[6] Missed milestones may be cause for concern, so the doctor or another specialist may call for a more thorough test or exam to take a closer look, this is usually done by going through Developmental Screening.
The AAP also recommends that all children be screened specifically for autism spectrum disorder (ASD) during regular well-child visits at 18 and 24 months.
[4] Neonatal screening is used in the UK (Guthrie test) and can diagnose certain inborn errors of metabolism before they cause significant developmental problems, with the aim to manage them so that no permanent damage occurs.
[citation needed] Canada, the US, and the Netherlands offer more extensive newborn screening, encompassing some other amino acid, organic, and urea cycle disorders.
[8] The specific management of children with global developmental delay will depend on their individual needs and underlying diagnosis.