Iron Panel (Iron, TIBC, Ferritin)
Comprehensive iron status assessment that measures serum iron, total iron-binding capacity, and ferritin levels to evaluate iron deficiency, iron overload, and related conditions.
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LevelPanel has no business or affiliate relationship with Quest or LabCorp. These links are provided as a public service.
Lab testing services linked from this site are not available to residents of Alaska, Arizona, or Hawaii, unless otherwise noted on the lab's own website.
This publication is not intended to solicit the purchase of laboratory testing from any individual consumer.
What this test measures
The Iron Panel brings together three complementary measurements to reveal how the body is acquiring, transporting, and storing iron. Iron is a mineral the body cannot do without: it is the core component of hemoglobin (the protein in red blood cells that carries oxygen), it fuels energy production at the cellular level, and it supports immune defense.
The panel reports serum iron (the amount of iron circulating in the bloodstream at the time of the draw), total iron-binding capacity or TIBC (a measure of how much iron the blood's transport proteins could carry at maximum capacity), and ferritin (a storage protein that reflects the body's iron reserves). A calculated value called transferrin saturation, derived by dividing serum iron by TIBC, adds further clarity. A single serum iron reading taken in isolation can be misleading because iron levels fluctuate throughout the day and respond to recent meals. By looking at all three markers together, healthcare providers can distinguish between iron deficiency at various stages, iron-deficiency anemia, and iron overload conditions such as hemochromatosis.
What's included
Who should consider this test
You might consider this test if you are experiencing any of the following:
- Individuals experiencing symptoms of iron deficiency such as fatigue, weakness, shortness of breath, or unusual cravings for ice or starch
- Those with heavy menstrual periods, chronic blood loss, or conditions that may affect iron absorption
- People following vegetarian or vegan diets who may have increased risk of iron deficiency
- Individuals with family history of hemochromatosis or iron overload disorders
- Those with chronic conditions like kidney disease, heart failure, or inflammatory disorders that can affect iron metabolism
- Athletes or active individuals who may have increased iron requirements
- People taking iron supplements who want to monitor their iron status and avoid overload
What to expect
Preparation
Fasting for 8-12 hours before the test is typically recommended for the most accurate results. Iron supplements should be discontinued 3 days before testing if possible, as they can affect results. Morning testing is preferred since iron levels naturally fluctuate throughout the day.
Sample Type
A simple blood draw from a vein in the arm, similar to other routine blood tests.
Collection
The blood sample collection takes just a few minutes at any participating lab location. No doctor visit required - results are sent directly to patients.
Turnaround
Results are typically available within 1-2 business days after the sample is collected.
Understanding your results
The three measurements in this panel are designed to be read as a set. Each one tells a different part of the story: serum iron captures what is available right now, TIBC reflects the body's carrying capacity, and ferritin reveals how much is stashed away in storage. The ratio of serum iron to TIBC (transferrin saturation) is particularly useful for distinguishing between different iron disorders. Healthcare providers evaluate the overall pattern rather than any single value, and they factor in symptoms, dietary habits, and medical history when determining next steps.
| Population | Reference Range | Notes |
|---|---|---|
| Adult Males | Iron: 75-175 mcg/dL, TIBC: 250-450 mcg/dL, Ferritin: 30-400 ng/mL | Males typically have higher ferritin levels than females due to lack of menstrual blood loss |
| Adult Females | Iron: 60-170 mcg/dL, TIBC: 250-450 mcg/dL, Ferritin: 15-150 ng/mL | Females often have lower ferritin due to menstrual iron losses and may require closer monitoring |
| Children | Varies by age - consult pediatric reference ranges | Children have different iron requirements during periods of rapid growth |
Reference ranges shown are general guidelines. Your lab report will include the specific reference range used by the laboratory that processed your sample, which is the authoritative range for interpreting your results.
What does a “Low” result mean?
The combination of low iron, high TIBC and low transferrin saturation typically indicates iron deficiency, while low ferritin supports this diagnosis. Iron deficiency progresses through stages: first iron stores become depleted (low ferritin), then iron-deficient erythropoiesis occurs (low ferritin, high TIBC, low transferrin saturation), and finally iron deficiency anemia develops with low hemoglobin. Low iron levels may result from inadequate dietary intake, chronic blood loss, poor iron absorption due to conditions like celiac or Crohn's disease, or increased iron demands during pregnancy or periods of growth. Early detection of iron deficiency allows for intervention before anemia develops.
What does a “High” result mean?
If iron levels are high but TIBC is low, this pattern may suggest iron overload conditions such as hemochromatosis. High ferritin levels can indicate iron overload, but they may also be elevated due to inflammation, infection, liver disease, or other medical conditions. Hyperferritinemia occurs when ferritin levels exceed 400 ng/ml and has been implicated in various autoimmune, inflammatory, and infectious diseases. Elevated iron panel values may warrant further evaluation for hereditary hemochromatosis, especially in individuals with family history or symptoms such as joint pain, fatigue, or abdominal discomfort.
Privacy & confidentiality
All test orders are authorized and results reviewed by an independent, board-certified physician who is not the patient's personal doctor. Your Iron Panel results are completely confidential and handled with the utmost privacy protection. Results are <u>not sent to your personal doctor</u> unless you specifically request them to be shared. The test and results are <u>not added to your medical records</u> and will <u>not appear on insurance statements</u> or explanation of benefits forms. Your iron status information remains private and is not shared with employers, insurance companies, or other third parties. This confidential testing allows individuals to monitor their iron levels and take proactive steps toward better health without concerns about privacy or potential impacts on insurance coverage.
Frequently asked questions
Related tests
Complete Blood Count (CBC)
Often ordered alongside Iron Panel to evaluate for anemia and assess red blood cell characteristics that may indicate iron deficiency
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Helps differentiate iron deficiency anemia from other types of anemia caused by B12 or folate deficiency
View TestComprehensive Metabolic Panel (CMP)
Provides additional context about overall health status and organ function that may affect iron metabolism
View TestRelated conditions
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Read ArticleLast reviewed: April 10, 2026
CPT Code: 83540, 83550, 82728
This test may not be available in: NY, NJ, RI
This page is for informational purposes only and does not constitute medical advice. Always consult with a healthcare provider regarding any health concerns. LevelPanel does not diagnose, treat, or prescribe.
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LevelPanel has no business or affiliate relationship with Quest or LabCorp. These links are provided as a public service.
Lab testing services linked from this site are not available to residents of Alaska, Arizona, or Hawaii, unless otherwise noted on the lab's own website.
This publication is not intended to solicit the purchase of laboratory testing from any individual consumer.
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