Ikhithi iyasebenza ekwelashweni kwangaphambili kwesampula okufanele ihlolwe, ukuze i-analyte kusampula ikhululwe ekubopheni kwezinye izinto, ukuze kube lula ukusetshenziswa kwama-in vitro diagnostic reagents noma amathuluzi okuhlola umhlaziyi.
I-ejenti yokukhululwa kwesampula yohlobo I ifanele amasampula egciwane,futhiI-ejenti yokukhululwa kwesampula yohlobo lwe-II ifanele amasampula ebhaktheriya nesifo sofuba.
