Iron
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Measures circulating iron in blood; useful for anemia or iron overload diagnosis.
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🧪 What is the Iron Test?
The Serum Iron test measures the amount of iron circulating in the blood, primarily bound to a protein called transferrin. Iron is essential for:
- Hemoglobin production in red blood cells (oxygen transport)
- Energy metabolism
- Cell growth and function
It helps diagnose anemia, iron overload, and related conditions.
❓ Why is the Test Done?
To:
- Diagnose or evaluate iron deficiency anemia
- Detect iron overload conditions such as hemochromatosis
- Monitor iron therapy effectiveness
- Investigate causes of chronic fatigue, weakness, or pallor
📊 Normal Range
Population | Serum Iron Reference Range |
|---|---|
Men | 65 – 176 µg/dL |
Women | 50 – 170 µg/dL |
Children | 50 – 120 µg/dL |
Values may vary slightly depending on the laboratory and methodology.
📈 Interpretation of Results
Iron Level | Possible Interpretation |
|---|---|
Low (<50 µg/dL) | Iron deficiency anemia, chronic illness, malnutrition, blood loss |
Normal | Sufficient iron levels for normal erythropoiesis |
High (>170–180 µg/dL) | Hemochromatosis, iron poisoning, hemolysis, liver disorders |
Interpretation is best when combined with TIBC, transferrin saturation, and ferritin.
🧠 Associated Organs & Conditions
Organ/System | Related Conditions |
|---|---|
Hematologic | Iron deficiency anemia, thalassemia, hemolytic anemia |
Liver | Hemochromatosis, hepatitis (iron stored in liver) |
Gastrointestinal | GI bleeding, malabsorption (celiac, Crohn’s) |
Endocrine | Menstrual loss-related anemia, pregnancy-related deficiency |
🔄 Related / Follow-Up Tests
- TIBC (Total Iron Binding Capacity)
- Transferrin Saturation (%)
- Serum Ferritin – best indicator of iron stores
- Hemoglobin (Hb), Hematocrit (HCT), RBC indices
- Reticulocyte count
- Liver function tests – if iron overload suspected
✅ Fasting Required?
Test | Fasting Requirement |
|---|---|
Iron | ✅ Yes – 8–12 hours fasting preferred (iron fluctuates after meals) |
📝 Summary Table
Parameter | Details |
|---|---|
What | Measures iron in bloodstream, mostly bound to transferrin |
Why | Diagnose anemia, iron deficiency, or iron overload |
Normal Range | 50–170 µg/dL (women), 65–176 µg/dL (men) |
High Result | Hemochromatosis, iron overload, liver dysfunction |
Low Result | Iron deficiency, GI blood loss, chronic illness |
Follow-up Tests | Ferritin, TIBC, transferrin saturation, CBC |
Associated Conditions | Anemia, liver disease, malabsorption, pregnancy |
Fasting Required | ✅ Yes – recommended |
How our test process works!
