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For patients whose levels fall in the borderline or gray zone, a methylmalonic acid (MMA) test provides greater specificity MMA levels rise when B12 is functionally inadequate at the cellular level, even if serum B12 appears borderline normal
A deficit in this vital vitamin is frequently visible as soon as it occurs
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The instructions were clear and easy to follow, which gave me confidence in using the product safely
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This is why its nicknamed the red vitamin
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