<prompt> Formula used for estimation of the total iron requirement is :4 x body weight kg x Hb deficit gdl4.4 x body weight kg x Hb deficit gdl0.3 x body weight kg x Hb deficit gdI3.3 x body weight kg x Hb deficit gdl  <response>: Ans. is b i.e. 4.4 x body weight kg x Hb deficit Total iron requirement is calculated by the following formulae : 4.4 X body weight kg X Hb deficit gdI 0.3 x weight lb x of Hb deficit 250mg elemental iron or each gm of Hb deficit Note : Weight in kg wt in lb x 2.2 