This question was raised with Dr Janine Robinson, National Speciality Adviser for Autism and here is her response:
In April 2023 the National Autism Team produced guidance for services and clinicians around optimising processes and patient experiences. This includes information shared with both referrers and the public around local pathways, processes and what to expect. Whilst we understand that seeking an autism assessment can be a daunting experience for some, it remains important that a balance is reached with respect to the detail of information that is provided about exact tools used since several factors may affect clinical decisions about the type of assessment that is conducted and any standardised tools that might be employed.
In fact, it is not essential for a diagnostic assessment tool to be part of the process since it is often only used to support the information gained from the developmental assessment. Hence, the diagnosis of autism is a clinical diagnosis. For people who meet the classification criteria a diagnosis can be made.
This does not preclude services from providing general information about what to expect from the assessment process or encouraging individuals from preparing their own questions and notes in advance of the assessment. Whilst there are no specific or validated assessment tools for women or girls, national guidance advises assessment services on various factors that may need to be considered when assessing individuals from previously or typically under-represented populations and emphasises the importance of clinical decision-making regarding contextual factors rather than reliance on any tools per se.