Mountain West · Reverse T3 Test – rT3 Testing

Reverse T3 Test – rT3 Testing in Wyoming

This page explains the reverse t3 test – rt3 testing, what it measures, and how to order it. The Reverse T3 Test measures the level of reverse triiodothyronine in the blood to assess thyroid function under certain conditions.

Sample typeBlood draw at a collection lab

ReferralNo referral required

What this test is

The Reverse T3 Test is a blood test that evaluates the level of reverse triiodothyronine (rT3), a hormone related to thyroid function. It is often used to assess thyroid activity in the context of nonthyroidal illness syndrome.

What it measures

Reverse T3 — reflects the body's conversion of thyroxine (T4) to triiodothyronine (T3)

What the test involves

The test involves a standard blood draw, typically from a vein in the arm. The collected sample is then analyzed in a laboratory.

Why it is often ordered

Clinicians may order this test to investigate thyroid function when a patient has symptoms that suggest abnormal thyroid activity. It helps differentiate between thyroid disorders and other conditions affecting thyroid hormone levels.

Preparation

Preparation for the Reverse T3 Test may vary, so it is important to follow the specific instructions provided by the laboratory conducting the test.

How results are reported

Results of the Reverse T3 Test are reported as a concentration of rT3 in the blood. Reference ranges can vary between laboratories, so results should be interpreted in context.

Before you go

Sample collection method
Preparation instructions
Turnaround time

Cities

Reverse T3 Test – rT3 Testing in Wyoming communities

Choose your city for local context and to request this test.

Cheyenne76,456Reverse T3 Test – rT3 Testing Casper63,962Reverse T3 Test – rT3 Testing Gillette33,047Reverse T3 Test – rT3 Testing Laramie31,501Reverse T3 Test – rT3 Testing Rock Springs23,505Reverse T3 Test – rT3 Testing Sheridan18,660Reverse T3 Test – rT3 Testing Green River11,887Reverse T3 Test – rT3 Testing Evanston11,802Reverse T3 Test – rT3 Testing Jackson10,728Reverse T3 Test – rT3 Testing Riverton10,619Reverse T3 Test – rT3 Testing Cody10,055Reverse T3 Test – rT3 Testing Rawlins8,382Reverse T3 Test – rT3 Testing Lander7,551Reverse T3 Test – rT3 Testing Powell6,385Reverse T3 Test – rT3 Testing Douglas6,330Reverse T3 Test – rT3 Testing Torrington6,196Reverse T3 Test – rT3 Testing Ranchettes6,179Reverse T3 Test – rT3 Testing Worland4,843Reverse T3 Test – rT3 Testing Buffalo4,389Reverse T3 Test – rT3 Testing South Greeley4,385Reverse T3 Test – rT3 Testing Fox Farm-College4,321Reverse T3 Test – rT3 Testing Mills4,106Reverse T3 Test – rT3 Testing Wheatland3,567Reverse T3 Test – rT3 Testing Newcastle3,283Reverse T3 Test – rT3 Testing Glenrock2,914Reverse T3 Test – rT3 Testing Bar Nunn2,897Reverse T3 Test – rT3 Testing Warren AFB2,884Reverse T3 Test – rT3 Testing Thermopolis2,826Reverse T3 Test – rT3 Testing Evansville2,730Reverse T3 Test – rT3 Testing Kemmerer2,632Reverse T3 Test – rT3 Testing North Rock Springs2,497Reverse T3 Test – rT3 Testing Hoback2,268Reverse T3 Test – rT3 Testing Greybull2,187Reverse T3 Test – rT3 Testing Afton2,181Reverse T3 Test – rT3 Testing Lovell2,176Reverse T3 Test – rT3 Testing Star Valley Ranch2,168Reverse T3 Test – rT3 Testing Pinedale2,058Reverse T3 Test – rT3 Testing South Park1,896Reverse T3 Test – rT3 Testing Wright1,754Reverse T3 Test – rT3 Testing Lyman1,729Reverse T3 Test – rT3 Testing Saratoga1,693Reverse T3 Test – rT3 Testing Arapahoe1,665Reverse T3 Test – rT3 Testing Fort Washakie1,647Reverse T3 Test – rT3 Testing Lusk1,577Reverse T3 Test – rT3 Testing Ethete1,561Reverse T3 Test – rT3 Testing Wilson1,407Reverse T3 Test – rT3 Testing Sundance1,361Reverse T3 Test – rT3 Testing Basin1,356Reverse T3 Test – rT3 Testing Pine Bluffs1,273Reverse T3 Test – rT3 Testing Grover1,269Reverse T3 Test – rT3 Testing Ranchester1,211Reverse T3 Test – rT3 Testing Marbleton1,165Reverse T3 Test – rT3 Testing Sleepy Hollow1,140Reverse T3 Test – rT3 Testing Rafter J Ranch1,139Reverse T3 Test – rT3 Testing Moose Wilson Road1,130Reverse T3 Test – rT3 Testing Upton1,031Reverse T3 Test – rT3 Testing Guernsey1,016Reverse T3 Test – rT3 Testing