Lever
Lifestyle
- Regular exercise
- Stress management
- Adequate sleep
Blutwerte · Marker
TIBC
Total Iron Binding Capacity · Totale Eisenbindungskapazität
Eisen & Anämie
- Einheit:
- µmol/L
TIBC quantifies the total capacity of blood to bind iron with transferrin.
Reference Ranges
Reference
45–72µmol/L
45
72
LowNormalHigh
Reference
Unit · µmol/LReference ranges may vary slightly by laboratory and population. No significant sex-specific differences.
Overview
Übersicht
Total Iron Binding Capacity (TIBC) is a blood test that measures the maximum amount of iron that can be bound by proteins in the blood, primarily transferrin. It reflects the body's capacity to transport iron. Clinically, TIBC is important for diagnosing and differentiating types of anemia, especially iron deficiency anemia (IDA). Elevated TIBC is often observed in IDA, while low TIBC can be seen in conditions such as chronic disease anemia and hemochromatosis. In the context of athletic performance and longevity, researchers have found that lower TIBC levels may be associated with increased longevity, as seen in centenarians. This suggests that iron metabolism may play a role in aging processes. However, TIBC values can be influenced by various factors, including nutritional status, inflammation, and liver function. Testing should consider these confounders, and fasting is not typically required, although consistency in testing conditions is advised for accurate monitoring.
Klinische Bedeutung
Elevated TIBC typically indicates iron deficiency anemia, reflecting increased transferrin levels due to low iron stores. Reduced TIBC may indicate conditions such as anemia of chronic disease or hemochromatosis, where iron overload or inflammation affects transferrin production.
Dynamics
Trend Interpretation
Rising Values
Progressively rising TIBC values may suggest worsening iron deficiency. Re-test in 4-6 weeks if clinically indicated.
Falling Values
Falling TIBC values could indicate resolution of iron deficiency or onset of conditions like chronic disease anemia.
Re-test Interval
4 weeks if outside optimal range
Etiology
Causes — High & Low
Cause
Elevated Levels
- Iron deficiency anemia
- Pregnancy
- Oral contraceptive use
- Acute hepatitis
- Polycythemia vera
Cause
Low Levels
- Chronic liver disease
- Hemochromatosis
- Anemia of chronic disease
- Malnutrition
- Nephrotic syndrome
Protocol
How to Optimize
Lever
Nutrition
- Increase dietary iron intake
- Consume vitamin C-rich foods to enhance iron absorption
- Avoid excessive tea or coffee with meals
Lever
Supplementation
- Iron supplements
- Vitamin C supplements
Note:
Consult a physician before starting iron supplementation, especially if not iron deficient.
Testing Guidelines
✓Fasting Not Required
✓Not Time-Sensitive
Iron levels can vary throughout the day; morning tests are preferred.
Testing Frequency
Annually for individuals at risk of anemia or iron overload.
Interfering Factors
- Recent blood transfusion
- Acute inflammation
- Liver disease
Related Peptides & Hormones
Hepcidin
hormone or peptideMay affect
Open Research Questions
Current research suggests that reference ranges for total iron-binding capacity (TIBC) may vary significantly across populations, and optimal targets for TIBC in diagnosing iron deficiency anemia remain debated. Researchers have not yet established the influence of confounding factors such as inflammation and nutritional status on TIBC levels. Additionally, clinical questions regarding the predictive value of TIBC in assessing long-term outcomes in various patient populations, including those with chronic diseases, remain unanswered.
20 Research Publications
1,310
Total Citations
12
Human/RCT
13.5
Avg. Influence
2025
Latest
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01Top
#01
A malnutrition-inflammation score is correlated with morbidity and mortality in maintenance hemodialysis patients.
HumanInfluence64.0
936
This study developed a comprehensive Malnutrition-Inflammation Score (MIS) for maintenance hemodialysis patients. Researchers found that the MIS, which includes total iron-binding capacity, correlated significantly with hospitalization and mortality rates, suggesting its potential as a predictor of clinical outcomes.
