The majority of PA patients have antibodies against what component necessary for vitamin B₁₂ absorption? A) Parietal cells B) Vitamin B₁₂ C) Intrinsic factor D) Blocking antibody

Question

Quizplus · Accepted Answer

Intrinsic factor is necessary for the absorption of vitamin B₁₂, and the majority of PA patients have antibodies that target and destroy intrinsic factor, leading to vitamin B₁₂ deficiency.

The Majority of PA Patients Have Antibodies Against What Component