女婴，10个月。因面色苍白就医。查体：Hb 110g/L,为了明确该婴儿是否有体内贮铁减少，最重要的实验室检查是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32597' and id < 2591927 and id<>'2591927' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32597' and id > 2591927 and id<>'2591927' order by id asc limit 5