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Doctor insights on: What If Im Allergic To Ct Dye

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I'm allergic to ct scan dye . What meds should I avoid ?

I'm allergic to ct scan dye . What meds should I avoid ?

None: The reaction is from the structure of the dye and not the iodine content. Low-molecular dye has a much lower frequency of allergic reaction even though it contains about the same amount of iodine. ...Read more

Dr. Gregory Moneta
1 doctor shared a insight

Computed Tomography (Definition)

Ct uses xrays taken an 360 degrees combined with a computer to see"inside" the body. The table moves as the xray tube and detectors spin around the patient 10 times a second or more! the image shows excellent soft tissue detail, enhanced with injection of intravenous contrast or oral contrast. This way the body is shown in slices, in any plane, usually axially, but ...Read more


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What happens if you get an allergic reaction to the contrast dye for CT scan?

What happens if you get an allergic reaction to the contrast dye for CT scan?

See below: With iodinated based contrast you may get allergic reaction ranging from mild skin rash to severe rash, difficult breathing, severe drop in blood pressure and even cardiac arrest. Patients at risk are those with previous reaction, history of asthma or allergy. Please consult with your doctor. ...Read more

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I'm allergic to the contrast dye, but could a CT scan still detect bladder cancer?

I'm allergic to the contrast dye, but could a CT scan still detect bladder cancer?

Maybe: Although ct scans are an excellent radiographic study, they can easily miss small bladder masses. If one should have a very large bladder mass, it will likely be seen. However, a cystoscopy is still required because the mass seen on ct scan does not neccessarily mean cancer. A tissue diagnosis with a biopsy is still required to make the definitive diagnosis. ...Read more

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Ct angiography offered. Terrified of dieing from allergic reaction to the dye. 22 male.

Allergy: If you have not previously reacted to dye the chances of your doing so are not great, and since you are in a facility trained to deal with such reactions dying from dye is very unlikely. You might want to discuss this with the radiologist in charge. If still concerned see a psychiatrist or clinical psychologist and address your fears. Good luck. ...Read more

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If I've had contrast CTPA scan before with no allergic reaction- what's the chances of me having a reaction with another CT scan with dye?

If I've had contrast CTPA scan before with no allergic reaction- what's the chances of me having a reaction with another CT scan with dye?

Low: Considering your body has been exposed to the contrast with no reaction, it is unlikely the same or similar contrast will bring any reaction. Nonetheless speak with your doctor about your concerns so they can prepare and answer your questions thoroughly. Good luck. ...Read more

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I want a cardiac CT scan but am scared of allergic reaction to the dye, I have mild asthma. Can i request Benadryl (diphenhydramine) or how can I get round this?

I want a cardiac CT scan but am scared of allergic reaction to the dye, I have mild asthma. Can i request Benadryl (diphenhydramine) or how can I get round this?

See answer: Talk to your dr. / radiologist about the appropriate pre- procedure allergic preparation. It usually involves pre-procedure oral steroids (if you are an asthmatic already on steroids this may be modified), possibly an oral antihistamine, and may be performed in a hospital center depending on the severity of your prior iodine sensitivity. ...Read more

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Allergic reaction to the contrast dye for cat scan?

Allergic reaction to the contrast dye for cat scan?

See below: Allergic reaction to ct scan contrast may range from mild skin rash and itching to severe skin rash and cardiac arrest. Patients at risk are those with previous adverse reactions to iodine-based contrast materials, history of asthma, history of allergy. Contrast reaction may be reduced or prevented if appropriately treated before the scan, but this is not 100%. ...Read more

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What are the chances of having a severe allergic reaction to the cat scan dye they use? 

What are the chances of having a severe allergic reaction to the cat scan dye they use? 

Low: Severe reactions to ct scan dyes are low unless you have a history of a reaction, are on certain medications that work through your kidneys or you are very dehydrated. It is always good to questions why you need the ct scan in the first place as it also exposes you to more radiation. Will the results of the scan change how you are treated?.. And that can outweigh the small risks of the procedure. ...Read more

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I'm concerned because I have to have a CT scan how safe is the contrast dye?

Very safe: Assuming you are not allergic to the dye and do not have kidney problems, the dye is safe. People with dye allergies often are allergic to shellfish, or have a history of asthma. They will question you before they give you the injection. ...Read more

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Why is CT dye still in my system after a month of having my CT ?

Prob oral contrast: Sometimes the oral contrast, if it is barium based, can get "stuck" in colonic or other diverticula and may take years to be cleared out, if ever. The IV contrast is cleared by your kidneys in a matter of a few hours. ...Read more

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How long does dye stay in your body after a CT scan?

How long does dye stay in your body after a CT scan?

Depends.: Iv contrast clears in 8-10 hours if kidneys are working normally. If your kidneys are not working normally, the dye can stay in your body for several days. Oral contrast can stay in your bowel for several days. ...Read more

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How long does the the dye stay in your body for a ct-scan?

How long does the the dye stay in your body for a ct-scan?

Depends.: Iv contrast clears in 8-10 hours if kidneys are working normally. If your kidneys are not working normally, the dye can stay in your body for several days. Oral contrast can stay in your bowel for several days. ...Read more

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How long does it take for CT scan dye to leave your system?

How long does it take for CT scan dye to leave your system?

a few hours: The I.V. Contrast is filtered unchanged by the kidneys with most of the administered dose appearing in the urine within a few hours. ...Read more

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What to do if I have to have a CT scan how safe is the contrast dye?

CT IV contrast : IV contrast is associated with a very low incidence of acute adverse events, and the bulk of these are not life threatening. Studies report an overall acute adverse reaction rate (allergic-like + physiologic) of 0.2%-0.7%. Serious acute reactions to IV dye are rare, with an historical rate of approximately 0.04%. FDA review demonstrated a rate of 2.1 fatalities per 1 million injections. ...Read more

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How long does it take CT scan IV dye and oral to get out of your system?

How long does it take CT scan IV dye and oral to get out of your system?

Depends: Given normal renal function, most of the IV contrast will have been excreted in the urine in a few hours. The oral contrast will be eliminated in the stools over the next few days depending on your regularity status. ...Read more

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How long does it take for contrast dye from a CT scan to leave your body?

24 hours: In a patient with normal renal function, contrast should be out of your system within 24 hours. ...Read more

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Can dye in the blood to do a CT harm you?

Uncommon: The contrast or "dye" that is injected into the vein for a ct scan is very safe. A small percentage of patients may have an allergy to the iodine in the contrast. Another small subset of patients with poorly functioning kidneys should not receive this type of contrast as it may further damage the kidneys. If people are adequately screened before receiving the contrast, it is usually harmless. ...Read more

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Can doctors tell me what does the CT scan contrast dye taste like?

Various Flavors: The oral ct contrast is a dilute barium suspension which can have different flavors depending on the manufacturer. There could be banana, orange, etc. ...Read more