Final Answer:
An elevation in the HbA2 suggests an increased presence of hemoglobin A2 in the blood, which is typically indicative of beta-thalassemia trait or, in some cases, delta-beta thalassemia.
Step-by-step explanation:
The term HbA2 refers to hemoglobin A2, a specific type of hemoglobin. An elevation in HbA2 levels suggests an increase in the proportion of hemoglobin A2 in the blood.
This indicates that a higher percentage of the total hemoglobin in the blood is composed of HbA2. Indicative of Beta-Thalassemia Trait, Elevated HbA2 levels are commonly associated with beta-thalassemia trait, a genetic blood disorder characterized by reduced synthesis of beta globin chains.
In some cases, an elevation in HbA2 may also be suggestive of deltabeta thalassemia, another variant of thalassemia.