Indicator Explainer
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).
This page explains what the indicator is and how results are interpreted in general terms. Reference ranges depend on the laboratory, the method, and your own situation — no single “normal value” applies to everyone. This page is health information, not a diagnosis. For symptoms, treatment, or urgent concerns, contact a healthcare professional.
When it is tested
Source: National Cancer Institute, NCI Thesaurus 26.09d, C172948. NCI definition, reproduced without modification under CC BY 4.0. Source identity and definition checked automatically on 2026-10-20. No individual clinical interpretation or human reviewer is asserted.
Reading results
Reference intervals and interpretation depend on the laboratory, specimen, method and clinical context. This source definition is educational information; it does not establish a diagnosis, product approval or suitability for an individual.
Also Known As
References
- NCI Thesaurus 26.09d — Hemoglobin F (C172948)
- Source: National Cancer Institute, NCI Thesaurus 26.09d, C172948. NCI definition, reproduced without modification under CC BY 4.0.
- Unravelling the High-Hemoglobin-F Sickle Cell Disease Phenotype: Studies among Kuwaiti Patients. — Med Princ Pract, 2026-09-23 (PMID 42776914; literature)
- Preclinical evaluation of entecavir as a fetal hemoglobin inducer using in vitro, in vivo, network pharmacology, and molecular docking approaches. — Biomed Pharmacother, 2026-09-04 (PMID 42697041; literature)
- Unlocking thalidomide response as a hemoglobin F augmentation agent in transfusion-dependent β-thalassemia: the genetic impact of BCL11A, HBS1L-MYB, and XmnI polymorphism. — Diagn Pathol, 2026-07-07 (PMID 42415097; literature)
- Controlling Hemoglobin F Expression in Sickle Cell Disease and β-thalassemia. — Transfus Med Rev, 2026-06-11 (PMID 42705820; literature)
- Fecal hemoglobin concentration as a risk stratification tool for advanced colorectal neoplasm in a community-based screening program. — Front Oncol, 2026-05-20 (PMID 42245725; literature)
- Fecal Hemoglobin-Guided Precision Postpolypectomy Surveillance Within the Current Framework: A Four-Million-Participant Fecal Immunochemical Test-Based Screening Study. — Gastroenterology, 2026-04-01 (PMID 41932453; literature)