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Cumulative live birth rates according to the number of oocytes retrieved after the first ovarian stimulation for in vitro fertilization/intracytoplasmic sperm injection: a multicenter multinational analysis including 15,000 women
Why 1500 mcg Specifically

The clinical significance arises when B12 is elevated without a clear exogenous explanation

A 300mcg protocol in the clinical setting might translate to 350-400mcg in practical application to ensure adequate exposure
