At What Age Can Autism Screening Be Done?

PostedNovember 10, 2025

UpdatedNovember 10, 2025

ByMy Patient Advice

Author: Lucia Alvarez, MSc | Reviewed by: Dr. Rebecca Fernandez, MBBS

The age for autism screening plays a critical role in the early identification of autism spectrum disorder (ASD). Early detection is essential, as it allows for timely interventions that can significantly improve a child’s development. Most healthcare professionals recommend that autism screening be performed between the ages of 18 and 24 months, as this is when early signs of autism are often most noticeable. However, some children may be screened earlier or later depending on specific concerns or developmental delays observed by parents or caregivers.

Early childhood is the most important period for identifying developmental disorders like autism, as early intervention can lead to better outcomes in communication, social skills, and overall development.

When Should Autism Screening Be Done?

Here’s a closer look at the age for autism screening:

Early Childhood:

The age for autism screening is typically set at 18 and 24 months. This is because many of the early childhood signs of autism, such as social withdrawal, language delays, or repetitive behaviours, start to emerge during this time. Screening at this age ensures that concerns can be identified and addressed promptly.

Developmental Timing:

During developmental timing, most children begin to reach key milestones, such as speaking a few words, responding to their name, and engaging in basic social interactions. Delays or atypical behaviours at this stage can prompt a screening to assess whether autism is a factor.

Screening Age Range:

The screening age range typically starts at 18 months and continues through to age 3, with some experts recommending screening at later ages if concerns persist. If a child shows signs of developmental delay, even after 24 months, they may benefit from ongoing screening and evaluation.

By screening children at the recommended ages, parents and caregivers can take early steps toward intervention and support. For expert advice and personalised consultations, visit providers like Autism Detect to ensure your child receives the right guidance and care.

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to Autism Screening and Assessment Tools.

Lucia Alvarez, MSc

Author

Lucia Alvarez is a clinical psychologist with a Master’s in Clinical Psychology and extensive experience providing evidence-based therapy and psychological assessment to children, adolescents, and adults. Skilled in CBT, DBT, and other therapeutic interventions, she has worked in hospital, community, and residential care settings. Her expertise includes grief counseling, anxiety management, and resilience-building, with a strong focus on creating safe, supportive environments to improve mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy.

Dr. Rebecca Fernandez, MBBS

Reviewer

Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the reviewer's privacy.