[KongchangAI]
Unverified82% confidenceSolutionTime unknown

备孕期选购叶酸的标准路径:孕前3个月开始补充→普通人群选400μg普通叶酸→有流产史/同型半胱氨酸高/疑似基因问题者做MTHFR检测→变异者改用活性甲基叶酸→高危病史者遵医嘱用处方级高剂量

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82%
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Long-term
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