1 doctor weighed in:

What is t3u mean? And what is high t3u mean?

1 doctor weighed in

In brief: It means

Resin uptake of tri-iodo thyronine.
It means you are possibly hyperthyroid, but it depends on the rest of your thyroid function tests, such as total and free t4. Confused? This is a complicated set of tests to interpret, so ask your endocrinologist.

In brief: It means

Resin uptake of tri-iodo thyronine.
It means you are possibly hyperthyroid, but it depends on the rest of your thyroid function tests, such as total and free t4. Confused? This is a complicated set of tests to interpret, so ask your endocrinologist.
Dr. Robert Uyeda
Dr. Robert Uyeda
Thank
Get help from a real doctor now
Dr. Jonathan Jassey
Board Certified,
13 years in practice
1M people helped
Continue
108,000 doctors available
Read more answers from doctors