What none of these tests looks for
The conditions that account for most childhood disability are not on any prenatal panel, and never have been.
Every test in this stage looks at chromosomes, at genes, or at the shape of the body. Below is a short list of things parents commonly assume have been checked, with the rates at which they actually occur. None of them is screened for before birth.
| Condition | How common | Source and population |
|---|---|---|
| Autism spectrum disorder | 32.2 per 1,000 children aged 8, about 1 in 31. Site range 9.7 to 53.1. Boys 49.2 per 1,000, girls 14.3 | US surveillance network, 16 sites, 2022 surveillance year |
| Intellectual disability among children with autism | 39.6% of those with cognitive information available | Same network |
| Cerebral palsy | 2.9 per 1,000 children aged 8 (2.6 to 3.2) | US surveillance, four areas, 2010 surveillance year. This is not a current-year figure and is labelled here as 2010 |
| Preterm birth | 10.41% of 3,628,934 US births | CDC summary page, 2024 births |
| Low birthweight | 8.52% | Same page |
The site range for autism is worth a second look. From 9.7 to 53.1 per 1,000 across 16 US sites is a spread that tells you as much about how children are identified in different places as about the children themselves.
ACOG says this in its own documentIts still-current bulletin on prenatal diagnostic testing states:
Nothing in this stage is an argument against testing. It is ACOG's own paragraph, said out loud to the person it was written about.
Prenatal genetic testing cannot identify all abnormalities or problems in a fetus, and any testing should be focused on the individual patient's risks, reproductive goals, and preferences. It is important that patients understand the benefits and limitations of all prenatal screening and diagnostic testing, including the conditions for which tests are available and the conditions that will not be detected by testing. It also is important that patients realize that there is a broad range of clinical presentations, or phenotypes, for many genetic disorders and that results of genetic testing cannot predict all outcomes.
Nothing in this stage is an argument against testing. It is ACOG's own paragraph, said out loud to the person it was written about.
Say this out loud"Which of the things I am worried about does this test not cover?"
"Is there any prenatal test at all for the things on that list?"
"Is there any prenatal test at all for the things on that list?"
Where this comes from:
485. Shaw KA, Williams S, Patrick ME, Valencia-Prado M, Durkin MS, Howerton EM, et al. Prevalence and early identification of autism spectrum disorder among children aged 4 and 8 years: Autism and Developmental Disabilities Monitoring Network, 16 sites, United States, 2022. MMWR Surveill Summ. 2025;74(2):1-22.
486. Durkin MS, Benedict RE, Christensen D, Dubois LA, Fitzgerald RT, Kirby RS, et al. Prevalence of cerebral palsy among 8-year-old children in 2010 and preliminary evidence of trends in its relationship to low birthweight. Paediatr Perinat Epidemiol. 2016;30(5):496-510.
487. American College of Obstetricians and Gynecologists. Prenatal diagnostic testing for genetic disorders. Practice Bulletin No. 162. Obstet Gynecol. 2016;127(5):e108-e122.
489. Centers for Disease Control and Prevention, National Center for Health Statistics. FastStats: births and natality. Last reviewed 24 June 2026.
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This page is educational. It supports the conversation with your own clinicians. It is not consent to any treatment, and it cannot assess you. If you are worried about a symptom now, see urgent warning signs.