Tf inonyanya kuwanikwa muplasma, avhareji yemukati inenge 1.20 ~ 3.25g/L.Muvanhu vane hutano tsvina, pane inenge isina kuvapo.Kana digestive turakiti richibuda ropa, iyo Tf iri muserum inoyerera ichipinda mugastrointestinal turakiti uye yakaburitswa netsvina, yakawanda mutsvina yevarwere vanobuda ropa.Naizvozvo, fecal Tf inoita basa rinodikanwa uye rakakosha pakuona kubuda kweropa.Iyo kiti ndeye yakapfava, inoonekwa yemhando bvunzo inoona Tf mutsvina yemunhu, ine yakakwirira yekuona senitivity uye yakasimba chaiyo.Muedzo wakavakirwa pane yakakwira yakapetwa kaviri masoja ekudzivirira chirwere sandwich reaction musimboti uye goridhe immunochromatographic assay yekuongorora matekiniki, inogona kupa mhedzisiro mukati memaminitsi gumi nemashanu.