| | Question about T uptake level
My girlfriend has been having the symptoms of a thyroid disorder, so I talke her into getting the blood tests run. She had a TSH, t4, free t4 and T uptake test run ( not t3 uptake, or t4 uptake, it was just labled as T uptake). All the tests came back normal and they were about in the middle of the normal range, except for the T uptake, which came back at 30, with the low level of the normal range being 31, i forget what the high normal level number was. What does the T uptake mean? and would it being low cause her to have symptoms of a thyroid disorder while still having normal TSH and T4 levels?