Description
WHAT IS A TOTAL T4 / TOTAL THYROXINE LAB TEST?
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.
AM I REQUIRED TO FAST FOR THIS LAB TEST?
No.
WHAT IS THE PRICE OF A TOTAL T4 / TOTAL THYROXINE LAB TEST?
$49.00
*Price may vary by location – contact your local ANY LAB TEST NOW
TEST DETAILS:
Reference Range(s):
Pediatric | |
1-8 Years | 5.9-11.5 µg/dL |
9-13 Years | 4.7-10.4 µg/dL |
14-17 Years | 5.0-9.8 µg/dL |
Conversion Factor: 1 µg/dL = 12.9 nmol/L | |
Adult | 4.8-10.4 µg/dL |
Pregnancy | |
1st Trimester | 6.4-15.2 µg/dL |
2nd Trimester | 7.4-15.2 µg/dL |
3rd Trimester | 7.7-13.8 µg/dL |
All Trimesters Together | 7.0-14.7 µg/dL |
WHAT TYPE OF PHYSICIAN SHOULD I SEE IF MY LAB TEST RESULTS ARE OUT-OF-RANGE?
You should see your primary care physician or OB/GYN.
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