A patient's laboratory test results indicate decreased levels of vitamin B₁₂ in the blood.The nurse knows that this finding is consistent with which of the following conditions? Select all that apply. A)Chronic renal failure B)Crohn's disease C)Dietary deficiency D)Pernicious anemia E)Diabetes

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Vitamin B12 deficiency can be caused by Crohn's disease due to malabsorption, dietary deficiency due to inadequate intake, and pernicious anemia due to lack of intrinsic factor needed for absorption.

A Patient's Laboratory Test Results Indicate Decreased Levels of Vitamin