Accepted
at 11:51 p.m. Jan, 23, 2026
by
Ahmed7
Bulk Suggestion
Bulk ID:
hunterlea91/01.12.26-02:22PM
Author:
hunterlea91
Co-authors:
Ahmed7
Rationale for change
NN vid macrocyctic anemia https://www.youtube.com/watch?v=nUKG5TV4NC4&list=PLTF9h-T1TcJggPpvX_JHtzxfLN_yySpAy&index=3
No changes in fields
Text
What is the next step for a patient that presents with anemia, borderline-elevated MCV (97 µm3), and bilateral foot paresthesia?
{{c1::Order serum B12, homocysteine, and methylmalonic acid::3}}
Extra
- Initial workup for B12 deficiency begins with serum B12 testing → methylmalonic acid and homocysteine levels should be ordered for those with borderline/inconclusive results
- Increased homocysteine AND methylmalonic acid is expected in vitamin B12 deficiency (only homocysteine is elevated in B9 deficiency)

Image licensed by Physeo and used with permission. Purchase full access here.
- Increased homocysteine AND methylmalonic acid is expected in vitamin B12 deficiency (only homocysteine is elevated in B9 deficiency)

Image licensed by Physeo and used with permission. Purchase full access here.
Lecture Notes
Empty field
Missed Questions
Empty field
Pathoma
Empty field
Boards and Beyond
Empty field
First Aid
Empty field
Sketchy 2





Watch Macrocytic Anemia DDx





Watch Macrocytic Anemia DDx
Sketchy Extra
Empty field
Picmonic
Empty field
Pixorize
Empty field
Physeo
Empty field
OME
Additional Resources
Empty field
One by one
Empty field



