Changes in erythrocyte parameters are well known both β-thalassemia minor (BTM) and iron deficiency (ID) when either is present alone; however, to our knowledge, there has been no study showing the changes two conditions coexist. We herein assessed BTM with coexistent ID. The cases were divided into groups based on ferritin levels as ID+ ID−; group was then further hemoglobin (Hb) iron-deficien...