Unverified90% confidenceDecision RuleTime unknown
健康成年人日常维持选择D3 1000-2000IU/天即可满足需求；血清25-OH-D已明确缺乏（<20ng/mL）时可短期用5000IU/天纠正，纠正后降回维持量
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Unverified维持性补充（血清25-OH-D已达30ng/mL以上）成人日常选择1000-2000IU即可；血清＜20ng/mL的明确缺乏者短期可用5000IU纠正，达标后降回维持量95% similarUnverified普通成人日常维持选择1000-2000IU/天即可；血清25-OH-D严重缺乏（<20ng/ml）时才需5000IU/天短期强化，且应在补充2-3个月后复查血清水平再调整剂量93% similarUnverified维持性补充选1000-2000IU/日即可满足多数成年人需求；血清25-OH-D<20ng/ml的明确缺乏者可短期用5000IU/日纠正，纠正后降至维持量，不建议长期无监测服用5000IU93% similarUnverified血清25-OH-D＜20ng/mL（缺乏）时，成人日常补充建议2000-5000IU/天以快速纠正；20-30ng/mL（不足）用1000-2000IU/天维持；≥30ng/mL达标后可降至400-1000IU/天93% similarUnverified无缺乏的健康成人日常维持推荐1000-2000IU/天；血清25-OH-D＜20ng/ml（缺乏）需在医生指导下短期用5000IU/天纠正，纠正后回落到维持量，不宜长期高剂量93% similar
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