6 hours and then again 24 hours later. They set the base with the first and then the real test is 24 hours later, after you swallow the radioactive iodine.
@HannahSky They use a similar test for pancreas and gallbladder. It is called nuclear something another testing. Unfortunately I have had them all. Your thyroid can really mess you up if it is off even a tiny bit.
· Reply · Translate · Jan 29, 2020