Have you had recent blood work to check kidney function? If not please do so. If your Kidney function is fine you shouldn't have a problem.
The dye (contrast) used is flushed out through the Kidneys. I recommend drinking water before your appointment (not too much for obvious reasons
). After your MRI drink plenty of water and the Gadolinium will be out of your system the first or second time you pee.
The only problem I have had is if I don't drink a lot of water afterwards the Gadolinium irritates my bladder.
Best wishes on your up coming MRI.
Diagnosed with Multiple Sclerosis in 1985