Hemoglobin A
- Sample Type
- Standard
- Fasting
- No
- Unit
- %
Hemoglobin A (HbA) is the predominant form of hemoglobin in adults (alpha2-beta2). In the context of HPLC electrophoresis, quantifying HbA is essential for diagnosing hemoglobinopathies and thalassemias. A reduction in HbA percentages indicates that other forms (like HbF, HbA2, or variant hemoglobins like HbS) are occupying a larger proportion of the total hemoglobin, which is a hallmark of Beta-Thalassemia or Sickle Cell Trait/Disease.
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Check Your Result
Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
Recent blood transfusions will normalize HbA levels, potentially masking an underlying thalassemia or sickle cell condition. HPLC results must be interpreted alongside a full CBC and peripheral smear.
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 A:
Official Sources
- Hemoglobin test - Mayo ClinicMayo Clinic
- Hemoglobin Test: MedlinePlus Medical TestMedlinePlus
Research & Guidelines
- PubMed: Hemoglobin A Clinical GuidelinesNCBI / PubMed
Related Indicators
Medically Reviewed by Dr. Binoy Babu, MBBS
Board Certified Doctor • 10+ Years Clinical Experience
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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