Free T4 test cost in Washington
In Washington, 33 hospitals publish a cash price for free T4 (free thyroxine) thyroid blood test: from $6.38 to $156.80, with a median of $63.84. The lowest price is at Legacy Salmon Creek Medical Center (Vancouver). The highest price is 24.6× the lowest.
Outpatient cash prices, one line per hospital — its lowest listed price for code 84439. Prices for both sides of the body and inpatient prices are not mixed in. Collected Sep 23, 2026.
Lowest$6.38Legacy Salmon Creek Medical Center
Median$63.84half pay less
Highest$156.80in Washington
Lowest saves$57.46vs the median
Hospitals in Washington, cheapest first
| Hospital | Cash price | List price | File date |
|---|---|---|---|
| Legacy Salmon Creek Medical Center lowest Vancouver · Portland-Vancouver-Hillsboro, OR-WA CHG ASSAY OF FREE THYROXINE | $6.38 | $9.82 | Apr 1, 2026 source file |
| Overlake Medical Center & Clinics Bellevue · Seattle-Tacoma-Bellevue, WA Hc T4, Free-Lc | $13.61 | $27.22 | Apr 1, 2026 source file |
| Providence St Mary Medical Center Walla Walla · Walla Walla, WA HC ASSAY OF FREE THYROXINE LAB | $16.10 | $23.00 | Apr 1, 2026 source file |
| Virginia Mason Medical Center Seattle · Seattle-Tacoma-Bellevue, WA THYROXINE FREE (FT-4) | $36.72 | $72.00 | — source file |
| PeaceHealth Peace Island Medical Center Friday Harbor · Friday Harbor, WA THYROXINE (THYROID CHEMICAL); FREE | $38.35 | $59.00 | — source file |
| Central Washington Health Services Association Wenatchee · Wenatchee-East Wenatchee, WA HC Assay of Free Thyroxine | $38.70 | $43.00 | — source file |
| Providence Centralia Hospital Centralia · Centralia, WA HC ASSAY OF FREE THYROXINE CDM | $41.60 | $80.00 | Apr 1, 2026 source file |
| Providence St Peter Hospital Olympia · Olympia-Lacey-Tumwater, WA HC ASSAY OF FREE THYROXINE LAB | $41.60 | $80.00 | Apr 1, 2026 source file |
| Saint Clare Hospital Lakewood · Seattle-Tacoma-Bellevue, WA HC FREE T4 REFLEX | $46.33 | $160.71 | Feb 28, 2026 source file |
| St Anthony Hospital Gig Harbor · Seattle-Tacoma-Bellevue, WA HC FREE T4 REFLEX | $48.88 | $160.71 | Feb 28, 2026 source file |
| Providence Holy Family Hospital Spokane · Spokane-Spokane Valley, WA HC ASSAY OF FREE THYROXINE LAB | $49.00 | $70.00 | Apr 1, 2026 source file |
| Highline Medical Center Burien · Seattle-Tacoma-Bellevue, WA HC FREE T4 REFLEX | $49.08 | $160.71 | Feb 28, 2026 source file |
| St Francis Community Hospital Federal Way · Seattle-Tacoma-Bellevue, WA HC FREE T4 REFLEX | $50.44 | $160.71 | Feb 28, 2026 source file |
| St Joseph Medical Center Tacoma · Seattle-Tacoma-Bellevue, WA HC FREE T4 REFLEX | $53.23 | $160.71 | Feb 28, 2026 source file |
| Enumclaw Regional Hospital Association Enumclaw · Seattle-Tacoma-Bellevue, WA HC FREE T4 REFLEX | $56.79 | $160.71 | Feb 28, 2026 source file |
| PeaceHealth United General Medical Center Sedro Woolley · Mount Vernon-Anacortes, WA THYROXINE (THYROID CHEMICAL); FREE | $60.45 | $93.00 | — source file |
| Swedish Edmonds Edmonds · Seattle-Tacoma-Bellevue, WA HC ASSAY OF FREE THYROXINE CDM | $63.84 | $133.00 | Apr 1, 2026 source file |
| Swedish Issaquah Issaquah · Seattle-Tacoma-Bellevue, WA HC ASSAY OF FREE THYROXINE LAB | $63.84 | $133.00 | Apr 1, 2026 source file |
| Swedish Medical Center / Cherry Hill Seattle · Seattle-Tacoma-Bellevue, WA HC ASSAY OF FREE THYROXINE CDM | $63.84 | $133.00 | Apr 1, 2026 source file |
| Providence Regional Medical Center Everett Everett · Seattle-Tacoma-Bellevue, WA HC ASSAY OF FREE THYROXINE LAB | $69.16 | $133.00 | Apr 1, 2026 source file |
| Harrison Medical Center Silverdale · Bremerton-Silverdale-Port Orchard, WA HC FREE T4 REFLEX | $70.93 | $160.71 | Feb 28, 2026 source file |
| Shriners Childrens - Spokane Spokane · Spokane-Spokane Valley, WA THYROXINE (THYROID CHEMICAL); FREE | $78.30 | $78.30 | — source file |
