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[2] For this reason, elevated serum homocysteine over 15 micromol/L and methylmalonic acid (MMA) over 0.271 micromol/L are considered better indicators of B 12 deficiency, rather than relying only on the concentration of B 12 in blood
Training performance often improves because you're recovering faster and your body is efficiently fueling workouts
In general, organ meats, like kidneys or livers from animals, are very high in B12
For most patients with vitamin B12 deficiency, high-dose oral supplements are as effective as intramuscular injections at raising serum B12 levels and resolving symptoms
Which method is best for you depends on your need, comfort and who is administering the injection
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