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HBV DNA 第5代WHO標(biāo)準(zhǔn)品已以國(guó)際單位（IU）進(jìn)行校準(zhǔn)，并與第四個(gè)世界衛(wèi)生組織HBV DNA NAT國(guó)際標(biāo)準(zhǔn)平行[2]。

19/118 WHO International Standard Ferritin (Human, Recombinant) 鐵蛋白國(guó)際參考物質(zhì) Preparation 19/118, the 4th International Standard for ferritin, is for use in immunoassays for human serum ferritin.