diagnosed using tool has causal genotype has causal or contributing genetic variation Hemoglobin Trait Electrophoresis Hemoglobin O-Arab Trait Hb A/O-Arab Request inclusion into NCIT below "Hemoglobin Trait". Heterozygous Hemoglobin O-Arab Few but definitions not freely available Heterozygous Hb O-Arab The inheritance of hemoglobin O-Arab from one parent and a gene for normal adult hemoglobin (hemoglobin A) from the other parent. http://onlinelibrary.wiley.com/doi/10.1002/pbc.24414/pdf Hb AO-Arab HBB, GLU121LYS Hemoglobin Genotype AO-Arab