Expanded Newborn Screening Test

Expanded newborn screening involves the screening the newborns for many harmful or potentially fatal metabolic disorders that are not apparent at birth in a single test. Early detection of a metabolic disorder helps facilitate early intervention. This would prevent long-term detrimental effects to the affected baby’s health.

The screening can either be done with the newborns’ urine or blood specimens. The difference between using urine and blood for newborn screening is the number of metabolic disorders detectable and the invasiveness of the collection. Due to the nature of these specimens as well as the technology available currently, about 50 conditions can be detected from blood, and whereas more than 100 metabolic conditions can be detected from urine.