A full thyroid panel - includes reverse T3. I use Regenerus Labs for this test. You will need to find a local phlebotomist as this is a blood draw test. Markers include TSH, T4, T3, fT4, fT3, TPO Ab, TG Ab, T-uptake, and rT3. Please note that this is the test only, you will need to book a "Nutrition with test interpretation" consultation once the results are in.