In June 2026, three of the field’s leading professional organisations issued a joint statement on genetic testing after a developmental diagnosis. Most families have not been told about it, and it is short enough to read in a waiting room.

Here is the part that matters to you: exome or genome sequencing is now positioned as a first-choice test for children with developmental delay or intellectual disability — not as a last resort once everything else has been tried.

This does not mean testing is right for every family. It means the door is open, and you no longer have to argue your way to the front of it.