My son is 3+ Dr told me to do hb test I does sahli hb test(capillary) the reading will be 7 gm i again does the same test(sahli) next month reading will be 7.4 gm. then I consult other paediatrician he advice me to does CBC blood test(vein) from a good laboratory result came and hb is 10 gm,i m very much confused first Dr. says hb is low other told that in this particular age hb is 10-12 gm and he recommended tonoferon iron syrup.i already gave the iron syrup for two months, a very worrying situation for me and I m totally confused, kindly told me about both the blood tests and why there is variation and which diet is suitable..