I-INR yokujiya kwegazi ibizwa nangokuthi i-PT-INR ngokwezokwelapha, i-PT yisikhathi se-prothrombin, kanti i-INR isilinganiso esijwayelekile samazwe ngamazwe. I-PT-INR iyinto yokuhlola elebhu futhi ingenye yezinkomba zokuhlola umsebenzi wokujiya kwegazi, enenani elibalulekile lokubhekisela emisebenzini yezokwelapha.

Ibanga elijwayelekile le-PT liyi-11s-15s kubantu abadala, kanye ne-2s-3s ezinganeni ezisanda kuzalwa. Ibanga elijwayelekile le-PT-INR kubantu abadala liyi-0.8-1.3. Uma kusetshenziswa imithi yokulwa nokuqina kwegazi, njenge-warfarin sodium tablets, kunconywa ukuthi i-PT-INR ilawulwe ku-2.0-3.0 ukuze kufezwe umphumela ophumelelayo we-anticoagulant. Amaphilisi e-warfarin sodium avame ukusetshenziswa njengemithi yokulwa nokuqina kwegazi ekwelapheni i-deep vein thrombosis noma isifo se-thrombotic esibangelwa yi-atrial fibrillation, isifo se-valvular, i-pulmonary embolism, njll. I-PT-INR iyinkomba ebalulekile yokuhlola umsebenzi wokuqina kwegazi emzimbeni, futhi futhi iyisisekelo sodokotela sokulungisa umthamo wamaphilisi e-warfarin sodium. Uma i-PT-INR iphezulu kakhulu, ikhombisa ingozi eyengeziwe yokopha. Uma izinga le-PT-INR liphansi kakhulu, lingabonisa ingozi yokuqhekeka kwegazi.

Uma kuhlolwa i-PT-INR, ngokuvamile kuyadingeka ukuthatha igazi elisemithambo yegazi. Le ndlela ayinayo imfuneko ecacile yokuzila ukudla, futhi iziguli akudingeki zikhathazeke ngokuthi zingadla noma cha. Ngemva kokukhipha igazi, kunconywa ukusebenzisa i-swab yekotini ehlanzekile ukuze kumiswe ukuphuma kwegazi, ukuze kugwenywe amazinga e-PT-INR amaningi, ukuqina okungekuhle kuzobangela ukuminyana ngaphansi kwesikhumba.