Binciken ciwon daji yana nufin gano kansa kafin bayyanar cututtuka. Wannan na iya haɗawa da gwajin jini, gwajin fitsari, gwajin DNA, wasu gwaje-gwaje, ko hoton likita . Amfanin dubawa cikin sharuddan rigakafin ciwon daji, gano wuri da wuri da magani na gaba dole ne a auna shi da kowane lahani. Nunawa na duniya, wanda kuma aka sani da gwajin taro ko tantance yawan jama'a, ya haɗa da tantance kowa, yawanci a cikin takamaiman rukunin shekaru. Zaɓen tantancewa yana gano mutanen da aka san suna cikin haɗarin kamuwa da cutar kansa, kamar mutanen da ke da tarihin iyali na ciwon daji. Nunawa na iya haifar da sakamako mai kyau na ƙarya da hanyoyin ɓarna na gaba. Hakanan dubawa na iya haifar da sakamako mara kyau na ƙarya, inda aka rasa ciwon daji da ke wanzu. Rikici yana tasowa lokacin da ba a bayyana ba idan fa'idodin tantancewar sun zarce kasadar tsarin tantancewar da kanta, da duk wani gwaji da jiyya na bin diddigi. Gwaje-gwajen nunawa dole ne su kasance masu tasiri, lafiyayye, jurewa da kyau tare da ƙarancin ƙima na sakamako mara kyau na ƙarya .