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Midwest · Reverse T3 Test – rT3 Testing

Reverse T3 Test – rT3 Testing in Indiana

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 Indiana communities

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

Indianapolis1,659,305Reverse T3 Test – rT3 TestingFort Wayne330,305Reverse T3 Test – rT3 TestingSouth Bend290,915Reverse T3 Test – rT3 TestingEvansville226,788Reverse T3 Test – rT3 TestingLafayette166,793Reverse T3 Test – rT3 TestingElkhart147,679Reverse T3 Test – rT3 TestingBloomington106,327Reverse T3 Test – rT3 TestingCarmel98,137Reverse T3 Test – rT3 TestingFishers97,154Reverse T3 Test – rT3 TestingTerre Haute93,247Reverse T3 Test – rT3 TestingMuncie87,037Reverse T3 Test – rT3 TestingAnderson85,700Reverse T3 Test – rT3 TestingHammond77,491Reverse T3 Test – rT3 TestingGary69,739Reverse T3 Test – rT3 TestingNoblesville68,885Reverse T3 Test – rT3 TestingMichigan City65,946Reverse T3 Test – rT3 TestingGreenwood62,914Reverse T3 Test – rT3 TestingKokomo59,263Reverse T3 Test – rT3 TestingMishawaka50,823Reverse T3 Test – rT3 TestingColumbus50,718Reverse T3 Test – rT3 TestingJeffersonville49,178Reverse T3 Test – rT3 TestingLawrence49,048Reverse T3 Test – rT3 TestingWestfield45,695Reverse T3 Test – rT3 TestingWest Lafayette44,515Reverse T3 Test – rT3 TestingPortage37,540Reverse T3 Test – rT3 TestingNew Albany37,350Reverse T3 Test – rT3 TestingMerrillville36,196Reverse T3 Test – rT3 TestingRichmond35,854Reverse T3 Test – rT3 TestingGoshen34,792Reverse T3 Test – rT3 TestingPlainfield34,311Reverse T3 Test – rT3 TestingValparaiso33,820Reverse T3 Test – rT3 TestingCrown Point33,518Reverse T3 Test – rT3 TestingGranger30,394Reverse T3 Test – rT3 TestingZionsville30,258Reverse T3 Test – rT3 TestingHobart29,516Reverse T3 Test – rT3 TestingSchererville29,381Reverse T3 Test – rT3 TestingBrownsburg28,420Reverse T3 Test – rT3 TestingMarion27,757Reverse T3 Test – rT3 TestingEast Chicago26,502Reverse T3 Test – rT3 TestingFranklin25,112Reverse T3 Test – rT3 TestingMunster23,717Reverse T3 Test – rT3 TestingHighland23,695Reverse T3 Test – rT3 TestingGreenfield23,024Reverse T3 Test – rT3 TestingClarksville22,169Reverse T3 Test – rT3 TestingLa Porte21,993Reverse T3 Test – rT3 TestingSeymour21,192Reverse T3 Test – rT3 TestingAvon20,848Reverse T3 Test – rT3 TestingSt. John19,805Reverse T3 Test – rT3 TestingShelbyville19,710Reverse T3 Test – rT3 TestingLogansport18,471Reverse T3 Test – rT3 TestingNew Castle17,465Reverse T3 Test – rT3 TestingLebanon17,196Reverse T3 Test – rT3 TestingHuntington17,018Reverse T3 Test – rT3 TestingVincennes16,892Reverse T3 Test – rT3 TestingDyer16,422Reverse T3 Test – rT3 TestingCrawfordsville16,279Reverse T3 Test – rT3 TestingJasper16,231Reverse T3 Test – rT3 TestingGriffith16,213Reverse T3 Test – rT3 TestingFrankfort16,134Reverse T3 Test – rT3 TestingNew Haven15,922Reverse T3 Test – rT3 Testing