Early access to biological neonatal screening: coordination among child care action programs.

Objective: To verify factors associated with early newborn access to biological neonatal screening.

Method: A cross-sectional quantitative study was carried out with all newborns who underwent tests in healthcare units, hospitals, and laboratories of a city in the state of São Paulo, Brazil, with programs linking healthcare information. The following variables were investigated: child's age at collection (dependent); place of collection; date of collection; and type of user (independent).