Assessment of Neurofilaments Levels in Premature Newborns: Study of Their Early Development

An additional blood sample (maximum 1 mL) is collected during routine clinically indicated blood draws in late preterm infants (34-37 weeks of gestation). Samples are obtained at birth, day 2, and weekly until 37 weeks of gestation if blood draws are already planned. No separate venipuncture is performed. Samples are processed and stored for subsequent neurofilament concentration analysis.