Q- A 34-year-old woman presents with weakness, easy fatigability and numbness and tingling of her arms and legs. CBC reveals pancytopenia and marked increase in the MCV of erythrocytes. More investigations reveal chronic atrophic gastritis. What is the most likely diagnosis?
A- Aplastic anemia
B- Folic acid deficiency anemia
C- Iron deficiency anemia
D- Vitamin B12 deficiency
Q- Which one of the following conditions is NOT a common cause of vitamin B12 deficiency?
A- Diet deficiency of vitamin B12
B- Gastric bypass
C- Intrinsic factor deficiency
D- Malabsorption syndrome
Q- Which of the following substances is elevated due to vitamin B12 deficiency?
B- Folic acid