Diana Swales

lymphocytosis is also an indication of an infection so that might be the cause of the difference. In the one you had a slight infection and the other you didnt

If your son is only 5 and his sister is diagnosed celiac disease, is it a possibility that he has been eating a majority gluten free diet with his sister. If this is the case his result would be low or negative. The choice would be yours as to whether to put him in onto a full gluten diet for 4 -6 weeks, handle and NOTE the changes in his diet...