Umuyoboro wijimye wintwari nintwari yikizamini cya sisitemu ya hematologiya, kubera ko aside yitwa Ethylenediaminetetraacetic aside (EDTA) irimo irashobora gukonjesha neza ioni ya calcium mu cyitegererezo cyamaraso, igakuramo calcium mukibanza cyayitwaye, ikabuza kandi igahagarika inzira ya coagulation endogenous cyangwa extrinsic coagulation kugirango wirinde kwishyira hamwe kwicyitegererezo, ariko irashobora gutuma lymphocytes igaragara nuclei imeze nkururabyo, kandi irashobora no gutera imbaraga za EDTA ziterwa na platine.Kubwibyo, ntishobora gukoreshwa mubushakashatsi bwa coagulation hamwe no gupima imikorere ya platel.Mubisanzwe, turahindura hanyuma tukavanga amaraso ako kanya nyuma yo gukusanya amaraso, kandi ingero nayo igomba kuvangwa mbere yikizamini, kandi ntishobora gushyirwaho.