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New England · Reverse T3 Test – rT3 Testing

Reverse T3 Test – rT3 Testing in Connecticut

This page explains the reverse t3 test – rt3 testing, what it measures, and how to order it. The Reverse T3 blood test measures a form of thyroid hormone that may be elevated during certain illnesses.

Typical turnaround1-3 business days
Price range$118
PreparationFollow the lab's instructions.
Sample typeBlood draw at a collection lab
ReferralNo referral required

What this test is

Reverse T3 (rT3) is an inactive form of thyroid hormone. This test helps evaluate thyroid function, particularly in situations where other thyroid tests may appear normal.

What it measures

  • Reverse T3 (rT3) — reflects an inactive form of thyroid hormone

What the test involves

This test requires a blood sample, which is typically collected through a standard venipuncture procedure at a laboratory or clinic.

Why it is often ordered

Clinicians may order this test to help assess thyroid hormone metabolism, especially when considering conditions like nonthyroidal illness syndrome. It can provide additional information when evaluating thyroid health in the context of other medical conditions.

Preparation

You will need to follow specific instructions provided by the laboratory regarding preparation for this test. This may include fasting or avoiding certain medications.

How results are reported

Results are typically available within a few business days and will be reported to your clinician. Reference ranges, which indicate what is considered normal, vary between laboratories.

Before you go

  • Fasting requirements
  • Medication restrictions
  • Test turnaround time

Cities

Reverse T3 Test – rT3 Testing in Connecticut communities

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

Bridgeport975,078Reverse T3 Test – rT3 TestingHartford907,046Reverse T3 Test – rT3 TestingNew Haven587,648Reverse T3 Test – rT3 TestingNorwich201,726Reverse T3 Test – rT3 TestingWaterbury199,552Reverse T3 Test – rT3 TestingDanbury177,722Reverse T3 Test – rT3 TestingStamford134,820Reverse T3 Test – rT3 TestingNorwalk90,821Reverse T3 Test – rT3 TestingNew Britain74,022Reverse T3 Test – rT3 TestingMeriden60,790Reverse T3 Test – rT3 TestingBristol60,733Reverse T3 Test – rT3 TestingWest Haven55,518Reverse T3 Test – rT3 TestingMilford city 50,694Reverse T3 Test – rT3 TestingMiddletown47,164Reverse T3 Test – rT3 TestingShelton40,944Reverse T3 Test – rT3 TestingTorrington35,447Reverse T3 Test – rT3 TestingNaugatuck31,586Reverse T3 Test – rT3 TestingNew London27,585Reverse T3 Test – rT3 TestingWallingford Center19,211Reverse T3 Test – rT3 TestingAnsonia18,945Reverse T3 Test – rT3 TestingWillimantic18,150Reverse T3 Test – rT3 TestingStorrs16,784Reverse T3 Test – rT3 TestingDerby12,387Reverse T3 Test – rT3 TestingTrumbull Center10,468Reverse T3 Test – rT3 TestingKensington9,626Reverse T3 Test – rT3 TestingOakville9,507Reverse T3 Test – rT3 TestingConning Towers Nautilus Park9,479Reverse T3 Test – rT3 TestingSandy Hook9,406Reverse T3 Test – rT3 TestingRiverside9,133Reverse T3 Test – rT3 TestingLong Hill8,307Reverse T3 Test – rT3 TestingGlastonbury Center8,187Reverse T3 Test – rT3 TestingThompsonville8,134Reverse T3 Test – rT3 TestingSouthwood Acres7,875Reverse T3 Test – rT3 TestingRockville7,612Reverse T3 Test – rT3 TestingNew Canaan7,399Reverse T3 Test – rT3 TestingStaples7,125Reverse T3 Test – rT3 TestingCos Cob7,089Reverse T3 Test – rT3 TestingOld Greenwich6,929Reverse T3 Test – rT3 TestingWinsted6,662Reverse T3 Test – rT3 TestingNorthford6,117Reverse T3 Test – rT3 TestingSimsbury Center6,072Reverse T3 Test – rT3 TestingHazardville6,070Reverse T3 Test – rT3 TestingCheshire Village6,006Reverse T3 Test – rT3 TestingBranford Center5,934Reverse T3 Test – rT3 TestingDaniels Farm5,764Reverse T3 Test – rT3 TestingSherwood Manor5,710Reverse T3 Test – rT3 TestingNoroton5,682Reverse T3 Test – rT3 TestingPawcatuck5,383Reverse T3 Test – rT3 TestingLake Pocotopaug5,124Reverse T3 Test – rT3 TestingTerryville5,110Reverse T3 Test – rT3 TestingByram4,994Reverse T3 Test – rT3 TestingLong Hill4,645Reverse T3 Test – rT3 TestingQuinnipiac University4,614Reverse T3 Test – rT3 TestingStafford Springs4,611Reverse T3 Test – rT3 TestingMystic4,354Reverse T3 Test – rT3 TestingEast Village4,250Reverse T3 Test – rT3 TestingHeritage Village4,232Reverse T3 Test – rT3 TestingDanielson4,146Reverse T3 Test – rT3 TestingBroad Brook4,145Reverse T3 Test – rT3 TestingOronoque3,790Reverse T3 Test – rT3 Testing