Ko te whakatau i te kore pai o te mahi toto totoka ka arotakehia e te āhua o te toto, me ngā whakamātautau taiwhanga. E rua ngā āhuatanga matua, ko tētahi he toto ohorere, ko tētahi he toto i muri i te whara, i te pokanga rānei.

Kāore i te pai te mahi toto toto, arā, he raruraru kei te tauwehe toto toto, kua heke te maha, kua rerekē rānei te mahi, ā, ka puta he raupapa o ngā tohu toto. Ka puta pea te toto ohorere, ā, ka kitea te purpura, te ecchymosis, te epistaxis, te toto kapia, te hemoptysis, te hematemesis, te hematochezia, te hematuria, me ētahi atu i roto i te kiri me ngā kiriuhi mucous. I muri i te whara, i te pokanga rānei, ka piki ake te nui o te toto, ā, ka roa ake te wā toto.

Mā te tirotiro i te wā prothrombin, te wā prothrombin kua whakahohehia ā-wāhanga, te wā thrombin, te kukū fibrinogen me ētahi atu mea, ka taea te tirotiro mēnā kāore i te pai te mahi toto totoka, ā, me tātaritanga te take motuhake.