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What an elevated serum B12 represents, and why no single threshold exists A serum B12 reflects vitamin bound to transport proteins in the blood, not the amount that has reached the tissues, and the threshold for calling it high shifts with the assay, the laboratory, reference interval, and the unit on the report
You may feel a quick pinch, but its over in seconds
For most patients, B12 injections do not cause any significant long-term health concerns
We may recommend a B12 shot based on your needs
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