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Doctor insights on: Fetal Hemoglobin Test

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Dr. Vijay Sankaran
114 doctors shared insights

Fetal Hemoglobin (Definition)

Is the main hemoglobin that transport oxygen in the fetus during the last seven months of development in the uterus and in the newborn until roughly 6 months old. , fetal hemoglobin is able to bind oxygen with greater affinity than the adult hemoglobin, giving the developing fetus better access to oxygen ...Read more


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What are the risks for the patient in undergoing a fetal hemoglobin test?

What are the risks for the patient in undergoing a fetal hemoglobin test?

Blood test: This is just a blood test. The risks are the same for any blood testing, such as bruising and the needle site. ...Read more

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Emily Lu Dr. Lu
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How common is the inherited persistence of fetal hemoglobin?

Emily Lu Dr. Lu
1 doctor agreed:
How common is  the inherited persistence of fetal hemoglobin?

Difficult to measure: This is difficult to measure because in most people with inherited persistence of fetal hemoglobin are entirely asymptomatic. However, population studies have shown that about 10% of the population has been seen to have some persistence of fetal hemoglobin but in varying levels (from 0.8% of cells containing the fetal hemoglobin up to about 10% fetal hemoglobin levels). ...Read more

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What is the definition or description of: fetal hemoglobin?

What is the definition or description of: fetal hemoglobin?

Hb F: Is the main hemoglobin that transport oxygen in the fetus during the last seven months of development in the uterus and in the newborn until roughly 6 months old. , fetal hemoglobin is able to bind oxygen with greater affinity than the adult hemoglobin, giving the developing fetus better access to oxygen from the mother's bloodstream. ...Read more

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How to find how much larger kc is for fetal hemoglobin than adult hemoglobin?

Unclear question: Fetal and adult hemoglobin are about the same size. Fetal Hb binds oxygen more tightly. ...Read more

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I have elevated levels of fetal hemoglobin. What can cause this? I am not pregnant. Does it point to a disorder?

I have elevated levels of fetal hemoglobin. What can cause this? I am not pregnant. Does it point to a disorder?

Not necessarily: Elevated fetal hemoglobin may represent what is known as persistence of fetal hemoglobin. It would be helpful to know what the percentages of various hemoglobins are in your electrophoresis, This may be normal for YOU or it could represent a topic which needs investigation. Please speak to your doctor. Good luck! ...Read more

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Some adults with sickle cell anemia have high levels of fetal hemoglobin. Any reason for this?

Some adults with sickle cell anemia have high levels of fetal hemoglobin. Any reason for this?

Epigenetics and drug: We know that sickle cell patients that have increased Hemoglobin F typically have less sickle cell complications. This is the basis for using Hydroxyurea in sickle cell patients. Some individuals have elevated Hemoglobin F levels due to differences in the genetic region of the beta and gamma globin genes that prevent the normal shutting-off of the gamma globin gene. This leads to increased HGB f. ...Read more

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What kind of conditions does a hemoglobin test detect?

What kind of conditions does a hemoglobin test detect?

Anemia: A hemoglobin test measures if you are anemic or not, i.e. If you have enough red blood cells in your circulatory system. Anemic people have low hemoglobin levels. ...Read more

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How worried should I be about an abnormal hemoglobin test resul that has to be retested?

How worried should I be about an abnormal hemoglobin test resul that has to be retested?

Varies: There are in excess of several hundred recorded mutations in the hemoglobin molecules & some are little more than a curiosity and some (sickle cell) could have significant implications.The screening process just selects those who need to be looked at more closely. I would not spend a lot of emotional energy at this point. Get more facts first. ...Read more

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How do home use hemoglobin test meters work?

How do home use hemoglobin test meters work?

Hemoglobin analyzer: If you one of those machine it work almost like the blood sugar test for diabetes. ...Read more