I-1) Ukunciphisa ukuthotywa kweeseli ezimhlophe zegazi kunye neeseli ezibomvu zegazi kunye nokubonelela ngengqibelelo yesampulu ngexesha lokugcinwa, ukuthutha kunye nokuqhutyelwa kweesampuli zegazi.
2) Xa kuthelekiswa neminye imithwalo yegazi, iyanciphisa i-hemolysis kwaye ikhulise imveliso ye-plasma emva kokugcinwa.
I-3) Ukugcinwa kweqondo lokushisa kwegumbi kunciphisa iindleko kunye nobunzima obunxulumene nokuthuthwa kwekhonkco elibandayo.
I-4) Akukho kulungiswa ngokukhawuleza kweplasma efunekayo.
Iityhubhu zokuqokelela igazi zisetyenziselwa ukuqokelela nokugcina iisampuli zegazi ixesha elide.Ezi zityhubhu zibonelela ngokuchanekileyo, ukuchaneka, isantya, ukhuseleko kunye nokulula ukusetyenziswa ngexesha leenkqubo zokuxilonga ezifana ne-liquid biopsy.I-Liquid biopsy yindlela engavakaliyo okanye enokungenelwa kancinci kwi-biopsy yotyando, evumela oogqirha ukuba baqonde ngamathumba ngokwenza uvavanyo oluthile kwiisampulu zegazi.