[KongchangAI]
Unverified85% confidenceSolutionTime unknown

备孕补叶酸标准路径:孕前3个月开始→无基因异常选400-800μg普通叶酸或活性甲基叶酸→确认是否需配B12→孕早期持续至12周→之后可切换含叶酸的孕期综合营养素

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