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Deficiency can cause fatigue, nerve issues, and memory problems
At CoLaz we do not run diagnostic blood tests, so if you have not had your B12 confirmed, that is the first step
Slight relief
However, if supplementing for confirmed deficiency, follow-up blood tests may be arranged by your GP to ensure adequacy of treatment
[15] [18] For borderline results, additional tests such as methylmalonic acid, homocysteine, or holotranscobalamin may be considered
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