I-TF ikakhulu ikhona kwiplasma, umxholo ophakathi malunga 1.20 ~ 3.25G / l. Kwimpilo yabantu abanempilo, phantse akukhobukho. Xa i-phecana yokugaya umphetho, i-TF kwi-serum ingena kwiphecana le-gestrointenal kwaye lakhupha i-faeces, lininzi kwizigulana ezopha. Ke ngoko, i-tf fecal tf idlala indima eyimfuneko neyamsebenzi ekufumaneni ukopha kwe-gestrointel. Ikhithi iluvavanyo olulula, olubonakalayo olufumana i-TF kwi-TF kwi-TF kwi-TF, ineemvakalelo eziphezulu kunye nobuchule obuqinileyo. Uvavanyo olusekwe kwi-antiboding ephezulu ye-antibodies sandwich reamwich reamwich reamwich reamwich reewwich kunye neGenocromatographic Sturesgraphics, inokunika isiphumo ngaphakathi kwemizuzu eli-15.