approximately 1 in 20 adults are affected by ADHD, with many undiagnosed and untreated.
Autism (ASD)
Autism is a neurodevelopmental condition that impacts cognitive, sensory, and social processing, influencing how individuals experience the world and connect with others. Every autistic person is unique, offering a rich variety of skills, qualities, interests, and personality traits.
Autism is currently estimated to affect 1 in 54 individuals*. It is not classified as a mental illness but rather a neurological difference, representing one of many variations of neurodiversity.
Combined Autism and ADHD (AuDHD)
Combined Autism and ADHD frequently coexist at notably higher rates, presenting unique challenges for adults with both conditions. The symptoms of each can overlap, which is why clinicians often screen for both during evaluations. Although research on adult autism and ADHD is limited, there is a general consensus among clinicians regarding best practices for assessing and treating patients with both disorders.
Adult Neurodiversity Assessments
At The Nelson Clinic, we offer streamlined assessment services to help you gain clarity around ADHD and Autism.
Our assessments are completed by experienced psychologists and nurse practitioners, using evidence-based tools and a structured approach. If treatment or further support is recommended, we can connect you with our neurodiversity coaching, therapy, or psychiatry teams.
We provide comprehensive assessments to explore whether ADHD and/or Autism may be contributing to your experiences. This includes understanding how symptoms present in your day-to-day life and ensuring other possible explanations are carefully considered.
As part of the assessment, we gather information such as:
Developmental history
Educational history
Family history
We also use a combination of clinical interviews, observation, and standardised questionnaires to support an accurate and well-informed outcome.
Assessments are primarily conducted online, with limited in-person appointments available in Christchurch.
Step 1
Initial Questionnaires
You’ll begin by completing a series of questionnaires designed to help us understand how you think, feel, and function in daily life. These look at areas such as attention, emotional regulation, and behaviour.
Step 2
Assessment Appointment
You’ll then have an online assessment with a psychologist or nurse practitioner. This is an opportunity to talk through your experiences in more detail and explore whether ADHD and/or Autism may be relevant.
Follow-up appointment
Once your report is complete, we offer a follow-up session to go through your results and answer any questions.
Step 3
Coaching and Therapy
You do not need an assessment to access our coaching and talk therapy.
If you would like ongoing support, we offer ADHD coaching and talk therapy.
ADHD coaching focuses on practical strategies to manage day-to-day challenges
Talk therapy provides space to explore your experiences, including things like anxiety, trauma, or life transitions
Step 4
Medication Consultation
If ADHD is diagnosed, you may choose to book a medication consultation with our psychiatry team to explore treatment options.
What to expect
What happens next
The assessment process is designed to be straightforward and flexible, while ensuring you receive a thorough and accurate outcome.
Before your assessment
You’ll be asked to complete a Terms of Engagement form
An invoice will be sent for the initial psychometric testing
You’ll complete your questionnaires online
Assessment and follow-up
Your assessment appointment will be booked once payment is received
The assessment is completed via telehealth
A follow-up session is provided to go through your results and answer any questions
After your assessment
You can choose what support feels right for you. Options may include:
ADHD coaching
Therapy or counselling
Medication consultation or referral
Important to know
The process is completed step-by-step to keep it as efficient and cost-effective as possible
You can choose to stop at any stage
If we are unable to provide the right support for your needs, we may recommend another provider
Autism funding (additional information)
If you are seeking Autism-related funding (e.g. NASC, respite or individualised funding), an additional referral may be required and there may be an associated cost. Please let us know if you would like more information.
Adult Neurodiversity Pricing Information
We aim to keep our pricing clear and transparent, so you know what to expect.
Assessment Costs
ADHD or Autism Assessment - $1,200 (incl. GST)
Combined ADHD & Autism Assessment - $1,650 (incl. GST)
These prices include:
Initial questionnaires and psychometric testing
Clinical assessment with a psychologist or nurse practitioner
Scoring, analysis, and diagnostic report
Follow-up appointment to discuss your results
Payment Information
Payment is required before your assessment appointment is confirmed
Invoices are sent in stages to support the assessment process
After Your Assessment (Optional)
You may choose to access further support depending on your needs.
Medication Consultations
Standard consultation (existing clients): $730
Complex consultation: $970
New clients (non-TNC): $851
Non-attendance fee
Less than 24 hours’ notice: $250
Additional Specialist Advice
(If requested by your GP after assessment)
Nurse Practitioner: $250.70 per hour
Psychiatrist: $484 per hour
Ongoing Support & Treatment Costs
After your assessment, you may choose to access additional support depending on your needs.
Medication Support
Medication consultation
From $730
Medication follow-up
From $250.70
Includes a 30-minute appointment, prescription (if required), and communication with your GP.
Non-attendance (less than 24 hours’ notice): $125
ADHD Coaching
Individual sessions
$130 per session
Group sessions
$210 per person (4-session block, minimum 4 participants)
Non-attendance fee: $65
Therapy
Counselling / Art Therapy
$157 per session
Psychotherapy
$180 per session
Psychology
$217 per session
Non-attendance fees:
Counselling: $78.75
Psychotherapy: $90.00
Psychology: $108.50
