A 35-year-old vegan woman presents with fatigue and paraesthesia in her feet. Examination reveals decreased vibration sense and a smooth, pale tongue....

Question

A 35-year-old vegan woman presents with fatigue and paraesthesia in her feet. Examination reveals decreased vibration sense and a smooth, pale tongue. FBC shows macrocytic anaemia. Which investigation is most likely to confirm the underlying diagnosis?

Accepted Answer

Serum vitamin B12 level

Answer

Serum ferritin

Answer

Serum folate level

Answer

Bone marrow biopsy

Answer

Haptoglobin level

au-amc MCQ (SBA): Vitamin B12 deficiency

A 35-year-old vegan woman presents with fatigue and paraesthesia in her feet. Examination reveals decreased vibration sense and a smooth, pale tongue. FBC shows macrocytic anaemia. Which investigation is most likely to confirm the underlying diagnosis?