Due to the increasingly large NHS waiting lists for adult autism assessments, I am considering biting the bullet and going private. My primary concern (apart from the cost) is the fact that I don't really have anyone who could accurately represent my childhood for the ADI-R part of the assessment (I'm 50 years old). Therefore, can an assessment be purely based on ADOS-2? If so, is it still a valid assessment? I'd be interested to hear from anyone in a similar situation who has managed to find a valid assessment path. Thanks in advance.