A hemoglobinopathy investigation on a 25-year-old female had the following results. What is the most likely diagnosis? Complete blood count 6.2 million RBC/mm3 (3.5-5.0) Hemoglobin 13.0 g/dL (11.5-15.0) MCV 62 fL (80-95) RBC morphology Target cells, microcytes Sickle solubility Negative Serum ferritin Within normal limits Serum iron Within normal limits Hemoglobin electrophoresis 91% A1 (97-100) 4.5% F (<1%) 4.5% A2 (<3%) What is the most likely diagnosis and why? Why is it important that serum iron and ferritin were measured? Is it likely that this patient is symptomatic?