Whole blood lead concentrations in children undergoing autism assessment in a community paediatric clinic: a retrospective cross-sectional study

Pica and developmental delay were not useful indicators of children with elevated BLC. Their absence could lead to cases of elevated BLC being missed in children with autism. This lends weight to an argument that lead should be screened for routinely in the preschool autism population alongside other common causes of behavioural difficulties and developmental delay such as anaemia.