About Autism Diagnosis Child What happens if I don’t agree? After a diagnosis it’s likely you’ll have to navigate an array of different thoughts, emotions and feelings. We want you to know that this is okay. As a parent, you may not agree with the findings, in which case you can request a second opinion. You can do this by: Going back to the GP. Tell them that you are not happy with the findings and that you would like your child to be referred elsewhere for a second opinion. Ask the diagnostic team to refer you on to a ‘specialist level of healthcare’ also known as a tertiary level service. This usually happens in ‘complex cases’ and does require additional funding. Seeking a private diagnosis.