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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

   Vitamin B 12 deficiency can be found within normal levels, so clinical symptoms should be taken into account when a diagnosis is made. [2] Normal blood levels are considered to be at least above 300 pg/mL in adults. [2] Some researchers have suggested that current standards for vitamin B 12 levels are too low. [151]

4. Vitamin B12 Is a Power Nutrient. Here's How to Know If ... - AOL

   www.aol.com/vitamin-b12-power-nutrient-heres...

   Most meat-eating men consume about 5 micrograms of B12 daily and pee out what they don’t need. ... B12 can cause megaloblastic anemia—a condition characterized by larger than normal red blood ...

5. The Top Signs You Have a Vitamin B12 Deficiency - AOL

   www.aol.com/top-sign-vitamin-b12-deficiency...

   According to the National Institutes of Health, men who drink more than two alcoholic beverages per day, ... A vitamin B12 level of less than 200 pg/mL is considered deficient. Treatment.

6. Vitamin B12 - Wikipedia

   en.wikipedia.org/wiki/Vitamin_B12

   Vitamin B12, vitamin B-12, cobalamin: ... The EAR for vitamin B 12 for women and men ages 14 and up is 2.0 ... even in some cases with normal blood B 12 levels.

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

   www.aol.com/news/recognize-signs-symptoms...

   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 ...

8. Reference ranges for blood tests - Wikipedia

   en.wikipedia.org/wiki/Reference_ranges_for_blood...

   For most substances presented, the optimal levels are the ones normally found in the population as well. More specifically, optimal levels are generally close to a central tendency of the values found in the population. However, usual and optimal levels may differ substantially, most notably among vitamins and blood lipids, so these tables give ...

9. Vitamin B12 deficiency: What is it and who is at risk - AOL

   www.aol.com/news/symptoms-of-vitamin-b-12...

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