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South · Reverse T3 Test – rT3 Testing

Reverse T3 Test – rT3 Testing in Virginia

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 Virginia communities

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

Virginia Beach1,500,764Reverse T3 Test – rT3 TestingRichmond1,008,069Reverse T3 Test – rT3 TestingChesapeake247,172Reverse T3 Test – rT3 TestingNorfolk238,556Reverse T3 Test – rT3 TestingArlington235,764Reverse T3 Test – rT3 TestingRoanoke215,781Reverse T3 Test – rT3 TestingNewport News185,069Reverse T3 Test – rT3 TestingAlexandria158,185Reverse T3 Test – rT3 TestingFredericksburg155,414Reverse T3 Test – rT3 TestingHampton136,748Reverse T3 Test – rT3 TestingLynchburg120,877Reverse T3 Test – rT3 TestingCharlottesville102,164Reverse T3 Test – rT3 TestingPortsmouth97,454Reverse T3 Test – rT3 TestingBlacksburg94,398Reverse T3 Test – rT3 TestingSuffolk93,268Reverse T3 Test – rT3 TestingWilliamsburg83,021Reverse T3 Test – rT3 TestingHarrisonburg74,901Reverse T3 Test – rT3 TestingWinchester74,593Reverse T3 Test – rT3 TestingDale City73,716Reverse T3 Test – rT3 TestingCentreville73,064Reverse T3 Test – rT3 TestingReston62,453Reverse T3 Test – rT3 TestingMcLean49,310Reverse T3 Test – rT3 TestingLeesburg48,223Reverse T3 Test – rT3 TestingTuckahoe48,187Reverse T3 Test – rT3 TestingAshburn44,950Reverse T3 Test – rT3 TestingLake Ridge44,697Reverse T3 Test – rT3 TestingBurke44,191Reverse T3 Test – rT3 TestingWoodbridge42,734Reverse T3 Test – rT3 TestingManassas42,596Reverse T3 Test – rT3 TestingDanville42,556Reverse T3 Test – rT3 TestingLinton Hall42,089Reverse T3 Test – rT3 TestingAnnandale41,869Reverse T3 Test – rT3 TestingMechanicsville37,767Reverse T3 Test – rT3 TestingOakton36,675Reverse T3 Test – rT3 TestingFair Oaks34,437Reverse T3 Test – rT3 TestingSouth Riding33,828Reverse T3 Test – rT3 TestingPetersburg33,229Reverse T3 Test – rT3 TestingSpringfield31,769Reverse T3 Test – rT3 TestingSterling31,202Reverse T3 Test – rT3 TestingWest Falls Church31,023Reverse T3 Test – rT3 TestingShort Pump27,332Reverse T3 Test – rT3 TestingTysons26,171Reverse T3 Test – rT3 TestingStaunton25,358Reverse T3 Test – rT3 TestingSalem25,335Reverse T3 Test – rT3 TestingCave Spring25,248Reverse T3 Test – rT3 TestingHerndon24,574Reverse T3 Test – rT3 TestingBailey's Crossroads24,501Reverse T3 Test – rT3 TestingFairfax23,980Reverse T3 Test – rT3 TestingChantilly23,564Reverse T3 Test – rT3 TestingWest Springfield23,562Reverse T3 Test – rT3 TestingChristiansburg23,174Reverse T3 Test – rT3 TestingHopewell23,020Reverse T3 Test – rT3 TestingWoodlawn22,590Reverse T3 Test – rT3 TestingChester22,512Reverse T3 Test – rT3 TestingWaynesboro22,149Reverse T3 Test – rT3 TestingCherry Hill22,118Reverse T3 Test – rT3 TestingBrambleton21,986Reverse T3 Test – rT3 TestingMontclair21,961Reverse T3 Test – rT3 TestingRose Hill21,466Reverse T3 Test – rT3 TestingLorton21,394Reverse T3 Test – rT3 Testing