<unk>  is a hereditary disease allowing for a preventative treatment by carrier screening and prenatal diagnosis. It can be prevented if one parent has normal genes, giving rise to screenings that empower carriers to select partners with normal hemoglobin. A study aimed at detecting the genes that could give rise to offspring with sickle cell disease. Patients diagnosed with<unk>  have MCH ≤ 26 pg and an RDW < 19. Of 10,148 patients, 1,739 patients had a hemoglobin phenotype and RDW consistent with<unk> . After the narrowing of patients, the HbA2 levels were tested presenting 77 patients with<unk> . This screening procedure proved insensitive in populations of West African ancestry because of the indicators has high prevalence of alpha<unk> assemia. Countries have programs distributing information about the reproductive risks associated with carriers of haemoglobinopathies.<unk> assemia carrier screening programs have educational programs in schools, armed forces, and through mass media as well as providing counseling to carriers and carrier couples. Screening has shown reduced incidence; by 1995 the prevalence in Italy reduced from 1:250 to 1:4000, and a 95% decrease in that region. The decrease in incidence has benefitted those affected with<unk> assemia, as the demand for blood has decreased, therefore improving the supply of treatment.
Beta thalassemia
Thalassemia
Delta-beta thalassemia
Alpha-thalassemia
Sickle cell-beta thalassemia
Paroxysmal nocturnal hemoglobinuria
Diamond–Blackfan anemia
Hereditary spherocytosis