A member asked:

How long should you wait after having a ct with contrast to have tsh blood work? i heard that the iodine in contrast could affect the tsh result?

A doctor has provided 1 answer

Not TSH: The iodine in contrast media may affect T4 and T3 levels but TSH should not be affected. Have a healthy diet, exercise 30 minutes/day, drink plenty of water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. For nutrition: http://www.choosemyplate.gov/. Get HPV and Covid vaccines. Wish you good health!

Answered 2/12/2021

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