الوصف
In the healthy adult, Haemoglobin A is the most prevalent form of circulating Haemoglobin in the body, composed of two α-globin and two β-globin chains. The β-globin genes are found on chromosome 11, one gene on each chromosome. Thalassemia is a group of genetic disorders characterised by quantitative defects in globin chain synthesis. The subsequent absence or decrease of Haemoglobin production results in microcytosis with varying degrees of anaemia. These conditions are commonly found in people of Mediterranean, African, Middle Eastern, Indian, Chinese, or Southeast Asian origin. β-Thalassemia (Mediterranean Anaemia) is an autosomal recessive Haemoglobinopathy usually caused by a point mutation or a small deletion or insertion mutation in one of the β- globin (HBB) genes, leading to decreased or absent β- globin chain synthesis.
دواعي الإستعمال
Unbalanced production of α and β- globin molecules impairs erythropoiesis, leading to microcytic hypochromic anaemia. Severely affected individuals with Thalassemia major (bo-Thal) exhibit severe anaemia, retarded growth and hepatosplenomegaly early in life, delayed puberty and require regular transfusions and management to extend lifespan. Patients with Thalassemia intermedia (β+-Thal) have a later onset of symptoms, require less aggressive treatment, but may experience iron overload and perhaps cirrhosis. β-Thalassemia carriers (Thalassemia trait β+) are not expected to have adverse health effects beyond mild anaemia.
نوع العينة والكمية والشروط
2 ml EDTA Whole Blood Room Temperature
إحتياطات خاصة
Collect in EDTA vacutainer tube. Avoid contamination with DNA of phlebotomist. Avoid haemolysed samples. Do not freeze samples. Send tube unopened.
المعدل الطبيعي
As per Report