The Schilling test detects an inability to absorb an oral dose of vitamin _____.

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The Schilling test detects an inability to absorb an oral dose of vitamin B₁₂. It may be used in the diagnosis of pernicious anemia. Diagnostic features of pernicious anemia include low serum vitamin B₁₂ levels and gastric achlorhydria. The treatment of pernicious anemia consists of injections of vitamin B₁₂. The oral mucosa improves in time, but the papillae on the dorsum of the tongue may not completely regenerate. The Schilling test detects an inability to absorb an oral dose of vitamin B₁₂ rather than vitamin B₆. The Schilling test detects an inability to absorb an oral dose of vitamin B₁₂ rather than vitamin C. The Schilling test detects an inability to absorb an oral dose of vitamin B₁₂ rather than vitamin E.

The Schilling Test Detects an Inability to Absorb an Oral