Southwest · Reverse T3 Test – rT3 Testing

Reverse T3 Test – rT3 Testing in Nevada

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 Nevada communities

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

Las Vegas2,150,373Reverse T3 Test – rT3 Testing Reno463,328Reverse T3 Test – rT3 Testing Henderson311,250Reverse T3 Test – rT3 Testing North Las Vegas259,638Reverse T3 Test – rT3 Testing Enterprise219,566Reverse T3 Test – rT3 Testing Spring Valley217,441Reverse T3 Test – rT3 Testing Sunrise Manor196,411Reverse T3 Test – rT3 Testing Paradise189,852Reverse T3 Test – rT3 Testing Sparks106,900Reverse T3 Test – rT3 Testing Carson City57,957Reverse T3 Test – rT3 Testing Whitney45,105Reverse T3 Test – rT3 Testing Pahrump42,471Reverse T3 Test – rT3 Testing Winchester36,307Reverse T3 Test – rT3 Testing Summerlin South28,861Reverse T3 Test – rT3 Testing Sun Valley22,622Reverse T3 Test – rT3 Testing Fernley22,343Reverse T3 Test – rT3 Testing Elko20,391Reverse T3 Test – rT3 Testing Mesquite20,019Reverse T3 Test – rT3 Testing Spanish Springs16,131Reverse T3 Test – rT3 Testing Spring Creek15,176Reverse T3 Test – rT3 Testing Dayton15,036Reverse T3 Test – rT3 Testing Boulder City14,868Reverse T3 Test – rT3 Testing Gardnerville Ranchos11,761Reverse T3 Test – rT3 Testing Cold Springs10,920Reverse T3 Test – rT3 Testing Incline Village9,440Reverse T3 Test – rT3 Testing Fallon9,068Reverse T3 Test – rT3 Testing Winnemucca8,325Reverse T3 Test – rT3 Testing Laughlin8,174Reverse T3 Test – rT3 Testing Moapa Valley7,436Reverse T3 Test – rT3 Testing Johnson Lane6,277Reverse T3 Test – rT3 Testing Gardnerville6,037Reverse T3 Test – rT3 Testing Indian Hills5,955Reverse T3 Test – rT3 Testing Lemmon Valley5,100Reverse T3 Test – rT3 Testing Silver Springs4,684Reverse T3 Test – rT3 Testing West Wendover4,517Reverse T3 Test – rT3 Testing Battle Mountain4,122Reverse T3 Test – rT3 Testing Ely3,983Reverse T3 Test – rT3 Testing Nellis AFB3,626Reverse T3 Test – rT3 Testing Minden3,335Reverse T3 Test – rT3 Testing Yerington3,093Reverse T3 Test – rT3 Testing Washoe Valley2,800Reverse T3 Test – rT3 Testing Hawthorne2,786Reverse T3 Test – rT3 Testing Stagecoach2,313Reverse T3 Test – rT3 Testing Carlin2,279Reverse T3 Test – rT3 Testing Kingsbury1,981Reverse T3 Test – rT3 Testing Tonopah1,895Reverse T3 Test – rT3 Testing Lovelock1,747Reverse T3 Test – rT3 Testing Sandy Valley1,723Reverse T3 Test – rT3 Testing Topaz Ranch Estates1,654Reverse T3 Test – rT3 Testing Ruhenstroth1,511Reverse T3 Test – rT3 Testing Amargosa Valley1,455Reverse T3 Test – rT3 Testing Smith Valley1,454Reverse T3 Test – rT3 Testing East Valley1,450Reverse T3 Test – rT3 Testing Mogul1,421Reverse T3 Test – rT3 Testing Pioche1,158Reverse T3 Test – rT3 Testing Alamo1,154Reverse T3 Test – rT3 Testing Jackpot1,130Reverse T3 Test – rT3 Testing Wells1,105Reverse T3 Test – rT3 Testing Verdi1,094Reverse T3 Test – rT3 Testing Panaca1,038Reverse T3 Test – rT3 Testing