I-INR yokuxinana kwegazi ikwabizwa ngokuba yi-PT-INR ngokwezonyango, i-PT lixesha le-prothrombin, kwaye i-INR sisilinganiselo somgangatho wamazwe ngamazwe. I-PT-INR yinto yovavanyo lwelabhoratri kwaye yenye yeempawu zokuvavanya umsebenzi wokuxinana kwegazi, enexabiso elibalulekileyo kwireferensi kunyango.

Uluhlu oluqhelekileyo lwe-PT yi-11s-15s kubantu abadala, kunye ne-2s-3s kwiintsana ezisandul’ ukuzalwa. Uluhlu oluqhelekileyo lwe-PT-INR kubantu abadala yi-0.8-1.3. Ukuba kusetyenziswa amayeza okulwa nokugabha igazi, njengeetablethi ze-warfarin sodium, kucetyiswa ukuba uluhlu lwe-PT-INR lulawulwe kwi-2.0-3.0 ukuze kufezekiswe isiphumo esisebenzayo sokulwa nokugabha igazi. Iitablethi ze-warfarin sodium zisetyenziswa rhoqo njengee-anticoagulants zonyango kunyango lwe-deep vein thrombosis okanye isifo se-thrombotic esibangelwa yi-atrial fibrillation, isifo se-valvular, i-pulmonary embolism, njl. I-PT-INR luphawu olubalulekileyo lokuvavanya umsebenzi wokugabha igazi emzimbeni, kwaye ikwasisiseko sokuba oogqirha balungise idosi yeetablethi ze-warfarin sodium. Ukuba i-PT-INR iphezulu kakhulu, ibonisa umngcipheko owongezelelekileyo wokopha. Ukuba inqanaba le-PT-INR liphantsi kakhulu, linokubonisa umngcipheko wokugabha igazi.

Xa kuvavanywa i-PT-INR, ngokuqhelekileyo kuyimfuneko ukuthatha igazi eliphuma kwimithambo yegazi. Le ndlela ayinayo imfuneko yokuzila ukutya ecacileyo, kwaye izigulane azidingi kukhathalela ukuba zingatya okanye azityi. Emva kokuba igazi litsaliwe, kuyacetyiswa ukuba kusetyenziswe i-cotton swab engenazintsholongwane ukunqanda ukopha, ukuze kuthintelwe amanqanaba aphezulu e-PT-INR, ukungakwazi ukubopha kakuhle kuya kubangela ukudumba okungaphantsi kolusu.