A maternal blood test has been found to provide clues about prenatal methylation linked to autism risk. However, reports on the topic are mixed, with some outlets discussing unrelated medical screenings and conditions, such as prenatal syphilis screening, Alzheimer's disease, and newborn HBV vaccination. The connection between the blood test and autism risk is the primary focus of some reports, including those on epigenomic signatures and predictive markers for autism spectrum disorder.