Free T4 test cost in Wisconsin
In Wisconsin, 98 hospitals publish a cash price for free T4 (free thyroxine) thyroid blood test: from $13.38 to $310.04, with a median of $80.75. The lowest price is at River Falls Area Hospital (River Falls). The highest price is 23.2× the lowest.
- The median here, $80.75, is 21% above the US median of $66.50.
- That is 9.0× Medicare's 2026 national rate for the same service ($9.02).
- Wisconsin ranks 37th of 51 states by median, cheapest first.
- 4 of 98 hospitals list a cash price equal to their full list price, with no self-pay discount.
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 Nov 11, 2026. See them on a map
Lowest$13.38River Falls Area Hospital
Median$80.75half of hospitals charge less
Highest$310.04in Wisconsin
Lowest saves$67.37vs the median
Hospitals in Wisconsin, cheapest first
| Hospital | Cash price | List price | File date |
|---|---|---|---|
| River Falls Area Hospital lowest River Falls · Minneapolis-St. Paul-Bloomington, MN-WI HCHG T4FREE LCC | $13.38 | $23.90 | Jun 15, 2026 source file |
| Bellin Memorial Health Green Bay · Green Bay, WI THYROXINE; FREE (FT4) | $25.93 | $56.00 | Jun 27, 2026 source file |
| Ascension NE Wisconsin - Mercy Campus Oshkosh · Oshkosh-Neenah, WI HC ASSAY OF FREE THYROXINE | $34.20 | $60.00 | Jan 1, 2026 source file |
| Ascension NE Wisconsin - St Elizabeth Campus Appleton · Appleton, WI HC ASSAY OF FREE THYROXINE | $34.20 | $60.00 | Jan 1, 2026 source file |
| ThedaCare Regional Medical Center-Berlin Berlin · Berlin, WI ASSAY OF FREE THYROXINE | $36.74 | $65.60 | Aug 8, 2026 source file |
| ThedaCare Regional Medical Center-OSP Appleton · Appleton, WI T4, FREE | $36.74 | $65.60 | Aug 8, 2026 source file |
| ThedaCare Regional Medical Center-Appleton Appleton · Appleton, WI T4, FREE | $36.74 | $65.60 | Aug 7, 2026 source file |
| ThedaCare Regional Medical Center-Fond Du Lac Fond Du Lac · Fond du Lac, WI T4, FREE | $36.74 | $65.60 | Aug 8, 2026 source file |
| ThedaCare Regional Medical Center-Neenah Neenah · Oshkosh-Neenah, WI T4, FREE | $36.74 | $65.60 | Aug 8, 2026 source file |
| ThedaCare Regional Medical Center-New London New London · New London, WI ASSAY OF FREE THYROXINE | $36.74 | $65.60 | Aug 8, 2026 source file |
| ThedaCare Regional Medical Center-Oshkosh Oshkosh · Oshkosh-Neenah, WI ASSAY OF FREE THYROXINE | $36.74 | $65.60 | Aug 8, 2026 source file |
| ThedaCare Regional Medical Center-Shawano Shawano · Shawano, WI T4, FREE | $36.74 | $65.60 | Aug 8, 2026 source file |
| ThedaCare Regional Medical Center-Waupaca Waupaca · Waupaca, WI ASSAY OF FREE THYROXINE | $36.74 | $65.60 | Aug 8, 2026 source file |
| ThedaCare Regional Medical Center-Wild Rose Wild Rose · Wild Rose, WI ASSAY OF FREE THYROXINE | $36.74 | $65.60 | Aug 8, 2026 source file |
| Grant Regional Health Center Lancaster · Platteville, WI Thyroxine (thyroid chemical), free | $41.59 | $63.99 | Sep 18, 2026 source file |
| Memorial Hospital of Boscobel Boscobel · Platteville, WI THYROXINE; FREE (FT4) | $44.29 | $86.00 | Jun 27, 2026 source file |
| Ascension SE Wisconsin Hospital Milwaukee · Milwaukee-Waukesha, WI HC ASSAY OF FREE THYROXINE | $45.05 | $85.00 | Jan 1, 2026 source file |
