Haemosiderin wani sinadari ne da ake samu daga rugujewar haemoglobin, wanda wani sinadari ne da ake samu a cikin jajayen sel masu dauke da iskar oxygen a cikin jiki. Launi ne mai launin rawaya-launin ruwan kasa mai ɗauke da baƙin ƙarfe kuma ana adana shi a cikin ƙwayoyin reticuloendothelial na hanta, saifa, da marrow na ƙashi. Ana samun Haemosiderin sau da yawa a cikin kyallen jikin da suka sami zubar jini ko zubar jini, kuma ana iya amfani da kasancewarsa azaman kayan bincike don wasu yanayin kiwon lafiya.