MeSH definition : An adult hemoglobin component normally present in hemolysates from human erythrocytes
in concentrations of about 3%. The hemoglobin is composed of two alpha chains and
two delta chains. The percentage of HbA2 varies in some hematologic disorders, but
is about double in beta-thalassemia.;
MeSH synonym : a2, hemoglobin;
CISMeF synonym : hemoglobin a-2;
MeSH CAS label : hemoglobin A2;
Registry Number MeSH : 9034-53-1;
MeSH annotation : /urine: coord NIM with HEMOGLOBINURIA (IM); DF: HBA2; /urine: coordinate with HEMOGLOBINURIA;
An adult hemoglobin component normally present in hemolysates from human erythrocytes
in concentrations of about 3%. The hemoglobin is composed of two alpha chains and
two delta chains. The percentage of HbA2 varies in some hematologic disorders, but
is about double in beta-thalassemia.