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A member asked:
How long after having omnipaque 100ml injection for ct should i look for unwanted side effects. it has been 3 hours?
A doctor has provided 1 answer
The vast majority: of allergic and idiosyncratic reactions occur immediately or within minutes following injection. Rarely, delayed reactions can occur. By 24 hours most of the contrast is eliminated from your system via the kidneys/urine. At 3 hours, you are highly unlikely to have a reaction.
Answered 1/5/2019
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