detection of the presence of, or exposure to, a transmissible agent in blood, blood components, cells, tissues or organs, or in any of their derivatives, in order to assess their suitability for transfusion, transplantation or cell administration;
chun a bhrath an bhfuil oibreán in-tarchurtha i bhfuil, i gcomhábhair fola, i gcealla, i bhfíocháin nó in orgáin nó an nochtadh dóibh, nó chun a bhrath an bhfuil in aon cheann dá ndíorthaigh nó an nochtadh dóibh, chun a n-oiriúnacht maidir le haistrithe, trasphlandaithe nó riar ceall a mheas.