| Ascension SE Wisconsin Hospital - Elmbrook Campus Brookfield · Brookfield, WI HC ASSAY OF FREE THYROXINE | $45.05 | $85.00 | Jan 1, 2026 source file |
| Ascension SE Wisconsin Hospital - Franklin Campus Franklin · Milwaukee-Waukesha, WI HC ASSAY OF FREE THYROXINE | $45.05 | $85.00 | Jan 1, 2026 source file |
| Ascension St. Francis Hospital Milwaukee · Milwaukee-Waukesha, WI HC ASSAY OF FREE THYROXINE | $45.05 | $85.00 | Jan 1, 2026 source file |
| Midwest Orthopedic Specialty Hospital Franklin · Milwaukee-Waukesha, WI HC ASSAY OF FREE THYROXINE | $45.05 | $85.00 | Jan 1, 2026 source file |
| Gundersen Tri-County Hospital & Clinics Whitehall · Whitehall, WI THYROXINE; FREE (FT4) | $46.92 | $74.00 | Jun 27, 2026 source file |
| Burnett Medical Center Grantsburg · Grantsburg, WI Thyroxine (thyroid chemical), free | $48.00 | $60.00 | Oct 2, 2026 source file |
| Gundersen St Josephs Hospital and Clinics Hillsboro · La Crosse-Onalaska, WI-MN THYROXINE; FREE (FT4) | $49.97 | $95.00 | Jun 27, 2026 source file |
| Ascension Calumet Hospital Chilton · Appleton, WI HC ASSAY OF FREE THYROXINE | $50.16 | $88.00 | Jan 1, 2026 source file |
| Gundersen Moundview Hospital and Clinics Friendship · Friendship, WI THYROXINE; FREE (FT4) | $51.31 | $101.00 | Jun 27, 2026 source file |
| St Nicholas Hospital of the Hospital Sisters of the Third Order of St Francis Sheboygan · Sheboygan, WI ASSAY OF FREE THYROXINE | $54.12 | $82.00 | Mar 24, 2026 source file |
| St Vincent Hospital of the Hospital Sisters of the Third Order of St Francis Green Bay · Green Bay, WI ASSAY OF FREE THYROXINE | $54.12 | $82.00 | Mar 24, 2026 source file |
| St Clare Memorial Hospital Oconto Falls · Green Bay, WI HC T4 FREE DIRECT DIALYSIS | $54.12 | $82.00 | Mar 24, 2026 source file |
| St Marys Hospital Medical Center Green Bay · Green Bay, WI ASSAY OF FREE THYROXINE | $54.12 | $82.00 | Mar 24, 2026 source file |
| Aspirus Divine Savior Hospital Portage · Madison, WI Fac Assay of Free Thyroxine | $70.85 | $109.00 | Apr 1, 2026 source file |
| Aspirus Eagle River Hospital Eagle River · Eagle River, WI Fac Assay of Free Thyroxine | $70.85 | $109.00 | Apr 1, 2026 source file |
| Aspirus Langlade Hospital Antigo · Antigo, WI Fac Assay of Free Thyroxine | $70.85 | $109.00 | Apr 1, 2026 source file |
| Aspirus Medford Hospital Medford · Medford, WI Fac Assay of Free Thyroxine | $70.85 | $109.00 | Apr 1, 2026 source file |
| Aspirus Merrill Hospital Merrill · Merrill, WI Fac Assay of Free Thyroxine | $70.85 | $109.00 | Apr 1, 2026 source file |
| Aspirus Plover Hospital Stevens Point · Stevens Point-Plover, WI Fac Assay of Free Thyroxine | $70.85 | $109.00 | Apr 1, 2026 source file |
| Aspirus Rhinelander Hospital Rhinelander · Rhinelander, WI Fac Assay of Free Thyroxine | $70.85 | $109.00 | Apr 1, 2026 source file |
| Aspirus Stanley Hospital Stanley · Eau Claire, WI Fac Assay of Free Thyroxine | $70.85 | $109.00 | Apr 1, 2026 source file |
| Aspirus Stevens Point Hospital Stevens Point · Stevens Point-Plover, WI Fac Assay of Free Thyroxine | $70.85 | $109.00 | Apr 1, 2026 source file |
