What is considered abnormal retic count for a 70 yrs man with macrocytic anemia? his hb is 9. his retic count .85% and retic shape is normal.

Depends.: Retic count should be 1% with a normal Hgb. For a 70 y/o male, that would be about 13. As Hgb goes down young red cells (retics) should go up to correct the deficit. In this case about 2.5 - 3% at least. 0.85% shows poor RBC production. With macrocytosis (large RBCs) consider B12, folate (folic acid) deficiency, certain drugs, liver disease, low thyroid, myelodysplastic syndrome & other bone marrow disease