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Old 08-01-2011
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Default schilling test and B12 deficiency!

Hi,
To know the etiology of B12 deficiency, schilling's test was used and in this, we had to give oral radiolabelled B12 and Intramuscular B12 and the etiology was determined by measuring the excretion of radiolabelled B12 in the urine.

When the whole thing is done by radiolabelled B12, what is the purpose of Intramuscular B12 during the test then?
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Old 08-02-2011
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giving IM to saturate liver's receptors so we can avoid radio B12 of being absorbed by liver , which then will give us a false reading !!
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