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8 A case-control study that compared 25,956 patients who had vitamin B 12 deficiency with 184,199 control patients found a significantly increased risk of vitamin B 12 deficiency in patients who had taken proton pump inhibitors (odds ratio = 1.65) or histamine H 2 blockers (odds ratio = 1.25) for at least two years
Thats because its potentially unhealthy to take dietary supplements and injections that contain large doses of B vitamins, especially over the long term
Storage Preserve in tight, light-resistant containers, and store at controlled room temperature
The Siemens vitamin B 12 kit reports normal reference values between 142724 pmol/L with a lower limit of detection at 92 pmol/L
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