Beta thalassemia (HBB) gene analysis is a molecular genetic test that sequences the HBB gene to identify mutations responsible for beta thalassemia, a hereditary blood disorder characterized by reduced or absent production of the beta-globin chains in hemoglobin, leading to varying degrees of anemia. This test can confirm a clinical diagnosis, detect carriers, and help determine the specific genetic variants causing the disease, which is essential for prognosis, treatment planning, and family counseling. The analysis typically uses next-generation sequencing (NGS) or full gene sequencing to cover all relevant regions of the HBB gene, ensuring high sensitivity in detecting both common and rare pathogenic variants.