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Pacific · Reverse T3 Test – rT3 Testing

Reverse T3 Test – rT3 Testing in Washington

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 Washington communities

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

Seattle3,438,221Reverse T3 Test – rT3 TestingSpokane440,270Reverse T3 Test – rT3 TestingKennewick241,230Reverse T3 Test – rT3 TestingBremerton219,538Reverse T3 Test – rT3 TestingTacoma217,332Reverse T3 Test – rT3 TestingOlympia200,836Reverse T3 Test – rT3 TestingVancouver188,331Reverse T3 Test – rT3 TestingMarysville164,655Reverse T3 Test – rT3 TestingBellevue149,365Reverse T3 Test – rT3 TestingKent134,890Reverse T3 Test – rT3 TestingYakima130,440Reverse T3 Test – rT3 TestingBellingham129,601Reverse T3 Test – rT3 TestingEverett110,438Reverse T3 Test – rT3 TestingRenton105,313Reverse T3 Test – rT3 TestingSpokane Valley102,178Reverse T3 Test – rT3 TestingFederal Way99,792Reverse T3 Test – rT3 TestingKirkland91,656Reverse T3 Test – rT3 TestingAuburn85,306Reverse T3 Test – rT3 TestingPasco76,398Reverse T3 Test – rT3 TestingRedmond72,166Reverse T3 Test – rT3 TestingWenatchee71,119Reverse T3 Test – rT3 TestingLongview67,958Reverse T3 Test – rT3 TestingMount Vernon67,767Reverse T3 Test – rT3 TestingSouth Hill66,713Reverse T3 Test – rT3 TestingSammamish66,532Reverse T3 Test – rT3 TestingLakewood62,972Reverse T3 Test – rT3 TestingRichland59,718Reverse T3 Test – rT3 TestingShoreline58,213Reverse T3 Test – rT3 TestingLacey52,572Reverse T3 Test – rT3 TestingBurien51,646Reverse T3 Test – rT3 TestingBothell47,355Reverse T3 Test – rT3 TestingEdmonds42,622Reverse T3 Test – rT3 TestingPuyallup42,366Reverse T3 Test – rT3 TestingIssaquah39,057Reverse T3 Test – rT3 TestingLynnwood38,812Reverse T3 Test – rT3 TestingParkland38,092Reverse T3 Test – rT3 TestingLake Stevens35,135Reverse T3 Test – rT3 TestingSpanaway34,670Reverse T3 Test – rT3 TestingUniversity Place34,565Reverse T3 Test – rT3 TestingWalla Walla33,765Reverse T3 Test – rT3 TestingGraham33,727Reverse T3 Test – rT3 TestingPullman32,968Reverse T3 Test – rT3 TestingDes Moines32,631Reverse T3 Test – rT3 TestingSeaTac30,867Reverse T3 Test – rT3 TestingOrchards28,371Reverse T3 Test – rT3 TestingMaple Valley27,643Reverse T3 Test – rT3 TestingCamas25,774Reverse T3 Test – rT3 TestingMill Creek East25,528Reverse T3 Test – rT3 TestingMercer Island25,506Reverse T3 Test – rT3 TestingTumwater24,855Reverse T3 Test – rT3 TestingMoses Lake24,764Reverse T3 Test – rT3 TestingNorth Lynnwood24,562Reverse T3 Test – rT3 TestingBainbridge Island24,557Reverse T3 Test – rT3 TestingOak Harbor24,267Reverse T3 Test – rT3 TestingKenmore23,556Reverse T3 Test – rT3 TestingEastmont23,088Reverse T3 Test – rT3 TestingUnion Hill-Novelty Hill23,060Reverse T3 Test – rT3 TestingCottage Lake22,779Reverse T3 Test – rT3 TestingMartha Lake22,251Reverse T3 Test – rT3 TestingBonney Lake22,229Reverse T3 Test – rT3 Testing