Hello. As far as the scenario is concerned from the laboratory investigation reports which you mentioned here, there is not much to get alarmed about, since this slight variation can be due to number of different factors and even in difference of reports from different laboratory which is conducting this. Such slight variation is accounted for, since he has been ill for quite some time now. However what you need to be alarmed about is any drastic changes in blood reports, any changes in dietary intake, any progressive weight loss
, any changes in skin color and any presence of fever
. If any such symptoms persists, consult with your treating doctor again. Regards.