Approximately 60 minutes
Eltroxin medication must be stopped for 6 weeks. Eltroxin therapy may recommence 48 hours after Iodine administration with the acknowledgement of your referring clinician.
rhTSH recombinant human TSH is approved by American Thyroid Association and is administered as follows: 0.9mg rhTSH i.m.i on two consecutive days, followed by 131I administration on the third day
Serum TSH and T4 levels 4 weeks after eltroxin has been stopped.
If blood TSH levels are > 50, schedule scan.
If blood TSH levels are > 30, schedule scan.
Low iodine diet prior to study
There is no conflict with Iodine allergy. The administered dose is less than the iodine content of a regular meal.
Patient is encouraged to drink water prior and during study