Ko te waikawa tetraacetic Ethylenediamine (EDTA, te taumaha molecular 292) me tona tote he momo waikawa polycarboxylic amino, ka taea te tarai i nga katote konupūmā i roto i nga tauira toto, te chelate konupūmā, te tango ranei i te waahi tauhohenga konupūmā, ka aukati me te whakamutu i te coagulation endogenous, exogenous ranei. te tukanga, kia kore ai e pupuhi nga tauira toto.E pa ana ki te whakamatautau toto toto whanui, kaua ki te whakamatautau coagulation me te whakamatautau mahi platelet, me te whakatau i te katote konupūmā, te katote konutai, te katote konutai, te katote rino, te phosphatase alkaline, te creatine kinase me te leucine aminopeptidase me te whakamatautau PCR.