AKT-2918

AKT-2918

A frail 70-year-old woman has had some routine bloods checked after she complained of feeling tired all the time. The only finding of possible concern is a serum vitamin B12 level of 180 pmol/l (Normal range: 160-900 pmol/l). Her haemoglobin level is 131 g/l (Normal range: 115-155 g/l). She has no neurological symptoms and the clinical examination is normal.
What is the most appropriate next step in management?