Schilling Test

Alternate Names

  • Vitamin B12 Absorption Test

Intrinsic factor is released in the stomach, and is necessary for the normal absorption of vitamin B12. Deficiency of vitamin B12 results in pernicious anemia, which can be caused either by poor absorption in the intestines, or low levels of intrinsic factor. The Schilling test measures the amount of vitamin B12 in the urine, and the results allow your doctor to determine the exact cause of the deficiency. There are a number of methods that may be used for the Schilling Test.

A Schilling Test should not be done on pregnant women.


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