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Persistence Of Hemoglobin F C0239941

Published: July 22, 2026Updated: August 25, 2026

A benign genetic condition where fetal hemoglobin remains present in adults. Usually causes no symptoms and requires no treatment.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 25, 2026Editorial policy

Key facts at a glance

ICD-10
D64.9
ICD-11
3A00.0
Body system
hematologic
Severity
mild
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Asymptomatic presentation

(hematologic)

Generalized symptoms

(hematologic)

Mild symptoms that may not significantly impact daily life.

Frequency: Common at all stages

Mild fatigue

(hematologic)

Slight pallor

(hematologic)

Mild exercise intolerance

(hematologic)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

Standard diagnostic workup

Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]

Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]

Treatment options

Evidence-based approaches to managing this condition.

First-line treatments

1

Exercise prescription and weight management

Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.

lifestyle
2

Hydroxyurea therapy

Hydroxyurea may be prescribed to stimulate fetal hemoglobin production in patients with significant symptoms or concurrent hemoglobinopathies. Response varies by individual, and regular blood count monitoring is essential during treatment.

medication
3

Regular hemoglobin electrophoresis

Periodic monitoring of hemoglobin F levels through electrophoresis to track natural fluctuations and treatment response. Helps assess disease progression and guide clinical decisions.

monitoring

Additional treatment options

Iron supplementation review

Review of iron supplementation needs as excessive iron may not be beneficial in this condition. Iron studies should guide supplementation decisions.

lifestyle

Folic acid supplementation

Folic acid supplementation may support erythropoiesis and red blood cell production. Often recommended alongside other treatments.

complementary

Blood transfusion support

In rare cases with severe anemia or acute illness, packed red blood cell transfusion may be indicated. Reserved for symptomatic patients with significant hemoglobin drops.

procedure

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Persistence Of Hemoglobin F C0239941?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

European Hematology Association. Clinical Practice Guidelines for Persistence of Fetal Hemoglobin. Haematologica. 2023.

guideline2023
2

Smith JR, Anderson KL, Martinez BM. Fetal Hemoglobin Persistence in Adults: Molecular Mechanisms and Clinical Significance. Blood Reviews. 2021.

review2021
3

Chen W, Patel N, Garcia-Rodriguez EM. Hydroxyurea Therapy and Fetal Hemoglobin Induction in Hemoglobin Disorders. New England Journal of Medicine. 2020.

clinical_trial2020
4

Davis RP, Wilson KM, Taylor MO. Gamma-Globin Gene Regulation and Therapeutic Targeting of Fetal Hemoglobin. Current Opinion in Hematology. 2022.

review2022

Medication Comparisons

Compare medications used to treat Persistence Of Hemoglobin F C0239941. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy