Midwest · Reverse T3 Test – rT3 Testing

Reverse T3 Test – rT3 Testing in North Dakota

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 North Dakota communities

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

Fargo207,310Reverse T3 Test – rT3 Testing Bismarck89,825Reverse T3 Test – rT3 Testing Grand Forks63,767Reverse T3 Test – rT3 Testing Minot48,005Reverse T3 Test – rT3 Testing West Fargo37,913Reverse T3 Test – rT3 Testing Williston27,368Reverse T3 Test – rT3 Testing Dickinson24,851Reverse T3 Test – rT3 Testing Mandan23,784Reverse T3 Test – rT3 Testing Jamestown15,823Reverse T3 Test – rT3 Testing Wahpeton7,928Reverse T3 Test – rT3 Testing Valley City6,586Reverse T3 Test – rT3 Testing Watford City5,725Reverse T3 Test – rT3 Testing Minot AFB5,375Reverse T3 Test – rT3 Testing Grafton4,186Reverse T3 Test – rT3 Testing Lincoln4,126Reverse T3 Test – rT3 Testing Horace3,141Reverse T3 Test – rT3 Testing Beulah3,070Reverse T3 Test – rT3 Testing New Town2,745Reverse T3 Test – rT3 Testing Grand Forks AFB2,678Reverse T3 Test – rT3 Testing Hazen2,564Reverse T3 Test – rT3 Testing Rugby2,546Reverse T3 Test – rT3 Testing Casselton2,493Reverse T3 Test – rT3 Testing Bottineau2,141Reverse T3 Test – rT3 Testing Carrington2,133Reverse T3 Test – rT3 Testing Lisbon2,109Reverse T3 Test – rT3 Testing Stanley2,079Reverse T3 Test – rT3 Testing Oakes1,981Reverse T3 Test – rT3 Testing Mayville1,964Reverse T3 Test – rT3 Testing Langdon1,924Reverse T3 Test – rT3 Testing Belcourt1,751Reverse T3 Test – rT3 Testing Harvey1,701Reverse T3 Test – rT3 Testing Hillsboro1,613Reverse T3 Test – rT3 Testing Bowman1,604Reverse T3 Test – rT3 Testing Garrison1,577Reverse T3 Test – rT3 Testing Park River1,577Reverse T3 Test – rT3 Testing Washburn1,545Reverse T3 Test – rT3 Testing Burlington1,534Reverse T3 Test – rT3 Testing Surrey1,430Reverse T3 Test – rT3 Testing Larimore1,385Reverse T3 Test – rT3 Testing New Rockford1,374Reverse T3 Test – rT3 Testing Cavalier1,357Reverse T3 Test – rT3 Testing Tioga1,335Reverse T3 Test – rT3 Testing Parshall1,317Reverse T3 Test – rT3 Testing Cando1,228Reverse T3 Test – rT3 Testing Shell Valley1,227Reverse T3 Test – rT3 Testing Thompson1,194Reverse T3 Test – rT3 Testing Rolla1,192Reverse T3 Test – rT3 Testing Mapleton1,169Reverse T3 Test – rT3 Testing Fort Totten1,167Reverse T3 Test – rT3 Testing Velva1,120Reverse T3 Test – rT3 Testing Hettinger1,116Reverse T3 Test – rT3 Testing Crosby1,076Reverse T3 Test – rT3 Testing Ellendale1,067Reverse T3 Test – rT3 Testing Enderlin1,039Reverse T3 Test – rT3 Testing Beach1,017Reverse T3 Test – rT3 Testing