上消化道出血患者每日出血量至少超过（ ）时，可出现大便隐血试验阳性。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30901' and id < 2485921 and id<>'2485921' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30901' and id > 2485921 and id<>'2485921' order by id asc limit 5