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To assess vitamin B12 levels to assist in diagnosing disorders such as pernicious anemia and malabsorption syndromes.
Serum collected in a gold-, red-, or red/gray-top tube.
(Method: Immunochemiluminescent assay)
|Age||Conventional Units||SI Units (Conventional Units × 0.738)|
|Newborn–10 yr||160–1,300 pg/mL||118–959 pmol/L|
|11–17 yr||260–900 pg/mL||192–664 pmol/L|
|Adult||200–1,100 pg/mL||148–812 pmol/L|
|Values tend to decrease in older adults.|
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Bladh, Mickey Lynn., and Anne M. Van Leeuwen. "Vitamin B12." Davis's Lab & Diagnostic Tests, 7th ed., F.A. Davis Company, 2017. Nursing Central, nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425210/all/Vitamin_B12.
Bladh ML, Van Leeuwen AM. Vitamin B12. Davis's Lab & Diagnostic Tests. 7th ed. F.A. Davis Company; 2017. https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425210/all/Vitamin_B12. Accessed April 22, 2019.
Bladh, M. L., & Van Leeuwen, A. M. (2017). Vitamin B12. In Davis's Lab & Diagnostic Tests. Available from https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425210/all/Vitamin_B12
Bladh ML, Van Leeuwen AM. Vitamin B12 [Internet]. In: Davis's Lab & Diagnostic Tests. F.A. Davis Company; 2017. [cited 2019 April 22]. Available from: https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425210/all/Vitamin_B12.
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T1 - Vitamin B12
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A1 - Bladh,Mickey Lynn,
AU - Van Leeuwen,Anne M,
BT - Davis's Laboratory & Diagnostic Tests
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DB - Nursing Central
DP - Unbound Medicine