RecruitingThe Neonatal Hemorrhagic Risk Assessment in ThrombocytopeniaThis is a prospective observational study designed to evaluate Immature Platelet Fraction or Immature Platelet Count and Platelet Function Analyzer-100/200 Closure Time-ADP (in vitro bleeding time) as markers of bleeding risk in thrombocytopenic preterm neonates admitted to the Neonatal Intensive Care Unit.