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Also known as cobalamin, B12 is a powerhouse that helps keep your brain and nervous system healthy, produces red blood cells, and even plays a part in creating DNA

Typically, 'less than 50' might be a response, depending on the method used and the laboratory

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Because water-soluble vitamins like vitamin B12 are regulated by the kidneys, any excess that your body doesnt need will be excreted in your urine

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