This test is done to make the diagnosis of type of thalassemias and hemoglobin variants Evaluation. It quantitates the percent of fetal hemoglobin and assists in the diagnosis of disorders with elevated levels of HbFA hemoglobinopathy evaluation is used to detect abnormal forms and/or relative amounts of hemoglobin, the protein found in all red blood cells that transports oxygen. Testing may be used for: Screening All states require that newborns be screened for certain hemoglobin variants. Prenatal screening is often performed on high-risk parents with an ethnic background associated with a higher prevalence of hemoglobin abnormality and those with affected family members. Screening may also be done in conjunction with genetic counseling prior to pregnancy to determine whether the parents are carriers. To identify variants in asymptomatic parents who have an affected child