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In the United States, minor nutrient deficiencies are relatively uncommon
Initial blood work is recommended to confirm whether a patient is genuinely deficient in B12 and needs supplementation, or whether another underlying issue may be affecting energy, weight, or metabolic function
A licensed practitioner then draws a tiny amount of blood to assess baseline levelsthis step takes less than a minute
Push the plunger down slowly and steadily until all the medication is injected
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