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Test Code Iron Iron (Fe) Level

Clinical System Name

Iron (Fe) Level

Synonyms

Fe (Iron)

Description

The measurements of serum iron and serum iron-binding capacity are useful in the differential diagnosis of anemia, iron deficiency anemia, thalassemia, possible sideroblastic anemia, and iron poisoning.  Serum iron is decreased in cases of insufficient dietary iron, chronic blood loss, inadequate absorption of iron, impaired release of iron stores (commonly observed in inflammation), infection, and chronic diseases.   

Sample Requirements

Specimen: Whole blood

Container(s): Gold SST, Red Tube, or Dark Green/Sodium Heparin,  Lt. Green/Lithium Heparin Microtainer, or Gold Microtainer

Preferred Vol: 1.0 mL

Minimum Vol: 0.5 mL

 

Note:  Only a total iron level will be run in cases of iron ingestion. Method is affected by hemolysis, sodium citrate, EDTA, fluoride, oxalate. Heparin is acceptable for Iron Level, but not TIBC. Not affected by freezing.

Processing Instructions

Reject due to: Age of specimen, incorrect collection container, hemolysis.

Spin: Y

Aliquot: Y

Temp: 2-8oC

Storage location: Core 5 Refrigerator

 

Off-site collection:  Avoid hemolysis. Spin blood promptly, and store serum at 2-8oC.

Stability

 

Specimen Type Temperature Time
Serum or Plasma RT

 4 D

Serum or Plasma 2-8oC

 7 D

Serum or Plasma -20o C or -70oC

 90 D

 

Availability

STAT Performed TAT
Y 24/7 1 H

 

Performing Laboratory

Seattle Children's Laboratory    

Department

Department:  Core Chemistry

Phone Number: 206-987-2617

 

 

Reference Range

 

 

Age µg/dL
0 - 1 W 125 - 240
1 W- 12 Y 20 - 123
12 Y- Adult 40 - 140
Toxic

≥ 350

 

Methodology

Method: Two Point Rate by Vitros 4600

Analytical Volume:  0.02 mL serum or plasma + 0.03 mL dead space

CPT Codes

83540