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More specialised tests such as active B12 (holotranscobalamin) or methylmalonic acid may be available through specialist referral, though availability varies across the UK
Sikiric et al., 1997b
Weighing the Pros and Cons Let's summarize the potential benefits and drawbacks: Potential Benefits (Limited Evidence, Often Concurrently with Lifestyle Changes): Possible slight energy increase: Some individuals report increased energy levels, potentially improving exercise adherence
Also discard if the solution appears cloudy, contains particles, has been left at room temperature for more than 48 hours, or is past the 28-day mark
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