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?
- If you have signs or symptoms of iron deficiency anemia like pallor, fatigue, weakness, headaches
- 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
- 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
Interpreting IRN results
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