“How long does CT contrast stay in your system?”
I am a 25 year old male. I want to know how long CT contrast stays in your system?
5 Answers
RadiologistRadiologist
24 hours
Intravenous contrast clears in less than a day and much quicker if one drinks excessive fluids after the exam. Oral contrast usually by bowel activity, but fluids help.
That is directly related to your kidney function. It is variable for everybody.
Thank you and all the best!
Thank you and all the best!
Contrast has a 2-hour half life. This means that at 2 hours, 50% has been eliminated. At 4 hours, 75% has been eliminated. At 6 hours, 87.5% has been eliminated. At 8 hours, 93.75% has been eliminated. At 10 hours, nearly 97% has been eliminated. At 24 hours, there is virtually no remaining contrast.
8 hours
