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Midwest · Reverse T3 Test – rT3 Testing

Reverse T3 Test – rT3 Testing in Iowa

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 Iowa communities

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

Des Moines514,654Reverse T3 Test – rT3 TestingDavenport280,282Reverse T3 Test – rT3 TestingCedar Rapids192,714Reverse T3 Test – rT3 TestingIowa City120,015Reverse T3 Test – rT3 TestingWaterloo114,594Reverse T3 Test – rT3 TestingSioux City111,924Reverse T3 Test – rT3 TestingDubuque67,916Reverse T3 Test – rT3 TestingWest Des Moines67,640Reverse T3 Test – rT3 TestingAnkeny66,346Reverse T3 Test – rT3 TestingAmes66,027Reverse T3 Test – rT3 TestingCouncil Bluffs62,617Reverse T3 Test – rT3 TestingUrbandale45,037Reverse T3 Test – rT3 TestingMarion41,023Reverse T3 Test – rT3 TestingCedar Falls40,500Reverse T3 Test – rT3 TestingBettendorf38,631Reverse T3 Test – rT3 TestingMarshalltown27,570Reverse T3 Test – rT3 TestingMason City27,385Reverse T3 Test – rT3 TestingOttumwa25,379Reverse T3 Test – rT3 TestingFort Dodge24,826Reverse T3 Test – rT3 TestingClinton24,651Reverse T3 Test – rT3 TestingBurlington24,160Reverse T3 Test – rT3 TestingMuscatine23,759Reverse T3 Test – rT3 TestingWaukee23,441Reverse T3 Test – rT3 TestingJohnston23,418Reverse T3 Test – rT3 TestingCoralville22,226Reverse T3 Test – rT3 TestingNorth Liberty19,976Reverse T3 Test – rT3 TestingAltoona19,345Reverse T3 Test – rT3 TestingClive18,323Reverse T3 Test – rT3 TestingNewton15,688Reverse T3 Test – rT3 TestingIndianola15,544Reverse T3 Test – rT3 TestingGrimes14,842Reverse T3 Test – rT3 TestingNorwalk12,592Reverse T3 Test – rT3 TestingBoone12,509Reverse T3 Test – rT3 TestingOskaloosa11,552Reverse T3 Test – rT3 TestingSpencer11,292Reverse T3 Test – rT3 TestingStorm Lake11,166Reverse T3 Test – rT3 TestingLe Mars10,462Reverse T3 Test – rT3 TestingPella10,414Reverse T3 Test – rT3 TestingFort Madison10,340Reverse T3 Test – rT3 TestingWaverly10,278Reverse T3 Test – rT3 TestingCarroll10,261Reverse T3 Test – rT3 TestingPleasant Hill10,203Reverse T3 Test – rT3 TestingKeokuk9,977Reverse T3 Test – rT3 TestingFairfield9,653Reverse T3 Test – rT3 TestingGrinnell9,481Reverse T3 Test – rT3 TestingMount Pleasant8,996Reverse T3 Test – rT3 TestingDenison8,323Reverse T3 Test – rT3 TestingSioux Center8,090Reverse T3 Test – rT3 TestingPerry7,836Reverse T3 Test – rT3 TestingWebster City7,825Reverse T3 Test – rT3 TestingDecorah7,767Reverse T3 Test – rT3 TestingClear Lake7,673Reverse T3 Test – rT3 TestingCreston7,594Reverse T3 Test – rT3 TestingKnoxville7,537Reverse T3 Test – rT3 TestingCharles City7,399Reverse T3 Test – rT3 TestingWashington7,314Reverse T3 Test – rT3 TestingHiawatha7,184Reverse T3 Test – rT3 TestingBondurant7,163Reverse T3 Test – rT3 TestingNevada7,017Reverse T3 Test – rT3 TestingAtlantic6,795Reverse T3 Test – rT3 Testing