If you were taking B12 when you had the test, it would show
an elevation.
It is best to stop B12 1 week before the test.
The Schilling test I believe was discontinued, several years ago in most labs in US.
Today they do antibody tests for damage to parietal cells of the stomach.
To see if your cyano is "working" and not just floating around in the blood, a MMA test and/or homocysteine would be useful.
B12 lowers MMA, and if MMA is elevated, that indicates that the B12 is not working.
The iron would show up on some tests in the CBC perhaps.
It is always best to stop taking supplements before blood work is done.
One value that becomes elevated in the CBC and is a warning marker of low B12 is the MCV...mean corpuscular volume. This measures if the red cells are too big, which happens when they are poorly formed due to low B12 levels. Sometimes the MCV
is elevated before other tests show positive.
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Weezie looking at petunias 8.25.2017
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