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2. Serum vitamin B12 - Wikipedia

   en.wikipedia.org/wiki/Serum_vitamin_B12

   Serum vitamin B 12 is a medical laboratory test that measure vitamin B 12 only in the blood binding to both transcobalamins. [1] Most of the time, 80–94% of vitamin B 12 in the blood binds to haptocorrin, while only 6–20% is binds to transcobalamin ll. [2] Only transcobalamin ll is "active" and can be used by the body. [1]

3. Vitamin B12 deficiency - Wikipedia

   en.wikipedia.org/wiki/Vitamin_B12_deficiency

   Blood tests may show low levels of vitamin B 12, elevated levels of methylmalonic acid or homocysteine, and a routine complete blood counts may shows anemia with an elevated mean cell volume. [140] The presence of antibodies to gastric parietal cells and intrinsic factor may indicate pernicious anemia .

4. How to recognize the signs and symptoms of vitamin B12 ... - AOL

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   Vitamin B12 deficiency causes symptoms like fatigue, poor memory, a swollen tongue, and canker sores. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to ...

5. Vitamin B12 - Wikipedia

   en.wikipedia.org/wiki/Vitamin_B12

   If nervous system damage is present and blood testing is inconclusive, a lumbar puncture may be carried out to measure cerebrospinal fluid B 12 levels. [54] Serum haptocorrin binds 80-90% of circulating B 12, rendering it unavailable for cellular delivery by transcobalamin II. This is conjectured to be a circulating storage function. [55]

6. Vitamin B12 deficiency symptoms - AOL

   www.aol.com/finance/vitamin-deficiency-cause...

   Vitamin B12 deficiency symptoms . Vitamin B12 deficiency has a few hallmark symptoms, according to doctors: Lack of energy. Mental fatigue. Nausea, vomiting, or diarrhea. Lack of appetite. Weight loss

7. Is It Possible to Take Too Much B12? Here's What ... - AOL

   www.aol.com/lifestyle/possible-too-much-b12...

   Registered dietitians explain what vitamin B12 is, how much you need, and the potential side effects of taking too much. Skip to main content. 24/7 Help. For premium support please call: ...