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Mountain West · Reverse T3 Test – rT3 Testing

Reverse T3 Test – rT3 Testing in Idaho

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 Idaho communities

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

Boise422,665Reverse T3 Test – rT3 TestingNampa194,547Reverse T3 Test – rT3 TestingMeridian115,227Reverse T3 Test – rT3 TestingCoeur d'Alene114,880Reverse T3 Test – rT3 TestingIdaho Falls101,326Reverse T3 Test – rT3 TestingPocatello74,359Reverse T3 Test – rT3 TestingCaldwell58,872Reverse T3 Test – rT3 TestingTwin Falls51,223Reverse T3 Test – rT3 TestingPost Falls38,162Reverse T3 Test – rT3 TestingLewiston33,964Reverse T3 Test – rT3 TestingRexburg33,684Reverse T3 Test – rT3 TestingEagle29,665Reverse T3 Test – rT3 TestingMoscow25,336Reverse T3 Test – rT3 TestingKuna23,765Reverse T3 Test – rT3 TestingAmmon17,401Reverse T3 Test – rT3 TestingMountain Home15,863Reverse T3 Test – rT3 TestingChubbuck15,445Reverse T3 Test – rT3 TestingHayden15,316Reverse T3 Test – rT3 TestingJerome12,182Reverse T3 Test – rT3 TestingBlackfoot12,106Reverse T3 Test – rT3 TestingGarden City12,056Reverse T3 Test – rT3 TestingBurley11,274Reverse T3 Test – rT3 TestingStar10,929Reverse T3 Test – rT3 TestingRathdrum9,099Reverse T3 Test – rT3 TestingMiddleton9,091Reverse T3 Test – rT3 TestingHailey9,001Reverse T3 Test – rT3 TestingSandpoint8,448Reverse T3 Test – rT3 TestingPayette7,999Reverse T3 Test – rT3 TestingEmmett7,408Reverse T3 Test – rT3 TestingRupert5,994Reverse T3 Test – rT3 TestingFruitland5,903Reverse T3 Test – rT3 TestingWeiser5,578Reverse T3 Test – rT3 TestingPreston5,545Reverse T3 Test – rT3 TestingRigby4,920Reverse T3 Test – rT3 TestingShelley4,784Reverse T3 Test – rT3 TestingBuhl4,532Reverse T3 Test – rT3 TestingAmerican Falls4,531Reverse T3 Test – rT3 TestingKimberly4,508Reverse T3 Test – rT3 TestingLincoln3,919Reverse T3 Test – rT3 TestingSt. Anthony3,677Reverse T3 Test – rT3 TestingGooding3,625Reverse T3 Test – rT3 TestingHeyburn3,592Reverse T3 Test – rT3 TestingMcCall3,568Reverse T3 Test – rT3 TestingKetchum3,448Reverse T3 Test – rT3 TestingHidden Springs3,382Reverse T3 Test – rT3 TestingVictor3,315Reverse T3 Test – rT3 TestingGrangeville3,296Reverse T3 Test – rT3 TestingOrofino3,216Reverse T3 Test – rT3 TestingSalmon3,114Reverse T3 Test – rT3 TestingSoda Springs3,084Reverse T3 Test – rT3 TestingSt. Maries2,951Reverse T3 Test – rT3 TestingMountain Home AFB2,863Reverse T3 Test – rT3 TestingWendell2,859Reverse T3 Test – rT3 TestingHomedale2,845Reverse T3 Test – rT3 TestingAberdeen2,795Reverse T3 Test – rT3 TestingFiler2,734Reverse T3 Test – rT3 TestingIona2,640Reverse T3 Test – rT3 TestingMontpelier2,610Reverse T3 Test – rT3 TestingBellevue2,508Reverse T3 Test – rT3 TestingFort Hall2,499Reverse T3 Test – rT3 Testing