Kent Autism Service

About Diagnostic Assessment Services

Diagnostic assessment services provide formal evaluations for conditions such as autism and ADHD. These assessments are carried out by qualified professionals and follow recognised diagnostic frameworks such as those set out in NICE Guidelines. A private diagnostic assessment can be a helpful option for families who face long NHS waiting times.

A private diagnosis is clinically valid and can be used to support applications for an Education, Health and Care Plan (EHCP) or to access additional support at school.

Before Your First Appointment

To get the most from a diagnostic assessment, it can help to prepare the following:

• Any previous reports from school, nursery, or other professionals
• Your child's school reports and any notes from teachers about behaviour or learning
• A developmental history, including milestones and any early concerns
• Examples of behaviours or situations that prompted the referral
• Your child's Education, Health and Care Plan (EHCP) if they have one

Diagnostic assessments typically involve multiple sessions and may include observation, standardised tests, parent interviews, and questionnaires completed by school staff.

Helpful Resources

• NHS vs Private Autism Assessment in Kent — comparing your options
• Private Autism Assessment in Kent — what to expect and costs
• How to Apply for an EHCP in Kent — if your child needs funded support
• First 100 Days After an Autism Diagnosis
• All Psychologists in Kent

Frequently Asked Questions

Do I need a GP referral for a private autism assessment?

No. You can typically book a private diagnostic assessment directly without a GP referral. However, some providers may request background information from your GP. If you want an NHS assessment, you will need a referral from your GP.

Will a private diagnosis be accepted by schools and the local authority?

A private diagnosis from a qualified professional is clinically valid. Schools and local authorities should recognise it, though some may request additional evidence. A diagnostic report can support EHCP applications and requests for reasonable adjustments at school.

How long does a diagnostic assessment take?

This varies by provider and the type of assessment. An autism assessment may involve two or more sessions over several weeks. The provider will explain their process during the initial enquiry.