test biologice:Hgb.Ht-anemie,MCV,niv serice de Fe,Ca,Mg,folati, B12,amilaze,transaminaze, timp de protombina,hipokalemie,hipoCa,hipoMg,acidoza met,hipoprot,hipoalb,niv serice scazute de trigliceride,colesterol alfa si beta caroten,VSH crescut in boala Crohn si Whipple.