Iron and Iron Binding Capacity (IBC)


Abbrev Code:FEBC   
Order Code:LAB829Order Name:Iron and Iron Binding Capacity
Order Instructions:Test code generates FE, FEB, ISI
Synonyms:Iron Saturation; FEBC; TIBC
Methodology:Roche:
Vista: Biochromatic end point
CPT Codes: 83550 x1, 83550 x1, 83540 x1, 83540 x1
Test Includes:Iron, % saturation, total iron binding capacity
Turnaround Time:Performed and reported daily.
Special Instructions:Falsely elevated iron levels will result if the patient has received Imferon within the past two months.
Associated Links:

Roche Go Live Schedule



Collection Instructions

Specimen:Blood
Optimal Volume:2.5 mL
Minimum\Peds Volume:0.6 mL
Collection Instructions:Chemistry Tests Containers Chart

Collect sample before patient is given therapeutic iron or a blood transfusion. Blood transfusion can transiently (<24 h) increase serum iron concentration and transferrin saturation (but not total iron binding capacity), particularly if the blood has been stored for a longer period (Blood 2011 Dec 15; 118(25):6675-82; Arch Pathol Lab Med 1993 Jun; 117(6):(622-4).Therefore, if a patient has received blood, delay testing for 24 hours to avoid false elevation of iron or transferrin saturation. Calculation for Transferrin Saturation: (serum iron/TIBC) x 100.
Li heparin in plasma values are aproximately 6% lower than serum values.
Causes for Rejection:Hemolysis


Processing and Shipping

Specimen Processing:Centrifuge within 4 hours and aliquot 1.25 mL, 0.2 mL minimum. Store in refrigerator.
If samples contain precipitate, centrifuge before testing.
Shipping Instructions:Ship at refrigerated temperature.
Stability:7 days refrigerated
Test Performed at or Referral Lab Chemistry  (CSC Maple Grove, Northland, Oxboro Clinic, Range, Roche-CSC Mpls, Roche-Lakes, Roche-Ridges, Roche-St. John's, Roche-UMMC East, Southdale, UMMC/UMMCH-West Bank)


Interpretive

Reference Range:Roche: 112-347 μg/dL Vista:
Age Iron
(μg/dL)
IBC
(μg/dL)
Calculated
ISI (%)
0-6 d 110-270 160-300 15-46
7-30 d 80-156 160-300 15-46
1-3 mo 25-115 160-300 15-46
4-5 mo 25-115 240-430 15-46
6 mo-13 y 25-140 240-430 15-46
14 y & older 35-180 240-430 15-46
 
Use:Increased iron saturation occurs with hemochromatosis, lead poisoning, thalassemia. Decreased iron saturation occurs with iron deficiency. May be normal with anemia or chronic disease.


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