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A member asked:

Increased urine output? i did have a ct scan of my chest yesterday, i heard that the dye can cause increase urine the day after. is this true?

A doctor has provided 1 answer
Dr. Paul Velt answered

Specializes in Diagnostic Radiology

We'll sort of: the older X-ray dyes or contrast media were hypertonic and did cause a dieresis. Urine output would go up. The newer nonionic media might cause a slight increase. It is still advised to drink water afterward to flush those hardworking kidneys

Answered 5/22/2015

2.8k views

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