ASQ-3 and ASQ:SE-2 remain up-to-date, valid, reliable screening tools for identifying young children who may be at risk of developmental delays. In fact, ASQ data helped inform the recent revision of the CDC developmental milestones.

The updated CDC milestones are designed to help parents monitor their children’s development and do not replace formal developmental screening.

ASQ-3 and ASQ:SE-2 items and cutoff scores were developed through an extensive research process and do not need to be updated in light of the updated milestones.

Here is an article that may help explain further:

https://blog.brookespublishing.com/asq-and-the-new-cdc-milestones-your-questions-answered/