my 10year old child had done peripheral smear last year when he was suffering from viral fever, it shows hypochromic megaloblastic anemia with active lymphocytes.his hb count is only 8.4.now his hb is 12.2 .he advised me to take bone marrow test.but i dis agree.is this smear shows any serious problem
Megaloblastic anemia can be due to a deficiency in a vitamin, B12.  Hypo chromic just means low iron content.  The only information here for his current test is his HGB which appears to have recovered after the illness which caused it to decrease earlier.  Some viral illnesses can slow down red cell production, but recovery is spontaneous.  To answer your question about the bone marrow biopsy we would need more information about his labs and his clinical condition.  This is not a recommendation a doctor makes lightly, so he must have a good reason.  Get a second opinion if you must but be sure to it quickly.