What do the results mean?
If your results show high total T3 levels or high free T3 levels, it may mean you have hyperthyroidism. Low T3 levels may mean you have hypothyroidism, a condition in which your body doesn't make enough thyroid hormone.
T3 test results are often compared with T4 and TSH test results to help diagnose thyroid disease.
If you have questions about your results, talk to your health care provider.Learn more about laboratory tests, reference ranges, and understanding results.
