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How It Works

1. Purchase tests
Choose the test you want (be sure to pick the laboratory you want to use).

2. Visit a Lab
After purchasing your testing you will receive an email with your lab requisition.  Bring this form to the laboratory.

3. Get Results
We’ll email you when your results are ready. Sign into your account to view and download your result reports.

T3 (Triiodothyronine), Total

This test measures the level of triiodothyronine (T3) in the body.

T3 is a hormone produced by the thyroid gland. T3 helps regulate metabolism and body temperature.

T3 can be bound to protein or circulate “freely” (unbound).  This test measures the total amount of T3, which includes both bound and unbound (free) T3. Because total T3 can be affected by protein levels and by certain medications (including estrogen and birth control pills),1 there is also an option for a free T3 test, which measures the T3 that is not bound to protein.

Lab Options - Choose One
1. Purchase Tests

Choose the test you want (be sure to pick the laboratory you want to use).

Pay by credit card or PayPal®.

You pay directly and we do not bill your insurance.

(Note: to preserve lowest possible per test pricing, a single $10.00 lab fee is applied to one or more blood tests. You will not incur any additional charges at the lab.)

2. Visit a Lab

After purchasing your testing you will receive an email with your lab requisition.  Bring this form to the laboratory.

NOTE: Be sure to visit the appropriate laboratory! 

If you choose LabCorp only visit a Labcorp location. 
If you choose Quest Diagnostics only visit a Quest location!

Find Your Lab Location.

No appointment is needed, but making one can minimize your wait time. 
Click here for HOURS & APPOINTMENTS

If you have selected the option to have an At Home Test Kit delivered to you, you will receive your test kit in the mail within 5 to 7 business days. (Not all tests are available as At Home Test Kits.)

3. Get Results

We’ll email you when your results are ready. Sign into your account to view and download your result reports.

Certain result values may prompt a phone call from our ordering provider to ensure the patient is aware of their result.

Sample Type
Blood
Prepare For Your Test
People taking high-dose biotin supplements (also called vitamin B7) should wait at least 24 hours after last biotin dose before sample collection.
Also Known As

Triiodothyronine

Frequently Ordered Together

Comprehensive Thyroid Panel
$465
 
$169

Measures the amount of thyroid-stimulating hormone TSH, Free T3, Free T4, T3 Uptake, T4, T7, T3 Total and Thyroid Peroxidase Antibody (TPO).

Thyroid Stimulating Hormone (TSH) and Free T4
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Measures the amount of thyroid-stimulating hormone (TSH) and free thyroxine (T4) to evaluate thyroid function

Patients Ultimately Purchase

Comprehensive Health Check - Men's
$5498
 
$1,999

This package combines over 50 tests including the Expanded Health Check and additional heart, diabetes, liver, kidney, thyroid, hormone, cancer and vitamin testing.

Comprehensive Health Check - Women's
$5498
 
$1,999

This package combines over 50 tests including the Expanded Health Check and additional heart, diabetes, liver, kidney, thyroid, hormone, cancer and vitamin testing.

Comprehensive Thyroid Panel
$465
 
$169

Measures the amount of thyroid-stimulating hormone TSH, Free T3, Free T4, T3 Uptake, T4, T7, T3 Total and Thyroid Peroxidase Antibody (TPO).

Expanded Health Check - Men's
$2198
 
$799

This panel includes the Essential Health Check plus additional heart, diabetes, liver, thyroid, hormone, cancer and vitamin testing.

Expanded Health Check - Women's
$2198
 
$799

This panel includes the Essential Health Check as well as additional heart, thyroid, hormone, cancer and vitamin testing.

Expanded Thyroid Panel
$218
 
$79

Measures the amount of thyroid-stimulating hormone (TSH), T3 uptake, T4, T7 and T3 Total.