<prompt> Patient with MCV 60, Hb - 5 gm MCHC-20 PCV 32 , causes of anemia in him can be -PhenytoinBlind loop syndromeHook worm infectionCRF  <response>: Here Hb is reduced ,MCV belw 80fl, MCHC is diminished below 20gdL. All this features correlates with iron deficiency anemia.From the above options the cause of iron deficiency is hook worm infestation .Reference :Harsh mohan textbook of pathology sixth edition pg no 299. 