He heterodimer a Cal, he mea tito mai i te MRP 8 me te MRP 14. Kei roto i te cytoplasm o ngā neutrophils, ā, kei runga i ngā kiriuhi pūtau mononuclear. He pūmua wāhanga whakapeka a Cal, he wāhanga pumau mō te wiki kotahi i roto i te paru tangata, ā, kua whakatauhia hei tohu mate puku mumura. He whakamātautau ā-tirotiro ngāwari te kete, he whakamātautau ā-whakamātautau ā-kanohi e kitea ai te cal i roto i te paru tangata, he tino aro ki te kite me te tino motuhake. Ko te whakamātautau e hangai ana ki te kaupapa tauhohenga paturopi takirua tino motuhake me ngā tikanga tātari whakamātautau immunochromatographic koura, ka taea te whakaputa hua i roto i te 15 meneti.