Welcome To spectrum sisters
Specialist autism &
ADHD assessments
tailored for women
We provide in-depth, clinically grounded autism and ADHD remote assessments and support tailored to how neurodiversity presents in women and girls – often missed, misunderstood or misdiagnosed.
Why Women Are Often Missed
Autism & ADHD often go
undiagnosed in women
The ONLY UK service dedicated exclusively to Autism and ADHD assessments for women and girls, delivered by a female-only team with both professional and lived experience.
We operate under stringent regulations and NICE Guidelines.
We specialise exclusively in women and girls due to their differing presentation.
Our assessments are psychologist-led, and include three clinicians, and a highly trained, female-only, MDT team, with lived and professional experience.
Assessments use gold-standard diagnostic tools including ACIA, ADOS-2, ADI-R, DIVA-5 and Qbtest
No waiting lists - fast turnaround reports that remain detailed, professional and focused on functional impact to support funding and reasonable adjustment requests.
Able to work with private clients, remotely, from age 12+
Our Story
Built to understand neurodiverse women better
Spectrum Sisters was founded by Chay Thompson who regularly saw in both her practice as a social worker, and her lived experience, the vast amounts of neurodivergent women and girls being misdiagnosed, and under-diagnosed and the impact that would have on their lifespan. She also felt even when they were diagnosed, that process itself was commonly very traumatic in itself and service users were often left with no post-diagnostic support and a very limited report that really told them nothing about themselves – only provided a diagnosis.
Passionate about redressing this imbalance, Spectrum Sisters was formed and we now have a growing number of professionals from the fields of psychology, psychiatry, social work, mental health nursing and beyond who support our goals. We are all committed to offering much needed specialised, in-depth, detailed Autism and ADHD assessments and support for women and girls in order to help them to gain clarity, understand themselves better, access the right funding and support, and gain the tools in life to be able to thrive. We operate under stringent regulations, and NICE guidelines ensuring the highest standards of assessment.
Spectrum Sisters was founded by Chay Thompson who regularly saw in both her practice as a social worker, and her lived experience, the vast amounts of neurodivergent women and girls being misdiagnosed, and under-diagnosed and the impact that would have on their lifespan. She also felt even when they were diagnosed, that process itself was commonly very traumatic in itself and service users were often left with no post-diagnostic support and a very limited report that really told them nothing about themselves – only provided a diagnosis.
Passionate about redressing this imbalance, Spectrum Sisters was formed and we now have a growing number of professionals from the fields of psychology, psychiatry, social work, mental health nursing and beyond who support our goals. We are all committed to offering much needed specialised, in-depth, detailed Autism and ADHD assessments and support for women and girls in order to help them to gain clarity, understand themselves better, access the right funding and support, and gain the tools in life to be able to thrive. We operate under stringent regulations, and NICE guidelines ensuring the highest standards of assessment.
What We Do
Our Assessments
At Spectrum Sisters, we provide specialist, female-led assessments and support for women and girls with autism and ADHD across the UK. Our services are designed to be holistic, person-centred, and neurodiversity-affirming, recognising the unique ways autism and ADHD present in females.
ADHD Assessment
All our assessments are undertaken by qualified practitioners in DIVA-5 and Qbtest with advanced training and experience in female ADHD….
Price: £1,300
Autism Assessment
All our assessments are undertaken by qualified practitioners in ACIA, ADOS-2, ADI-R, with advanced training and experience in female autism….
Price: £2,000
Combined Autism & ADHD Assessment
For those wanting to be assessed for Autism and ADHD at the same time, we offer a combined package….
Price: £3,000
How It Works
A simple, guided process from enquiry to diagnosis
We keep the process flexible and low-pressure, particularly for those who may find engagement difficult.
2. Assessment (adapted to individual needs)
4. Optional follow-up support
1. Initial enquiry
2. Assessment (adapted to individual needs)
3. Comprehensive written report
4. Optional follow-up support
1. Initial enquiry
3. Comprehensive written report
Masking
What is Masking?
We know only too well how the female presentation of Autism and ADHD is vastly different from the male presentation. We know what masking looks like and we also know how deeply it can affect a person’s mental health and wellbeing. Research has shown the devastating impact long-term masking can have on the mental health of children and adults, and we are highly trained to recognise this, making our assessments far more reliable and in-depth.
Why Getting a Diagnosis Matters
Clarity, support, and a safer, more empowered future
Women and girls with autism and/or ADHD are often underdiagnosed or misdiagnosed. Without proper understanding, they may face challenges such as social isolation, poor mental health, and increased vulnerability to harmful situations.
A formal diagnosis can help by:
- Providing clarity and validation of lived experiences
- Improving mental health and self-understanding
- Enabling access to the right support and resources
- Supporting safety, boundaries, and confidence
- Helping with workplace or school adjustments
- Opening opportunities for funding and structured support
our testimonials
Customer Reviews
Hear from women who finally found clarity, validation, and understanding through our assessments.
Victoria Goodman
Client
Elle
Client
Dean Murphy
Client
'D'- Autism assessment
Client
Sandra Dettmer, Germany
Client
Louisa Sisson
Client
Maddie Davies
Client
Beth Sennett
Client
meet the team
Qualified professionals specialising in female autism and ADHD
Our assessments are carried out by a female-only specialist team with training in female neurodiversity and gold-standard assessment tools.
Trained psychologists specialising in neurodiversity coaching and executive functioning
Chay Thompson
Founder & Neurodevelopmental Diagnostician
Dr. Helen Sessions
Dr. Priscila Kheraj
Psychologist & Behaviour Analyst













