**Qualifications: 
Not based on Ferritin, based
on hemoglobin and trimester.
Patient must have had a
documented trial of oral iron
that hasn't improved
hemoglobin levels.
If after trial in first trimester,
hemoglobin remains below 11
If after trial in second trimester,
hemoglobin remains below 10.5
If after trial in third trimester,
hemoglobin remains below 10.5.
If after trial in postpartum,
hemoglobin remains below 10