[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

开封后的尿检试纸暴露于空气和湿度会快速失效,通常整瓶开封后有效期仅30-90天(远短于瓶标未开封的18-24个月);家庭偶尔使用应选独立铝箔单包装或小规格(25条内),避免选100条大瓶装造成浪费和误判

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