À La Carte Tests
Triiodothyronine (T3), Free
Measures free T3, a thyroid hormone, to help evaluate thyroid function.
What is included?
Free T3
About this test
This blood test measures free triiodothyronine (T3), the portion of T3 that is not attached to proteins in your blood. Results can be reviewed alongside TSH and free T4 to help evaluate thyroid function.
How it works
- Add this test or panel to your cart and complete checkout online.
- Rios Click Labs / Rios Healthcare reviews and processes your order.
- You receive collection instructions before going to Labcorp or coming to Rios Healthcare when available.
- Your results are returned through an approved communication method.
Lab testing does not replace emergency care, diagnosis, treatment, or ongoing medical management. If you have urgent symptoms or a medical emergency, seek prompt medical care.