Should I avoid CT scans with contrast?
Not necessarily — but your kidney function should be checked first, and hydration is often advised.
Diagnostics
Contrast dye and kidney risk
What contrast dye used in scans can do to the kidneys, and who is at risk.
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Short Answer
Contrast dye used in some CT scans and angiograms can stress the kidneys, especially in people with existing kidney disease, diabetes or dehydration.
Medical Facts
- Contrast can temporarily reduce kidney function in at-risk people.
- Hydration before and after helps protect the kidneys.
Treatment or Donation Options
- Tell the radiology team about any kidney condition.
- Ensure your kidney function is checked before contrast scans.
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