Specimen Requirements
Title
IRON-BINDING CAPACITY, UNSATURATED (TIBC) Includes Iron and % Saturation (Transferrin)
Specimen Requirement
1 SST/2.0 mL serum. After 30 minutes of clotting, promptly centrifuge and refrigerate serum.
Methodology
Spectrophotometry
Stability
Room Temp: 4 days; Refrigerated: 7 days
Reference Range
155-300 ug/dL
Turnaround
1 day
Clinical Use
Serum iron concentration connotes the Fe (III) bound to serum transferrin and does not include the iron contained in serum as free hemoglobin. Because normally only about one third of the iron binding sites of transferrin are occupied by Fe (III), serum transferrin has considerable reserve iron binding capacity.
Test Code
TIBC