The hemostatic profile of an infant is different than that of an adult and changes with age. Most differences occur within the first 6 months of age, with coagulation function similar to that of an adult within the first year of life. To assess the clinical utility of the Quantra System in pediatric patients that are bleeding or at risk for bleeding, it is important to understand the normal reference intervals for the parameters reported by the QPlus Cartridge in normal, healthy pediatric patients.