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2023年5月29日 · Understanding the Results. The normal range for vitamin B12 can vary slightly depending on the lab. But a normal level of vitamin B12 in your bloodstream is generally between 190 and 950 picograms...
2023年5月29日 · Understanding the Results. The normal range for vitamin B12 can vary slightly depending on the lab. But a normal level of vitamin B12 in your bloodstream is generally between 190 and 950 picograms...
