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SPECT DatScan: With Or Without Lugol (allergic To Iode)? ——————————————————————————

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Posted on Sat, 20 Feb 2021
Question: SPECT DatScan: with or without Lugol (allergic to iode)?
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I decided to take a SPECT DatScan, by mid of March, just to confirm that I have a Parkinsonism (PSP) and evaluating how advanced it is (as far as I understand, DatScan does not differentiate if it is PD, PSP, CBD, or other Parkinsonism).
Anyway, what concerns me now about this scan is that one should take a solution of Lugol, that contains iode (to protect the thyroid from radiation, I believe):
5 drops of solution Lugol 5%, 3 times per day, 2 days before the scan, during the day of the scan, and 2 days after the scan.
Fifty years ago when preparing for an urologic examination I took an INJECTION of iode contrast - I fainted and felt as passing out, but it was a fleeting reaction.
Since I fear I’m allergic to iode, I’m about to proceed to the DaTScan without taking the solution of Lugol.
I should like to know about the risks of taking Lugol, in case of being allergic to iode? What shall I choose: running the risk of some reaction to Lugol, or running the risk of damaging my thyroid by not taking Lugol?
Thank you so much.
doctor
Answered by Dr. Dr.Dorina Gurabardhi (3 hours later)
Brief Answer:
If you are allergic to Lugol, you should avoid doing a datScan with Lugol

Detailed Answer:
Hello dear and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice.

I understand your concern.
If you are allergic to Lugol, I recommended to avoid the use of Lugol.
The allergic reactions can be very dangerous and difficult to manage.
So,I suggest to do the datScan without Lugol.

Hope I have answered your query. Let me know if I can assist you further.

Kind regards!

Dr.Dorina Gurabardhi
General &Family Physician

Above answer was peer-reviewed by : Dr. Nagamani Ng
doctor
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Follow up: Dr. Dr.Dorina Gurabardhi (31 minutes later)
Dr. Dorina Gurabardhi,
Many thanks for your support. Since I fear to be allergic to iode, it will be better not run the risk of taking the Lugol ("better safe than sorry").
Regards
doctor
Answered by Dr. Dr.Dorina Gurabardhi (1 minute later)
Brief Answer:
I am glad that I have been helpful.

Detailed Answer:
Hi again dear,

I am glad that I have been helpful.

Take care!
Kind regards,
Dr.Dorina Gurabardhi
Above answer was peer-reviewed by : Dr. Prasad
doctor
Answered by
Dr.
Dr. Dr.Dorina Gurabardhi

General & Family Physician

Practicing since :2013

Answered : 13560 Questions

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SPECT DatScan: With Or Without Lugol (allergic To Iode)? ——————————————————————————

Brief Answer: If you are allergic to Lugol, you should avoid doing a datScan with Lugol Detailed Answer: Hello dear and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. I understand your concern. If you are allergic to Lugol, I recommended to avoid the use of Lugol. The allergic reactions can be very dangerous and difficult to manage. So,I suggest to do the datScan without Lugol. Hope I have answered your query. Let me know if I can assist you further. Kind regards! Dr.Dorina Gurabardhi General &Family Physician