“How long does the dye stay in your system?”

CT DYE is usually eliminated from your body within 24 to 48 hours through your kidneys. However, this can vary based on factors like:

Kidney function – If your kidneys are healthy, you’ll clear the dye faster. If you have kidney issues, it may take longer.
Hydration – Drinking plenty of water helps flush the dye out faster.
Age & overall health – Younger and healthier individuals usually eliminate it more quickly.

The dye used in a CT scan, typically injected intravenously, is usually completely eliminated from your system within 24 hours through your urine, meaning you should be able to flush it out within a day by drinking plenty of fluids after your scan.