Can HPLC detect alpha thalassemia?
Both HPLC and CE can detect alpha thalassemia in newborns, since various levels of Hb Barts (depending on the number of alpha-gene deletions) will be present in the sample.
What is HPLC for hemoglobin?
Hemoglobin (Hb) electrophoresis by HPLC is used to identify the different types of hemoglobin present in the blood. Hemoglobin is a protein present inside the red blood cells that functions to transport oxygen to the tissues and organs of the body.
What is difference between HbA and HbA2?
Adult hemoglobin A (HbA) has two alpha and two beta chains (alpha2 beta2), whereas hemoglobin A2 (HbA2) has two alpha and two delta chains (alpha2 delta2). At birth, HbF accounts for approximately 80 percent of hemoglobin and HbA accounts for 20 percent.
What is the most common hemoglobinopathy?
Sickle cell disease, the most common hemoglobinopathy, occurs when at least one HbS variant is present with a second pathogenic beta globin variant; the variants result in abnormal Hb. For more information on pathogenic Hb variants, see the Human Hemoglobin Variants and Thalassemias database.
What is the normal range of HPLC test?
In this study, the HPLC hemoglobin reference ranges derived from 200 normal African American adults are expressed as follows: Hb A mean 93.6 percent (s.d. 1.3, ranges 89.8 to 95.2), Hb A1 mean 2.0 percent (s.d. 0.6, ranges 0.8 to 5.2), Hb F mean 3.2 percent (s.d. 0.7, ranges 1.7 to 5.3) and Hb A2 mean 1.2 percent (s.d. …
What happens if HbA2 is high?
Hb A2 levels tend to increase in conditions that delay nuclear maturation of red cell precursors. These conditions are also associated with increased MCV. The most common cause of this phenomenon is megaloblastic anemia due to folate and/or vitamin B12 deficiency.
What if HbA2 is low?
Low Hb A2 percentages were found in iron-deficiency anemia, hereditary persistance of fetal hemoglobin, and Hb H disease. In iron-deficiency anemia, the lowest levels of Hb A2 were observed in association with the most severe anemia.
What are the symptoms of hemoglobinopathies?
Hemoglobinopathies are inherited conditions that affect the number or shape of the red blood cells in the body….Early signs of a hemoglobinopathy include:
- Sleeping longer or more often.
- Tiredness.
- Shortness of breath.
- Pain or swelling in the hands or feet.
- Cold hands or feet.
- Pale skin.
What are the two types of hemoglobinopathies?
Results. The hemoglobinopathies encompass all genetic diseases of hemoglobin. They fall into two main groups: thalassemia syndromes and structural hemoglobin variants (abnormal hemoglobins). α- and β-thalassemia are the main types of thalassemia; the main structural hemoglobin variants are HbS, HbE and HbC.