is Haem +globin (iron+protein) and this is the oxygen
carrying capacity of red blood cells.If it is low that means you are anaemic.Hct means haematocrit value ,
there are various types of anaemias , most common is microcytic hypochromic or iron deficiency anemia
in which size or Rbc
is less and colour is less darker.Other measurments are MCV ( Mean corpouscular volume ) , MCH ( mean corposcular haemoglobin ) and MCHC( mean corposcular haemoglobin concentration ).
Leave this thing on your pathologist and lab people.If it low that means you are anaemic ,take lot of green vegetables and iron tablets.