| Aspirus Tomahawk Hospital Tomahawk · Tomahawk, WI Fac Assay of Free Thyroxine | $70.85 | $109.00 | Apr 1, 2026 source file |
| Aspirus Wausau Hospital Wausau · Wausau, WI Fac Assay of Free Thyroxine | $70.85 | $109.00 | Apr 1, 2026 source file |
| Aspirus Wisconsin Rapids Hospital Wisconsin Rapids · Wisconsin Rapids-Marshfield, WI Fac Assay of Free Thyroxine | $70.85 | $109.00 | Apr 1, 2026 source file |
| Howard Young Medical Center Woodruff · Woodruff, WI Fac Assay of Free Thyroxine | $70.85 | $109.00 | Apr 1, 2026 source file |
| Westfields Hospital New Richmond · Minneapolis-St. Paul-Bloomington, MN-WI Chemistry | $72.06 | $137.00 | Mar 31, 2026 source file |
| Childrens Hospital of Wisconsin Fox Valley Neenah · Oshkosh-Neenah, WI HBC FV T4 FREE | $73.70 | $134.00 | Mar 24, 2026 source file |
| Essentia Health St Marys Hospital-Superior Superior · Duluth, MN-WI THYROXIN, FREE (FREE T4) | $80.55 | $109.00 | Jan 1, 2026 source file |
| Tomah Memorial Hospital Tomah · Sparta, WI Thyroxine (thyroid chemical), free | $80.64 | $140.25 | Oct 28, 2026 source file |
| Marshfield Medical Center - Eau Claire Eau Claire · Eau Claire, WI THYROXINE FREE ASSAY-TECH | $80.75 | $85.00 | Feb 20, 2026 source file |
| Marshfield Medical Center - Ladysmith Ladysmith · Ladysmith, WI THYROXINE FREE ASSAY-TECH | $80.75 | $85.00 | Feb 20, 2026 source file |
| Marshfield Medical Center - Minocqua Minocqua · Minocqua, WI THYROXINE FREE ASSAY-TECH | $80.75 | $85.00 | Feb 20, 2026 source file |
| Marshfield Medical Center - Neillsville Neillsville · Neillsville, WI THYROXINE FREE ASSAY-TECH | $80.75 | $85.00 | Feb 20, 2026 source file |
| Marshfield Medical Center - Park Falls Park Falls · Park Falls, WI THYROXINE FREE ASSAY-TECH | $80.75 | $85.00 | Feb 20, 2026 source file |
| Marshfield Medical Center - Rice Lake Rice Lake · Rice Lake, WI THYROXINE FREE ASSAY-TECH | $80.75 | $85.00 | Feb 20, 2026 source file |
| Marshfield Medical Center - River Region at Stevens Point Stevens Point · Stevens Point-Plover, WI THYROXINE FREE ASSAY-TECH | $80.75 | $85.00 | Feb 20, 2026 source file |
| Marshfield Medical Center - Weston Weston · Wausau, WI THYROXINE FREE ASSAY-TECH | $80.75 | $85.00 | Feb 20, 2026 source file |
| Southwest Health Center Platteville · Platteville, WI LCHG T4 FREE DIRECT DIALYSIS | $84.75 | $113.00 | Mar 27, 2026 source file |
| Orthopaedic Hospital of Wisconsin Glendale · Milwaukee-Waukesha, WI T-4 FREE | $88.51 | $167.00 | Jan 1, 2026 source file |
| Beloit Memorial Hospital Beloit · Janesville-Beloit, WI Thyroxine Free | $88.80 | $296.00 | Oct 12, 2026 source file |
| Hudson Hospital Hudson · Minneapolis-St. Paul-Bloomington, MN-WI Chemistry | $89.77 | $199.00 | Mar 31, 2026 source file |
| Ascension Columbia St. Mary's Hospital - Milwaukee Campus Milwaukee · Milwaukee-Waukesha, WI HC ASSAY OF FREE THYROXINE | $91.69 | $173.00 | Jan 1, 2026 source file |
| Ascension Columbia St. Mary's Hospital - Ozaukee Campus Mequon · Milwaukee-Waukesha, WI HC ASSAY OF FREE THYROXINE | $91.69 | $173.00 | Jan 1, 2026 source file |
| Aurora BayCare Medical Center Green Bay · Green Bay, WI T4, FREE | $92.50 | $185.00 | Nov 4, 2026 source file |
