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South · Reverse T3 Test – rT3 Testing

Reverse T3 Test – rT3 Testing in Kentucky

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 Kentucky communities

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

Louisville1,022,630Reverse T3 Test – rT3 TestingLexington321,354Reverse T3 Test – rT3 TestingBowling Green98,537Reverse T3 Test – rT3 TestingElizabethtown78,446Reverse T3 Test – rT3 TestingOwensboro73,115Reverse T3 Test – rT3 TestingCovington40,930Reverse T3 Test – rT3 TestingGeorgetown36,281Reverse T3 Test – rT3 TestingRichmond34,662Reverse T3 Test – rT3 TestingFlorence31,699Reverse T3 Test – rT3 TestingNicholasville31,066Reverse T3 Test – rT3 TestingHopkinsville30,771Reverse T3 Test – rT3 TestingJeffersontown28,800Reverse T3 Test – rT3 TestingFrankfort28,479Reverse T3 Test – rT3 TestingIndependence28,256Reverse T3 Test – rT3 TestingHenderson28,201Reverse T3 Test – rT3 TestingPaducah26,248Reverse T3 Test – rT3 TestingRadcliff22,839Reverse T3 Test – rT3 TestingAshland21,695Reverse T3 Test – rT3 TestingMadisonville19,533Reverse T3 Test – rT3 TestingErlanger19,506Reverse T3 Test – rT3 TestingWinchester18,993Reverse T3 Test – rT3 TestingBurlington18,394Reverse T3 Test – rT3 TestingMount Washington17,723Reverse T3 Test – rT3 TestingSt. Matthews17,588Reverse T3 Test – rT3 TestingFort Thomas17,241Reverse T3 Test – rT3 TestingMurray17,241Reverse T3 Test – rT3 TestingDanville17,164Reverse T3 Test – rT3 TestingShelbyville16,932Reverse T3 Test – rT3 TestingShively15,638Reverse T3 Test – rT3 TestingBerea15,465Reverse T3 Test – rT3 TestingGlasgow14,922Reverse T3 Test – rT3 TestingNewport14,378Reverse T3 Test – rT3 TestingShepherdsville13,918Reverse T3 Test – rT3 TestingBardstown13,425Reverse T3 Test – rT3 TestingFort Campbell North13,323Reverse T3 Test – rT3 TestingSomerset11,696Reverse T3 Test – rT3 TestingLawrenceburg11,675Reverse T3 Test – rT3 TestingCampbellsville11,345Reverse T3 Test – rT3 TestingLyndon11,033Reverse T3 Test – rT3 TestingParis10,202Reverse T3 Test – rT3 TestingVersailles10,196Reverse T3 Test – rT3 TestingAlexandria10,125Reverse T3 Test – rT3 TestingFrancisville10,088Reverse T3 Test – rT3 TestingMayfield10,041Reverse T3 Test – rT3 TestingLa Grange9,901Reverse T3 Test – rT3 TestingFranklin9,885Reverse T3 Test – rT3 TestingOakbrook9,883Reverse T3 Test – rT3 TestingMiddlesborough9,493Reverse T3 Test – rT3 TestingMiddletown9,473Reverse T3 Test – rT3 TestingElsmere9,080Reverse T3 Test – rT3 TestingHarrodsburg8,952Reverse T3 Test – rT3 TestingFort Knox8,888Reverse T3 Test – rT3 TestingMaysville8,851Reverse T3 Test – rT3 TestingHillview8,638Reverse T3 Test – rT3 TestingFort Mitchell8,618Reverse T3 Test – rT3 TestingEdgewood8,427Reverse T3 Test – rT3 TestingCorbin8,397Reverse T3 Test – rT3 TestingOak Grove7,699Reverse T3 Test – rT3 TestingMount Sterling7,517Reverse T3 Test – rT3 TestingLondon7,492Reverse T3 Test – rT3 Testing