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T4 TOTAL AND THYROXINE TOTAL

Medically Reviewed By: Quentin Caswell, FNP-C
Last Updated: July 7, 2023

This test measures the total amount of circulating thyroxine in your blood. Thyroxine, a hormone produced by the thyroid, is also known as T4. A high value can indicate hyperthyroidism, a low value can indicate hypothyroidism. Total T4 levels can be elevated due to pregnancy, and other high estrogen states, including use of estrogen replacement or birth control pills.

FAQS

AM I REQUIRED TO FAST?
No
IS A DOCTOR’S ORDER REQUIRED?
No. You do not need to provide a doctor’s order to get lab testing done at Advanced Practice Clinic.
DO I NEED TO MAKE AN APPOINTMENT?
No. You can walk in for same-day testing. We make it easy for you by offering work-friendly hours.
IF I HAVE QUESTIONS ABOUT MY TESTS RESULTS WHO SHOULD I CONTACT?
We recommend you share your results with your healthcare provider.

"This content is for educational purposes and does not substitute personalized medical advice."

Quentin Caswell, FNP-C

Quentin Caswell, MSN, is an Integrative and Functional Medicine Specialist dedicated to helping patients feel their best. Board certified in advanced bioidentical hormone replacement and peptide therapy, he earned his Master of Science in Nursing from the University of Missouri (Mizzou) and opened Advanced Practice Wellness Clinic in 2011.