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As a result of this B12 deficiency, they may feel tired and weak or experience heart palpitations, weight loss, and loss of appetite
Home Sweet Boost: Nurses bring it to your door and can tweak it with extras like magnesium or zinc to match what you need
For related laboratory guidance, see how to store lyophilized peptides, learn how to read a peptide COA, or review our third-party testing and COA process
Takeaways A B12 test can tell how much vitamin B12 you have in your body
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