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Conclusions Our findings support that within a specific range ( 358.7 pg/mL), serum vitamin B12 levels may make a modest contribution to improved clinical pregnancy rates in women undergoing in IVF-ET with the follicular-phase GnRHa protocol
Use only these documented figures
Individuals with risk factors for B12 deficiency including strict vegans, those with gastrointestinal conditions, patients taking long-term metformin or proton pump inhibitors, and older adultsshould discuss screening with their GP, even in the absence of obvious symptoms
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or your symptoms have not improved, have returned, or have changed despite treatment
