II. Calculation
- TFS = 100 x Serum Iron (ug/dl) / TIBC (ug/dl)
III. Normal
- Range: 15% to 55%
IV. Decreased
- Chronic Iron Deficiency Anemia
- Chronic infection
- Advanced malignancy
- Collagen-Vascular Disease
- Uremia
- Third trimester of pregnancy
V. Increased
- Hemochromatosis and other Iron Overload
- Hemolytic Anemia
- Starvation
- Nephrotic Syndrome
- Cirrhosis
- Acute Viral Hepatitis
- Thalassemia minor
- Megaloblastic Anemia
- Aplastic Anemia or Sideroblastic Anemia
VI. References
- Ravel (1995) Clinical Lab Medicine, Mosby, p. 662