Unverified85% confidenceSolutionTime unknown
备孕补充叶酸的标准路径:普通人群→孕前3个月起每日0.4-0.8mg普通叶酸→持续至孕12周(或整个孕期用复合制剂);有高危史→就医评估→按需4mg处方剂量;反复流产/已知MTHFR变异→选活性甲基叶酸
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85%
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Long-term
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