He heterodimer a Cal, he mea tito mai i te MRP 8 me te MRP 14. Kei roto i te neutrophils cytoplasm me te whakaatu ki nga kiriuhi pūtau mononuclear.Ko te Cal he pūmua o te wahanga whakapeka, he pai te wa e noho pumau ana mo te kotahi wiki i roto i nga tai tangata, kua whakatauhia he tohu mo te mate whekau.Ko te kete he whakamatautau whakakitenga ahua ngawari e kitea ana te cal i roto i nga tai tangata, he teitei te maaramatanga me te tino kaha.Ko te whakamatautau i runga i te maataapono tauhohenga o te hanawiti paturopi rua me nga hangarau tātaritanga immunochromatographic koura, ka puta he hua i roto i te 15 meneti.