Therapeutic doses of vitamin B12 give false-positive values for intrinsic-factor-blocking antibodies.
D000906:Antibodies / Q000032:analysis*; D005189:False Positive Reactions; D006801:Humans; D007437:Intrinsic Factor / Q000276:immunology*; D011863:Radioimmunoassay; D011933:Reagent Kits, Diagnostic; D014805:Vitamin B 12 / Q000097:blood*
D000906:Antibodies; D011933:Reagent Kits, Diagnostic; D007437:Intrinsic Factor; D014805:Vitamin B 12