Answers
1. Folic acid deficiency
2. B12 deficiency for this section. Diabetes with secondary neuropathy. This list is not exhaustive 🙂
3. Schilling Test.
4. 6 months
5. B12 deficiency. B12 is absorbed in the terminal ileum.
6. Intrinsic factor
7. B12 deficiency
8. Splenectomy (including traumatic and autosplenectomy caused by sickle cell anemia),
Celiac disease, Macrocytic/Megalobastic anemia (Folic acid and B12 deficiency) there are several others, but for the PANCE I would know these.
9. Macrocytic