Reverse T3 Test in Washington
This page explains the reverse t3 test, what it measures, and how to arrange it. A reverse T3 test measures the amount of reverse T3, an inactive form of thyroid hormone, in a blood sample. It is usually ordered when a person has thyroid symptoms that do not match their other thyroid test results, or when a clinician is evaluating how the body converts thyroid hormone. This page covers the reverse t3 test for people in Washington, in Pacific, from what it measures to how to arrange a draw.
- Sample type
- blood
- Category
- Thyroid
- Turnaround
- 1-3 business days
- Price
- $118
- Referral
- Not required
A reverse T3 test measures the amount of reverse T3, an inactive form of thyroid hormone, in a blood sample. It is usually ordered when a person has thyroid symptoms that do not match their other thyroid test results, or when a clinician is evaluating how the body converts thyroid hormone.
What it measures
- Reverse T3 — The main hormone measured; it is an inactive form of T3.
- Total T3 — Often checked alongside reverse T3 to compare active and inactive hormone levels.
- Free T4 — A storage form of thyroid hormone that the body converts into T3 or reverse T3.
- TSH — A pituitary signal that helps show whether the thyroid is being stimulated.
- Free T3 — The active thyroid hormone that affects energy, temperature, and metabolism.
Who it is for
A clinician such as an endocrinologist, primary care doctor, or other licensed provider may order this test when thyroid symptoms persist despite normal standard thyroid tests. It is not a routine screening test.
Preparation
No fasting is usually required. Tell your clinician about all medications, supplements, and recent illness, because these can affect thyroid hormone levels.
Results and what they mean
Results are reported as a numeric level for reverse T3 and any other markers tested, along with the laboratory's reference range. A clinician interprets these numbers together with your symptoms, history, and other thyroid tests. This is general information only and is not medical advice; discuss your results with a qualified healthcare professional.
Requesting the Reverse T3 Test in Washington
Order online, choose a certified collection site in Washington, and review results through a secure portal. No referral is required, and orders are processed confidentially. Access across Pacific is uneven, so confirming a site ahead of time is worthwhile.
Frequently asked questions
Do I need to fast for a reverse T3 test?
No. Fasting is not normally required for this blood test.
Can I take my thyroid medication before the test?
Ask your clinician. Some medications may need to be timed differently, but do not stop or change any medication without medical advice.
How long until results are ready?
Results are typically available within 1 to 3 business days, though this can vary by laboratory.
Is a high reverse T3 always a problem?
No. Reverse T3 levels can rise with stress, illness, or dieting. Only a clinician can interpret what your result means for you.
Reverse T3 Test by city in Washington
- Reverse T3 Test in Seattle
- Reverse T3 Test in Spokane
- Reverse T3 Test in Kennewick
- Reverse T3 Test in Bremerton
- Reverse T3 Test in Tacoma
- Reverse T3 Test in Olympia
- Reverse T3 Test in Vancouver
- Reverse T3 Test in Marysville
- Reverse T3 Test in Bellevue
- Reverse T3 Test in Kent
- Reverse T3 Test in Yakima
- Reverse T3 Test in Bellingham
- Reverse T3 Test in Everett
- Reverse T3 Test in Renton
- Reverse T3 Test in Spokane Valley
- Reverse T3 Test in Federal Way
- Reverse T3 Test in Kirkland
- Reverse T3 Test in Auburn
- Reverse T3 Test in Pasco
- Reverse T3 Test in Redmond
- Reverse T3 Test in Wenatchee
- Reverse T3 Test in Longview
- Reverse T3 Test in Mount Vernon
- Reverse T3 Test in South Hill
- Reverse T3 Test in Sammamish
- Reverse T3 Test in Lakewood
- Reverse T3 Test in Richland
- Reverse T3 Test in Shoreline
- Reverse T3 Test in Lacey
- Reverse T3 Test in Burien
- Reverse T3 Test in Bothell
- Reverse T3 Test in Edmonds
- Reverse T3 Test in Puyallup
- Reverse T3 Test in Issaquah
- Reverse T3 Test in Lynnwood
- Reverse T3 Test in Parkland
- Reverse T3 Test in Lake Stevens
- Reverse T3 Test in Spanaway
- Reverse T3 Test in University Place
- Reverse T3 Test in Walla Walla