Hi, My father age 74, facing low Hemoglobin level as 8.2. In December we did complete check up in which HB was 5.7 and post fasting blood sugar level was 152. Our Dr suggested to take b12 injection for a month for once in gap of 3 days with dexorange as supplement. After one month dose HB came to 9.7 and our Dr stopped the dexorange and continued b12 injection for 2 month in a gap of 15 days. After this HB didn't improve it came to 8.2. Now post fasting blood sugar level is 110, Lipid profile is normal, liver function tests is normal, thyroid test is normal. So we took second opinion last month he gave medicine for 15 days and 1ml b12 injection for every alternate days and Meconery 1500 and livogen as iron and vit b tablets . After 15 days CBC test done HB level is 8.2.  He is having rich iron food fruits on daily basis since 4 month. Now our second Dr refered to Hematologist and suggesting to have endoscopy and bone marrow test. Got so worried. Please guide me further.