Biologically Active Substance
fetal hemoglobin
fe·tal he·mo·glo·bin
Subclass of:
Hemoglobin
Definitions related to fetal hemoglobin:
  • (hemoglobin f) A tetrameric complex of 2 molecules of hemoglobin subunit alpha (encoded by either the HBA1 or HBA2 gene) and 2 molecules of hemoglobin subunit gamma (encoded by either the HBG1 or HBG2 gene).
    NCI
    U.S. National Cancer Institute, 2021
  • (hemoglobin f) Fetal hemoglobin; major component of hemoglobin in the fetus; it has two alpha and two gamma polypeptide subunits in comparison to normal adult hemoglobin, which has two alpha and two beta polypeptide subunits.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • The major component of hemoglobin in the fetus. This HEMOGLOBIN has two alpha and two gamma polypeptide subunits in comparison to normal adult hemoglobin, which has two alpha and two beta polypeptide subunits. Fetal hemoglobin concentrations can be elevated (usually above 0.5%) in children and adults affected by LEUKEMIA and several types of ANEMIA.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
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