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Vitamin B12 deficiency causes symptoms like fatigue, poor memory, a swollen tongue, and canker sores.
Other symptoms of vitamin B12 deficiency include memory loss, ... (A blood test is the only way to know.) PeopleImages. If that’s you, find a supplement with a USP, Informed- Choice, or NSF ...
If your health care provider suspects you have a vitamin deficiency, they will do routine blood testing to check for the amount of the vitamin in your blood. A vitamin B12 level of less than 200 ...
Vitamin B 12 deficiency can be determined, but not always. [14] This means it measures forms of vitamin B 12 that are "active" and can be used by the body, as well as the "inactive" forms, which cannot. [150] Vitamin B 12 deficiency can be found within normal levels, so clinical symptoms should be taken into account when a diagnosis is made. [2]
The Schilling test has multiple stages. [3] As noted below, it can be done at any time after vitamin B 12 supplementation and body store replacement, and some clinicians recommend that in severe deficiency cases, at least several weeks of vitamin repletion be done before the test (more than one B 12 shot, and also oral folic acid), in order to ensure that impaired absorption of B 12 (with or ...
Vitamin B 12 deficiency has been observed in between 40% and 80% of the vegetarian population who do not also take a vitamin B 12 supplement or consume vitamin-fortified food. [36] In Hong Kong and India, vitamin B 12 deficiency has been found in roughly 80% of the vegan population.