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Sports-specific modifications follow similar principles
A high result alone does not diagnose any disease
Foods with insufficient vitamin B12 Some people believe that certain plant-based foods are good sources of vitamin B12
Measurement of serum methylmalonic acid should be used to confirm deficiency in asymptomatic high-risk patients with low-normal levels of vitamin B 12
Also, while we were writing this guide, this kit became unavailable on Amazon, and the direct-purchase link (above) is hard to navigate
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