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What is the 25-hydroxyvitaminD, serum and what is the vitamin B12, serum?and what its normal value of both vitamins in human body?
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Normal vitamin B12 level is 200-900 picogram/ml. Less than 200pg/ml is considered deficient 25 hydroxy vitamin D -. Normal level is 20-50 ng/ml. Level less than 20 ng/ml indicates deficiency.
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