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South · Reverse T3 Test – rT3 Testing

Reverse T3 Test – rT3 Testing in North Carolina

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 North Carolina communities

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

Charlotte1,516,107Reverse T3 Test – rT3 TestingRaleigh1,062,018Reverse T3 Test – rT3 TestingWinston-Salem420,400Reverse T3 Test – rT3 TestingDurham399,762Reverse T3 Test – rT3 TestingGreensboro345,270Reverse T3 Test – rT3 TestingFayetteville328,827Reverse T3 Test – rT3 TestingAsheville316,694Reverse T3 Test – rT3 TestingConcord264,492Reverse T3 Test – rT3 TestingWilmington247,372Reverse T3 Test – rT3 TestingHickory211,042Reverse T3 Test – rT3 TestingGastonia194,190Reverse T3 Test – rT3 TestingHigh Point178,800Reverse T3 Test – rT3 TestingCary171,603Reverse T3 Test – rT3 TestingBurlington137,096Reverse T3 Test – rT3 TestingGreenville122,921Reverse T3 Test – rT3 TestingJacksonville108,549Reverse T3 Test – rT3 TestingRocky Mount61,952Reverse T3 Test – rT3 TestingChapel Hill60,920Reverse T3 Test – rT3 TestingHuntersville60,166Reverse T3 Test – rT3 TestingApex58,066Reverse T3 Test – rT3 TestingKannapolis52,173Reverse T3 Test – rT3 TestingMooresville48,431Reverse T3 Test – rT3 TestingWilson47,914Reverse T3 Test – rT3 TestingWake Forest46,387Reverse T3 Test – rT3 TestingHolly Springs40,198Reverse T3 Test – rT3 TestingIndian Trail39,603Reverse T3 Test – rT3 TestingSalisbury35,258Reverse T3 Test – rT3 TestingMonroe34,464Reverse T3 Test – rT3 TestingGoldsboro33,214Reverse T3 Test – rT3 TestingFuquay-Varina33,135Reverse T3 Test – rT3 TestingNew Bern31,058Reverse T3 Test – rT3 TestingCornelius30,925Reverse T3 Test – rT3 TestingGarner30,859Reverse T3 Test – rT3 TestingSanford30,024Reverse T3 Test – rT3 TestingMatthews29,417Reverse T3 Test – rT3 TestingMorrisville28,824Reverse T3 Test – rT3 TestingStatesville27,777Reverse T3 Test – rT3 TestingThomasville26,941Reverse T3 Test – rT3 TestingAsheboro26,729Reverse T3 Test – rT3 TestingKernersville26,376Reverse T3 Test – rT3 TestingMint Hill26,236Reverse T3 Test – rT3 TestingClayton25,486Reverse T3 Test – rT3 TestingLeland22,794Reverse T3 Test – rT3 TestingShelby21,564Reverse T3 Test – rT3 TestingCarrboro21,237Reverse T3 Test – rT3 TestingClemmons21,032Reverse T3 Test – rT3 TestingKinston19,888Reverse T3 Test – rT3 TestingWaxhaw19,645Reverse T3 Test – rT3 TestingLexington19,347Reverse T3 Test – rT3 TestingLumberton19,186Reverse T3 Test – rT3 TestingKnightdale18,614Reverse T3 Test – rT3 TestingElizabeth City18,466Reverse T3 Test – rT3 TestingHarrisburg18,415Reverse T3 Test – rT3 TestingLenoir18,205Reverse T3 Test – rT3 TestingBoone18,055Reverse T3 Test – rT3 TestingHavelock17,570Reverse T3 Test – rT3 TestingHope Mills17,421Reverse T3 Test – rT3 TestingMorganton17,389Reverse T3 Test – rT3 TestingMount Holly17,315Reverse T3 Test – rT3 TestingPinehurst17,250Reverse T3 Test – rT3 Testing