Daim duab peb sab yog qhov tshwj xeeb tshaj yog rau qhwv ntau yam ntawm thaj chaw loj thiab qhov mob tsis meej ntawm tib neeg lub cev. Nws yog cov hnav khaub ncaws uas siv dav tshaj plaws. Cov pab kho mob ua ntej kawm thawj pab tswv yim los yog cov txheej txheem qhwv tuaj yeem siv nws los qhwv cov qhov txhab ntawm yuav luag txhua qhov ntawm lub cev, yog li yuav luag txhua cov khoom siv ua ntej tau nruab nrog cov ntaub qhwv tsis muaj voos.
Kev hnav khaub ncaws ntawm lub qhov txhab yuav tsum ua raws li lub hauv paus ntsiab lus ntawm kev ua haujlwm aseptic, nrog kev ua kom maj mam thiab khov kho. Cov khoom siv siv khaub ncaws hnav nquag muaj xws li cov ntaub qhwv, plaub hau plaub hau, plaub ceg, thiab lwm yam.