How long do I need to go without B12 injections to get an accurate reading of my B12 levels?
Accurate reading of B12 levels? - Pernicious Anaemi...
Accurate reading of B12 levels?
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Themaid
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At least three months.
Gambit62Administrator
at least 3 months - some of the studies on how long it took serum B12 levels to drop after injections showed some patients taking 4 years for levels to fall. Levels in some patients fall much quicker.
Best practice is to not retest serum B12 levels once treatment has started unless there is a reason to think that treatment has not been followed (not really relevant if you have regular injections. Its easier to go by symptoms in determining the frequency of treatment than it is to use serum B12.
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