Unverified85% confidenceDecision RuleTime unknown
血清25-OH-D在30-50ng/mL为理想区间；已知缺乏（<20ng/mL）时1000-2000IU/日为常规补充剂量，日常维持400-1000IU即可，无需盲目上5000IU
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Unverified血清25-OH-D＜20ng/mL（缺乏）时可选2000-5000IU/日进行纠正，达标后（30-50ng/mL）以1000-2000IU/日维持；单纯预防性补充400-1000IU/日即可96% similarUnverified普通成人日常维持推荐1000-2000IU/天，此剂量可满足绝大多数人将血清25-OH-D维持在30ng/mL以上；仅在明确缺乏（血清＜20ng/mL）时才短期使用5000IU纠正94% similarUnverified血清25-OH-D＜20ng/mL（缺乏）建议短期补充2000-5000IU/天纠正，达标后维持1000-2000IU/天；20-30ng/mL（不足）用1000-2000IU/天即可；已达30-50ng/mL理想区间用400-1000IU/天维持93% similarUnverified血清25-OH-D＜20ng/ml（缺乏）建议2000-5000IU/天短期纠正后复查，20-30ng/ml（不足）用1000-2000IU/天维持，≥30ng/ml充足者400-800IU/天日常预防即可91% 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91% similar
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