What are your next steps in workup for a pediatric patient with microcytic anemia with normal iron levels, normal hemoglobin analysis, and normal alpha thal trait testing?

It is a bit difficult to answer this without more information like age, H&P, the actual blood counts, a description of the peripheral blood smear, and the quantitative results of hemoglobin HPLC. If iron deficient and the many different genotypes of thalassemia are excluded and there is no chronic d...