Total T4 Test in Washington
Total T4 Test is a laboratory test you can order directly. A total T4 test measures the total amount of thyroxine (T4), a thyroid hormone, in your blood. It is often ordered to help evaluate thyroid function when symptoms such as fatigue, weight changes, or irregular heartbeat are present. This page covers the total t4 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
- $49
- Referral
- Not required
A total T4 test measures the total amount of thyroxine (T4), a thyroid hormone, in your blood. It is often ordered to help evaluate thyroid function when symptoms such as fatigue, weight changes, or irregular heartbeat are present.
What it measures
- Total T4 — The combined amount of T4 that is free and bound to proteins in the blood.
- Free T4 (indirect) — Sometimes calculated from total T4 and a protein measurement, but not directly measured in this test.
- Thyroxine-binding globulin (TBG) — A protein that binds T4; not directly measured, but its levels can affect total T4 results.
Who it is for
A healthcare provider typically orders a total T4 test when checking for an overactive or underactive thyroid, or to monitor thyroid treatment.
Preparation
No fasting is required. Tell your provider about any medications, especially thyroid drugs or birth control, as they can affect results.
Results and what they mean
Results are reported as a number with a reference range, usually in micrograms per deciliter (mcg/dL). A clinician interprets your result along with your symptoms, history, and other thyroid tests. This is general information, not medical advice.
Requesting the Total T4 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 total T4 test?
No, fasting is not needed. You can eat and drink normally before the blood draw.
What can affect my total T4 result?
Pregnancy, birth control pills, and some medications can raise or lower total T4. Always share your medication list with your provider.
Is total T4 the same as free T4?
No. Total T4 includes both bound and free hormone, while free T4 measures only the unbound, active portion. They are different tests.
How long until I get my results?
Results are typically available within 1 to 3 business days.
Total T4 Test by city in Washington
- Total T4 Test in Seattle
- Total T4 Test in Spokane
- Total T4 Test in Kennewick
- Total T4 Test in Bremerton
- Total T4 Test in Tacoma
- Total T4 Test in Olympia
- Total T4 Test in Vancouver
- Total T4 Test in Marysville
- Total T4 Test in Bellevue
- Total T4 Test in Kent
- Total T4 Test in Yakima
- Total T4 Test in Bellingham
- Total T4 Test in Everett
- Total T4 Test in Renton
- Total T4 Test in Spokane Valley
- Total T4 Test in Federal Way
- Total T4 Test in Kirkland
- Total T4 Test in Auburn
- Total T4 Test in Pasco
- Total T4 Test in Redmond
- Total T4 Test in Wenatchee
- Total T4 Test in Longview
- Total T4 Test in Mount Vernon
- Total T4 Test in South Hill
- Total T4 Test in Sammamish
- Total T4 Test in Lakewood
- Total T4 Test in Richland
- Total T4 Test in Shoreline
- Total T4 Test in Lacey
- Total T4 Test in Burien
- Total T4 Test in Bothell
- Total T4 Test in Edmonds
- Total T4 Test in Puyallup
- Total T4 Test in Issaquah
- Total T4 Test in Lynnwood
- Total T4 Test in Parkland
- Total T4 Test in Lake Stevens
- Total T4 Test in Spanaway
- Total T4 Test in University Place
- Total T4 Test in Walla Walla