US$ 23.59
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Description
Diagnosis of Vitamin B12 Deficiency The diagnosis of vitamin B 12 deficiency has traditionally been based on low serum vitamin B 12 levels, usually less than 200 pg per mL (150 pmol per L), along with clinical evidence of disease

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Ive used the ghk-cu serum for the last 3 weeks, as directed
Metformin: Commonly prescribed for diabetes, metformin can affect the absorption of B12 in the gut over time

Thanks again, Mike Abbott
