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Iron Serum (IRN)

Fe Level
Overview
Interpreting Results

Overview of IRN

What is IRN?

This test is ordered as a follow up test when abnormal results are found on routine tests such as CBC; when your doctor is suspecting either deficiency of iron or excess of iron. The features of iron deficiency are pale skin, fatigue, headaches, weakness.

Why is IRN done?

  1. If you have signs or symptoms of iron deficiency anemia like pallor, fatigue, weakness, headaches
  2. If your CBC shows that your hemoglobin and hematocrit are low and RBC’s are smaller and paler than normal which usually suggest iron deficiency anemia 
  3. If you have signs or symptoms of increased accumulation of iron in the body like joint pain, abdominal pain, fatigue, loss of body hair

Preparation for IRN

  • Do not eat or drink anything other than water for 8-12 hours before the test.

Sample Type for IRN

The sample type collected for Iron Serum is: Blood

Interpreting IRN results

Interpretations

Serum iron test is usually evaluated in conjunction with other iron tests. 

  • A low iron with a high TIBC and transferrin usually indicates iron deficiency anemia. Various causes of iron deficiency are decreased intake, pregnancy, lactation, malabsorption syndromes 
  • High levels of serum iron can occur as a result of multiple blood transfusions, lead poisoning, liver diseases, sideroblastic anemia, hemachromatosis 

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