IntraVenous Iron in Kids With Iron Deficiency and Scoliosis Study

Inclusion Criteria: * 10 -19 years old * diagnosis of scoliosis or kyphosis * scheduled for imminent spinal fusion procedure (\<6 weeks) at MS-CHONY * Iron deficiency or hypoferritinemia, defined as serum ferritin less than or equal to 50 μg/L Exclusion Criteria: * C-reactive protein \> 10 mg/L * receiving nutritional support by report in the medical chart * self-reported history of hypersensitivity reaction to iron-containing supplements * self-reported history of receiving intravenous iron supplements * self-reported history of iron overloaded state such as hereditary hemochromatosis or hemosiderosis * objection to receiving red blood cell transfusions * current pregnancy (identified by self-report or documentation of preoperative screening test in the medical record) * prisoners * patient or parent decides against study participation