My Daughter is also Nine when we applied for ILE .
Yes , TB Clearance Certificate is included to go with the visa application.
https://www.gov.uk/tb-test-visa/overview
All children must see a clinician who’ll decide if they need a chest x-ray. Children under 11 will not normally have a chest x-ray.
You must take your child to an approved clinic and complete a health questionnaire. If the clinician decides your child doesn’t have TB they’ll give you a certificate. Include this certificate with your child’s UK visa application.