Iron


Abbrev Code:FE   
Order Code:LAB94Order Name:Iron
Methodology:Bichromatic endpoint
St Joseph: Ferene without PPR
CPT Codes: 83540 x1
Turnaround Time:Performed and reported 24 hours/day.


Collection Instructions

Specimen:Blood
Optimal Volume:2.5 mL
Minimum\Peds Volume:0.6 mL
Container:Green (lithium heparin, gel), St Johns/St Joseph/Woodwinds-Green (lithium heparin, no gel)
Alternate Containers: Green (lithium heparin, no gel), Red (no gel), Red or gold (gel), St Johns/St Joseph/Woodwinds - Red (no gel)
Collection Instructions: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.
Causes for Rejection:Moderate hemolysis
Contraindications:Falsely elevated iron levels will result if the patient has received therapeutic iron within the past two months. Patients treated with metal-binding drugs such as Deferoxamine may have depressed iron values as chelated iron may not properly react in the iron assay.


Processing and Shipping

Specimen Processing:Centrifuge and aliquot 1.25 mL, 0.2 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Stability:Stability: Refrigerated - 7 days; frozen - 6 months.
Test Performed at or Referral Lab Chemistry  (University of Minnesota Health Maple Grove Clinics, Range, UMMC-East Bank, Oxboro Bloom, Lakes, Ridges, Northland, Southdale, UMMC/UMMCH-West Bank, M Health Clinic and Surgery Center, Grand Itasca, St. Joseph's)


Interpretive

Reference Range:
Site Age μg/dL
Grand Itasca All 50-212
St Johns/
St Joseph/Woodwinds
All 42-175
All other sites 0-6 d 110-270
All other sites 7-30 d 80-156
All other sites 1-5 mo 25-115
All other sites 6 mo-13 y 25-140
All other sites 14 y & older 35-180
 


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