| Kadlec Regional Medical Center Richland · Kennewick-Richland, WA HC ZT4 FREE BY EQUIL DIALYSIS(ARUP) | $78.40 | $112.00 | Apr 1, 2026 source file |
| Providence Mount Carmel Hospital Colville · Spokane-Spokane Valley, WA HC ASSAY OF FREE THYROXINE CDM | $78.40 | $112.00 | Apr 1, 2026 source file |
| Jefferson Healthcare Port Townsend · Port Townsend, WA Thyroxine (thyroid chemical), free | $88.80 | $111.00 | Aug 6, 2026 source file |
| St. Joseph Medical Center Bellingham · Bellingham, WA THYROXINE (THYROID CHEMICAL); FREE | $91.00 | $140.00 | — source file |
| Providence St Joseph Hospital Chewelah · Spokane-Spokane Valley, WA HC ASSAY OF FREE THYROXINE CDM | $91.70 | $131.00 | Apr 1, 2026 source file |
| Kaiser Permanente Central Hospital Seattle · Seattle-Tacoma-Bellevue, WA THYROXINE FREE | $92.00 | $115.00 | Apr 1, 2026 source file |
| Cascade Valley Hospital Arlington · Seattle-Tacoma-Bellevue, WA HC THYROXINE, FREE | $116.00 | $145.00 | — source file |
| PeaceHealth Southwest Medical Center Vancouver · Portland-Vancouver-Hillsboro, OR-WA THYROXINE (THYROID CHEMICAL); FREE | $117.00 | $180.00 | — source file |
| St. John Medical Center Longview · Longview-Kelso, WA THYROXINE (THYROID CHEMICAL); FREE | $120.90 | $186.00 | — source file |
| Seattle Children's Hospital Seattle · Seattle-Tacoma-Bellevue, WA T4 Free by Equilibrium Dialys | $141.60 | $141.60 | — source file |
| Skagit Valley Hospital Mount Vernon · Mount Vernon-Anacortes, WA HC THYROXINE, FREE | $156.80 | $196.00 | — source file |
By metro area
Each metro page compares every listing, including prices for both sides of the body.
| Metro area | Hospitals | Lowest | Median |
|---|---|---|---|
| Seattle-Tacoma-Bellevue, WA | 15 | $13.61 | $56.79 |
| Spokane-Spokane Valley, WA | 4 | $49.00 | $78.35 |
| Mount Vernon-Anacortes, WA | 2 | $60.45 | $108.62 |
| Portland-Vancouver-Hillsboro, OR-WA | 2 | $6.38 | $61.69 |
| Bellingham, WA | 1 | $91.00 | $91.00 |
| Bremerton-Silverdale-Port Orchard, WA | 1 | $70.93 | $70.93 |
| Centralia, WA | 1 | $41.60 | $41.60 |
| Friday Harbor, WA | 1 | $38.35 | $38.35 |
| Kennewick-Richland, WA | 1 | $78.40 | $78.40 |
| Longview-Kelso, WA | 1 | $120.90 | $120.90 |
| Olympia-Lacey-Tumwater, WA | 1 | $41.60 | $41.60 |
| Port Townsend, WA | 1 | $88.80 | $88.80 |
| Walla Walla, WA | 1 | $16.10 | $16.10 |
| Wenatchee-East Wenatchee, WA | 1 | $38.70 | $38.70 |
What it is
A free T4 test measures thyroxine that is not bound to proteins, the active form of the main thyroid hormone. It is usually ordered with or after a TSH test to check for an underactive or overactive thyroid and to adjust thyroid medicine.
What the price covers
The price usually covers the free T4 test only. The blood draw and the TSH test (84443) are billed separately.
Free T4 (free thyroxine) thyroid blood test in other states
- Alabama$74.96
- Alaska$68.40
- Arizona$17.45
- Arkansas$48.10
- California$68.12
- Colorado$49.00
- Connecticut$55.55
- Delaware$157.92
- Florida$70.60
- Georgia$137.67
- Hawaii$44.40
- Idaho$40.00
- Illinois$82.08
- Indiana$72.25
- Iowa$61.18
- Kansas$109.75
- Kentucky$113.03
- Louisiana$37.66
- Maine$55.38
- Maryland$44.06
- Massachusetts$43.62
- Michigan$37.00
- Minnesota$65.27
- Mississippi$24.48
- Missouri$87.90
- Montana$51.20
- Nebraska$63.84
- Nevada$65.41
- New Hampshire$78.53
- New Jersey$10.37
- New Mexico$125.20
- New York$48.47
- North Carolina$78.40
- North Dakota$32.13
- Ohio$40.30
- Oklahoma$61.33
- Oregon$44.25
- Pennsylvania$63.90
- Puerto Rico$18.00
- Rhode Island$72.00
- South Carolina$105.00
- South Dakota$64.80
- Tennessee$27.50
- Texas$39.51
- Utah$84.43
- Vermont$114.00
- Virginia$57.00
- West Virginia$45.75
- Wisconsin$70.85
- Wyoming$18.62
Median cash price across the state's hospitals.