| Aurora Lakeland Medical Center Elkhorn · Whitewater-Elkhorn, WI T4, FREE | $92.50 | $185.00 | Nov 4, 2026 source file |
| Aurora Medical Center Bay Area Marinette · Marinette, WI-MI T4, FREE | $92.50 | $185.00 | Nov 4, 2026 source file |
| Aurora Medical Center Burlington Burlington · Racine-Mount Pleasant, WI T4, FREE | $92.50 | $185.00 | Nov 6, 2026 source file |
| Aurora Medical Center Fond du Lac Fond Du Lac · Fond du Lac, WI T4, FREE | $92.50 | $185.00 | Nov 5, 2026 source file |
| Aurora Medical Center Grafton Grafton · Milwaukee-Waukesha, WI T4, FREE | $92.50 | $185.00 | Nov 4, 2026 source file |
| Aurora Medical Center Kenosha Kenosha · Milwaukee-Waukesha, WI T4, FREE | $92.50 | $185.00 | Nov 6, 2026 source file |
| Aurora Medical Center Manitowoc Two Rivers · Manitowoc, WI T4, FREE | $92.50 | $185.00 | Nov 4, 2026 source file |
| Aurora Medical Center Mount Pleasant Mount Pleasant · Racine-Mount Pleasant, WI T4, FREE | $92.50 | $185.00 | Nov 4, 2026 source file |
| Aurora Medical Center Oshkosh Oshkosh · Oshkosh-Neenah, WI T4, FREE | $92.50 | $185.00 | Nov 4, 2026 source file |
| Aurora Medical Center Sheboygan County Sheboygan · Sheboygan, WI T4, FREE | $92.50 | $185.00 | Nov 4, 2026 source file |
| Aurora Medical Center Summit Summit · Milwaukee-Waukesha, WI T4, FREE | $92.50 | $185.00 | Nov 5, 2026 source file |
| Aurora Medical Center Washington County Hartford · Milwaukee-Waukesha, WI T4, FREE | $92.50 | $185.00 | Nov 5, 2026 source file |
| Aurora St Lukes Medical Center Milwaukee · Milwaukee-Waukesha, WI T4, FREE | $92.50 | $185.00 | Nov 5, 2026 source file |
| Aurora St Lukes Medical Center of Aurora Health Care Metro Milwaukee · Milwaukee-Waukesha, WI T4, FREE | $92.50 | $185.00 | Nov 5, 2026 source file |
| Aurora St. Luke's South Shore of Aurora Health Care Metro Cudahy · Milwaukee-Waukesha, WI T4, FREE | $92.50 | $185.00 | Nov 6, 2026 source file |
| Aurora West Allis Medical Center West Allis · Milwaukee-Waukesha, WI T4, FREE | $92.50 | $185.00 | Nov 6, 2026 source file |
| Children's Hospital of Wisconsin Milwaukee · Milwaukee-Waukesha, WI HBC FREE T4 | $101.34 | $184.25 | Mar 23, 2026 source file |
| Sauk Prairie Healthcare Prairie Du Sac · Baraboo, WI FREE T4 | $107.22 | $196.00 | Jan 29, 2026 source file |
| Stoughton Hospital Stoughton · Madison, WI Thyroxine (thyroid chemical), free | $113.30 | $206.00 | Jun 11, 2026 source file |
| Amery Hospital East Amery · East Amery, WI Chemistry | $114.71 | $220.00 | Mar 31, 2026 source file |
| UnityPoint Health - Meriter Madison · Madison, WI HC FREE THYROXINE | $121.18 | $151.47 | Jan 28, 2026 source file |
| OakLeaf Surgical Hospital Altoona · Eau Claire, WI THYROXINE (THYROID CHEMICAL); FREE | $124.04 | $137.82 | Feb 19, 2026 source file |
| Mercyhealth Hospital & Medical Center - Walworth Lake Geneva · Whitewater-Elkhorn, WI CHG ASSAY OF FREE THYROXINE | $137.74 | $183.66 | Mar 1, 2026 source file |
| Marshfield Medical Center - Beaver Dam Beaver Dam · Beaver Dam, WI THYROXINE FREE ASSAY-TECH | $140.60 | $148.00 | Feb 20, 2026 source file |
| Black River Memorial Hospital Black River Falls · Black River Falls, WI Assay of free thyroxine | $146.70 | $163.00 | Jan 8, 2026 source file |