02Top
#02
Laboratory diagnosis of thalassemia.
ReviewInfluence9.0
196
This article focused on the laboratory diagnosis of thalassemia. Researchers found that iron status, including total iron-binding capacity, is crucial for distinguishing thalassemia carriers from those with iron deficiency anemia.
03Top
#03
Evaluation of microcytosis.
Van Vranken Michele · American family physician · 2010
Review
48
This study evaluated microcytosis, often found incidentally in patients. Researchers found that low ferritin levels suggest iron deficiency, and emphasized the importance of assessing total iron-binding capacity and other iron parameters to determine the cause of microcytosis.
Key findings
- 01Researchers found that microcytosis is usually discovered incidentally during blood tests.
- 02They observed that low ferritin levels indicate iron deficiency, which is often due to blood loss, primarily from the gastrointestinal tract.
- 03The study noted that additional tests may be needed if ferritin levels are not low to determine the cause of microcytosis.
04
#04
Genome-wide meta-analysis of iron status biomarkers and the effect of iron on all-cause mortality in HUNT.
Meta-AnalysisInfluence3.0
33
This genome-wide meta-analysis examined iron status biomarkers and their effects on all-cause mortality. Researchers found evidence of harmful effects associated with increased serum iron and transferrin saturation, contributing to understanding the genetic factors influencing iron status.
05
#05
Blood biomarker profiles and exceptional longevity: comparison of centenarians and non-centenarians in a 35-year follow-up of the Swedish AMORIS cohort.
Murata Shunsuke, et al. · GeroScience · 2024
HumanInfluence3.0
31
This study compared blood biomarker profiles of centenarians and non-centenarians over a 35-year period. Researchers found that higher levels of iron and total cholesterol, along with lower levels of total iron-binding capacity, were associated with reaching age 100. The study highlighted that centenarians exhibited more favorable biomarker values as they aged.
Key findings
- 01Higher levels of total cholesterol and iron, along with lower levels of glucose and other biomarkers, were linked to reaching age 100.
- 02Centenarians showed consistent and favorable biomarker profiles starting from age 65.
- 03Differences in biomarker values between centenarians and shorter-lived individuals indicate that genetics and lifestyle factors may play a significant role in longevity.
06
#06
Revisiting Iron Metabolism, Iron Homeostasis and Iron Deficiency Anemia.
Review
29
This review examined iron deficiency anemia (IDA), a common condition affecting various populations. Researchers found that IDA is characterized by low serum iron, decreased transferrin saturation, and increased total iron binding capacity. They emphasized the importance of identifying underlying causes for effective management.
07
#07
Microcytic anemia.
ReviewInfluence1.0
10
This article focused on microcytic anemia, primarily caused by iron deficiency. Researchers found that low serum ferritin is the best indicator for diagnosing iron deficiency anemia, and emphasized the need to investigate underlying causes when anemia is detected.
08
#08
Causal Association of Iron Status With Functional Outcome After Ischemic Stroke.
HumanInfluence1.0
8
Researchers investigated the causal relationship between iron status and functional outcomes after ischemic stroke. They found that higher levels of total iron binding capacity and serum iron were associated with poorer functional outcomes, suggesting a potential modifiable risk factor.
09
#09
Clinical Significance of Serum Iron Metabolism-Related Markers in Patients with Nasopharyngeal Carcinoma.
Human
7
This study assessed iron metabolism in nasopharyngeal carcinoma patients, finding lower levels of serum iron, TIBC, and transferrin compared to healthy controls. Researchers observed that the degree of iron deficiency correlated with tumor burden and metastasis.
10
#10
Appropriate Method of TIBC Estimation in Reference to Serum Transferrin Levels.
Human
7
Researchers compared different methods for estimating total iron binding capacity (TIBC) and their correlation with serum transferrin levels. They found that the direct method of TIBC estimation showed a strong positive correlation with serum transferrin, making it the most reliable method.
Publication Trend
Research publications about TIBC over time
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