Discontinuation of metformin to prevent metformin-induced high colonic FDG uptake: is 48  h sufficient?

ConclusionsDiscontinuing metformin for 48  h before undergoing an FDG PET/CT still gives a high uptake in the distal parts of the colon when compared with non-diabetic patients who are not using metformin. Discontinuing metformin for 48 h seems to be useful for scanning the more proximal segments of the colon.
Source: Annals of Nuclear Medicine - Category: Nuclear Medicine Source Type: research