| Marshfield Medical Center - Marshfield Marshfield · Wisconsin Rapids-Marshfield, WI THYROXINE FREE ASSAY-TECH | $147.25 | $155.00 | Feb 20, 2026 source file |
| Tamarack Health Hayward Medical Center Hayward · Hayward, WI Thyroxin, Free (Free T4) | $148.91 | $156.75 | Jan 26, 2026 source file |
| Mercyhealth Hospital & Trauma Center Janesville · Janesville-Beloit, WI CHG ASSAY OF FREE THYROXINE | $149.63 | $199.51 | Mar 1, 2026 source file |
| Crossing Rivers Health Medical Center Prairie Du Chien · Prairie Du Chien, WI Thyroxine (thyroid chemical), free | $166.00 | $166.00 | Oct 22, 2026 source file |
| Cumberland Memorial Hospital Cumberland · Rice Lake, WI FREE T4 | $170.15 | $170.15 | Apr 16, 2026 source file |
| Vernon Memorial Healthcare Viroqua · La Crosse-Onalaska, WI-MN THYROXINE; FREE (FT4) | $199.00 | $199.00 | Nov 21, 2025 source file |
| Edgerton Hospital and Health Services Edgerton · Janesville-Beloit, WI LCHG T4 FREE | $215.35 | $295.00 | Jul 19, 2026 source file |
| Spooner Health System Spooner · Spooner, WI ASSAY OF FREE THYROXINE - REF | $218.70 | $243.00 | Jul 20, 2026 source file |
| Froedtert Pleasant Prairie Hospital Pleasant Prairie · Kenosha, WI Lab - Thyroxine Level (Free) | $222.55 | $296.74 | Jul 1, 2026 source file |
| AdventHealth Durand Durand · Durand, WI HC T4 FREE - THYROXINE FREE | $251.77 | $251.77 | Apr 1, 2026 source file |
| Tamarack Health Ashland Medical Center Ashland · Ashland, WI Thyroxin, Free (Free T4) | $310.04 | $326.36 | Jan 26, 2026 source file |
Hospital The hospital that published the price, its city and the line exactly as written in its price file.
Cash price The hospital's own price for a patient paying without insurance (“discounted cash” in its price file). Hospitals must publish it under federal law, 45 CFR 180.50. Call to confirm it before booking. More
List price The hospital's full chargemaster price (“gross charge”) before any discount. Almost nobody pays it; the gap to the cash price shows what the self-pay discount is worth. More
File date When the hospital last updated its price file, as the file says itself. A dash means the file gives no date.
No cash discount This line's cash price equals the hospital's full list price. Many hospitals still reduce bills for uninsured patients: ask the billing office for its self-pay discount in writing. More
By metro area
Each metro page compares every listing, including prices for both sides of the body.
| Metro area | Hospitals | Lowest | Median |
|---|---|---|---|
| Milwaukee-Waukesha, WI | 16 | $45.05 | $92.50 |
| Green Bay, WI | 5 | $25.93 | $54.12 |
| Oshkosh-Neenah, WI | 5 | $34.20 | $36.74 |
| Appleton, WI | 4 | $34.20 | $36.74 |
| Eau Claire, WI | 3 | $70.85 | $80.75 |
| Janesville-Beloit, WI | 3 | $88.80 | $149.63 |
| Madison, WI | 3 | $70.85 | $113.30 |
| Minneapolis-St. Paul-Bloomington, MN-WI | 3 | $13.38 | $72.06 |
| Platteville, WI | 3 | $41.59 | $44.29 |
| Stevens Point-Plover, WI | 3 | $70.85 | $70.85 |
| Fond du Lac, WI | 2 | $36.74 | $64.62 |
| La Crosse-Onalaska, WI-MN | 2 | $49.97 | $124.48 |
| Racine-Mount Pleasant, WI | 2 | $92.50 | $92.50 |
