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Unexplained changes: If urine color changes cannot be attributed to diet, hydration, or medication, or if unusual colors persist, its important to seek medical advice

The top is self-sealing and the product can be used for up to a year after first use

However, supplements only To assess for a vitamin B12 deficiency, a doctor will likely: ask about symptoms carry out a physical examination do a blood test to measure B12 levels and check for anemia do other tests to rule out other conditions and check for pernicious anemia, if necessary Some people will have a B12 deficiency but no symptoms

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A vial reconstituted in BAC water and stored at 28C is stable for up to 28 days sufficient for most research protocols without needing to reconstitute fresh vials