Hemoglobin F
- Sample Type
- Standard
- Fasting
- No
- Unit
- %
Hemoglobin F (HbF), or fetal hemoglobin, is the primary oxygen transport protein in the human fetus, characterized by its high affinity for oxygen. In the context of Hemoglobin Electrophoresis, it is measured to diagnose various hemoglobinopathies. While it should be less than 1-2% in adults, elevated levels are significant markers for Beta-Thalassemia, Sickle Cell Anemia, or Hereditary Persistence of Fetal Hemoglobin (HPFH). Monitoring HbF is also crucial for patients on Hydroxyurea therapy, as the drug's efficacy is often measured by its ability to induce HbF production.
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Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
Elevated HbF can be a benign genetic variation (HPFH) or a compensatory mechanism for severe anemia. Pregnancy can naturally cause slight elevations. Interpretation requires correlation with the full electrophoresis panel (HbA, HbA2, and HbS levels).
Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.
Clinical References
Source-of-truth databases and clinical guidelines for Hemoglobin F:
Official Sources
- Sickle cell anaemia therapy in 2025 - PMCpmc.ncbi.nlm.nih.gov
Research & Guidelines
- PubMed: Hemoglobin F Clinical GuidelinesNCBI / PubMed
Related Indicators
Medically Reviewed by Dr. Binoy Babu, MBBS
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Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.
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