| Rice Lake, WI | 2 | $80.75 | $125.45 |
| Sheboygan, WI | 2 | $54.12 | $73.31 |
| Wausau, WI | 2 | $70.85 | $75.80 |
| Whitewater-Elkhorn, WI | 2 | $92.50 | $115.12 |
| Wisconsin Rapids-Marshfield, WI | 2 | $70.85 | $109.05 |
| Antigo, WI | 1 | $70.85 | $70.85 |
| Ashland, WI | 1 | $310.04 | $310.04 |
| Berlin, WI | 1 | $36.74 | $36.74 |
| Black River Falls, WI | 1 | $146.70 | $146.70 |
| Brookfield, WI | 1 | $45.05 | $45.05 |
| Baraboo, WI | 1 | $107.22 | $107.22 |
| Beaver Dam, WI | 1 | $140.60 | $140.60 |
| Durand, WI | 1 | $251.77 | $251.77 |
| Duluth, MN-WI | 1 | $80.55 | $80.55 |
| Eagle River, WI | 1 | $70.85 | $70.85 |
| East Amery, WI | 1 | $114.71 | $114.71 |
| Friendship, WI | 1 | $51.31 | $51.31 |
| Grantsburg, WI | 1 | $48.00 | $48.00 |
| Hayward, WI | 1 | $148.91 | $148.91 |
| Kenosha, WI | 1 | $222.55 | $222.55 |
| Ladysmith, WI | 1 | $80.75 | $80.75 |
| Medford, WI | 1 | $70.85 | $70.85 |
| Merrill, WI | 1 | $70.85 | $70.85 |
| Minocqua, WI | 1 | $80.75 | $80.75 |
| Manitowoc, WI | 1 | $92.50 | $92.50 |
| Marinette, WI-MI | 1 | $92.50 | $92.50 |
| Neillsville, WI | 1 | $80.75 | $80.75 |
| New London, WI | 1 | $36.74 | $36.74 |
| Park Falls, WI | 1 | $80.75 | $80.75 |
| Prairie Du Chien, WI | 1 | $166.00 | $166.00 |
| Rhinelander, WI | 1 | $70.85 | $70.85 |
| Spooner, WI | 1 | $218.70 | $218.70 |
| Shawano, WI | 1 | $36.74 | $36.74 |
| Sparta, WI | 1 | $80.64 | $80.64 |
| Tomahawk, WI | 1 | $70.85 | $70.85 |
| Waupaca, WI | 1 | $36.74 | $36.74 |
| Whitehall, WI | 1 | $46.92 | $46.92 |
| Wild Rose, WI | 1 | $36.74 | $36.74 |
| Woodruff, WI | 1 | $70.85 | $70.85 |
Market A metro area (as the Census Bureau defines it) or, outside metro areas, a town. Each links to every hospital price there.
Hospitals How many hospitals publish a cash price for this code here. Each hospital counts once, at its lowest outpatient cash price.
Lowest The lowest cash price among those hospitals.
Median The middle cash price: half of the hospitals charge less, half charge more. One price per hospital. More
What free T4 test is, what the price covers and why prices differ: Free T4 test explained.
Free T4 (free thyroxine) thyroid blood test in other states
- Alabama$60.96
- Alaska$137.40
- Arizona$53.86
- Arkansas$32.00
- California$68.12
- Colorado$104.02
- Connecticut$61.70
- Delaware$157.92
- District of Columbia$102.57, 3 hospitals
- Florida$84.03
- Georgia$75.49
- Hawaii$79.10
- Idaho$49.00
- Illinois$115.77
- Indiana$81.00
- Iowa$65.60
- Kansas$62.42
- Kentucky$74.62
- Louisiana$34.97
- Maine$57.72
- Maryland$43.12
- Massachusetts$66.00
- Michigan$31.00
- Minnesota$69.26
- Mississippi$35.42
- Missouri$77.18
- Montana$75.33
- Nebraska$90.88
- Nevada$101.04
- New Hampshire$98.25
- New Jersey$10.37
- New Mexico$123.20
- New York$48.00
- North Carolina$64.50
- North Dakota$62.63
- Ohio$42.49
- Oklahoma$61.33
- Oregon$45.75
- Pennsylvania$60.00
- Puerto Rico$44.50
- Rhode Island$72.00
- South Carolina$100.80
- South Dakota$95.00
- Tennessee$33.64
- Texas$76.83
- Utah$151.86
- Vermont$102.14
- Virginia$77.50
- Washington$69.16
- West Virginia$58.00
- Wyoming$77.28
Median cash price across the state's hospitals.