LP203189-8
Vitamin B12 intake
Active
Description
Vitamin B12 is a water-soluble vitamin naturally present in some foods, added to others, and available as a dietary supplement and a prescription medication. Vitamin B12 exists in several forms and contains the mineral cobalt, so compounds with vitamin B12 activity are collectively called "cobalamins". Methylcobalamin and 5-deoxyadenosylcobalamin are the forms of vitamin B12 that are active in human metabolism. Vitamin B12 is required for proper red blood cell formation, neurological function, and DNA synthesis. Vitamin B12, bound to protein in food, is released by the activity of hydrochloric acid and gastric protease in the stomach. Pernicious anemia is an autoimmune disease that affects the gastric mucosa and results in gastric atrophy. This leads to the destruction of parietal cells, achlorhydria, and failure to produce intrinsic factor, resulting in vitamin B12 malabsorption. If pernicious anemia is left untreated, it causes vitamin B12 deficiency, leading to megaloblastic anemia and neurologic disorders. Vitamin B12 is naturally found in animal products, including fish, meat, poultry, eggs, milk, and milk products. Vitamin B12 is generally not present in plant foods, but fortified breakfast cereals are a source of vitamin B12 with high bioavailability for vegetarians. Source: National Institutes of Health Office of Dietary Supplements, NIH Factsheet: Vitamin B12
Basic Part Properties
- Part Display Name
- Vitamin B12 intake
- Part Type
- Component (Describes the core component or analyte measured)
- Created On
- 2015-11-16
- Construct for LOINC Short Name
- Vit B12 intake
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Language Variants Get Info
| Tag | Language | Translation |
|---|---|---|
| zh-CN | Chinese (China) | 维生素 B12 摄入 Synonyms: 维生素 B12（钴胺素、 |
| it-IT | Italian (Italy) | Assunzione di Vitamina B12 |
| nl-NL | Dutch (Netherlands) | vitamine B12-inname Synonyms: cyanocobalamine |
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