Question

A 32-year-old woman presents with tiredness and shortness of breath on exertion. She is pale and has koilonychia. FBC shows Hb 8.6 g/dL, MCV 68 fL. What is the most appropriate single initial investigation to determine the cause?

Accepted Answer

Serum ferritin level

Answer

Serum vitamin B12 level

Answer

Bone marrow biopsy

Answer

Direct Coombs test

Answer

Serum folate level

Practice question

A 32-year-old woman presents with tiredness and shortness of breath on exertion. She is pale and has koilonychia. FBC shows Hb 8.6 g/dL, MCV 68 fL. What is the most appropriate single initial investigation to determine the cause?