Potassium test cost in Wisconsin
In Wisconsin, 96 hospitals publish a cash price for potassium blood test: from $10.43 to $199.17, with a median of $28.27. The lowest price is at Amery Hospital (East Amery). The highest price is 19.1× the lowest.
Outpatient cash prices, one line per hospital — its lowest listed price for code 84132. Prices for both sides of the body and inpatient prices are not mixed in. Collected Oct 2, 2026. See them on a map
Lowest$10.43Amery Hospital
Median$28.27half of hospitals charge less
Highest$199.17in Wisconsin
Lowest saves$17.84vs the median
Hospitals in Wisconsin, cheapest first
| Hospital | Cash price | List price | File date |
|---|---|---|---|
| Amery Hospital lowest East Amery · East Amery, WI Chemistry | $10.43 | $20.00 | — source file |
| Ascension NE Wisconsin - Mercy Campus Oshkosh · Oshkosh-Neenah, WI HC ASSAY OF SERUM POTASSIUM | $11.97 | $21.00 | — source file |
| Ascension NE Wisconsin - St Elizabeth Campus Appleton · Appleton, WI HC ASSAY OF SERUM POTASSIUM | $11.97 | $21.00 | — source file |
| Bellin Memorial Health Green Bay · Green Bay, WI POTASSIUM; SERUM, PLASMA OR WHOLE BLOOD | $13.89 | $30.00 | Jun 27, 2026 source file |
| River Falls Area Hospital River Falls · Minneapolis-St. Paul-Bloomington, MN-WI HCHG POTASSIUM QUEST | $15.96 | $28.50 | Jun 15, 2026 source file |
| Ascension Columbia St. Mary's Hospital - Ozaukee Campus Mequon · Milwaukee-Waukesha, WI HC ASSAY OF SERUM POTASSIUM - POC | $16.43 | $31.00 | — source file |
| Ascension Calumet Hospital Chilton · Appleton, WI HC ASSAY OF SERUM POTASSIUM - POC | $17.67 | $31.00 | — source file |
| ThedaCare Regional Medical Center-Berlin Berlin · Berlin, WI POTASSIUM, SERUM | $18.76 | $33.50 | — source file |
| ThedaCare Regional Medical Center-OSP Appleton · Appleton, WI POTASSIUM, SERUM | $18.76 | $33.50 | — source file |
| ThedaCare Regional Medical Center-Appleton Appleton · Appleton, WI POTASSIUM, SERUM | $18.76 | $33.50 | — source file |
| ThedaCare Regional Medical Center-Fond Du Lac Fond Du Lac · Fond du Lac, WI POTASSIUM, SERUM | $18.76 | $33.50 | — source file |
| ThedaCare Regional Medical Center-Neenah Neenah · Oshkosh-Neenah, WI POTASSIUM, SERUM | $18.76 | $33.50 | — source file |
| ThedaCare Regional Medical Center-New London New London · New London, WI POTASSIUM, SERUM | $18.76 | $33.50 | — source file |
| ThedaCare Regional Medical Center-Oshkosh Oshkosh · Oshkosh-Neenah, WI POTASSIUM, SERUM | $18.76 | $33.50 | — source file |
| ThedaCare Regional Medical Center-Shawano Shawano · Shawano, WI POTASSIUM, SERUM | $18.76 | $33.50 | — source file |
| ThedaCare Regional Medical Center-Waupaca Waupaca · Waupaca, WI POTASSIUM, SERUM | $18.76 | $33.50 | — source file |
| ThedaCare Regional Medical Center-Wild Rose Wild Rose · Wild Rose, WI POTASSIUM, SERUM | $18.76 | $33.50 | — source file |
| Childrens Hospital of Wisconsin Fox Valley Neenah · Oshkosh-Neenah, WI HBC FV POTASSIUM SERUM | $19.66 | $35.75 | Mar 24, 2026 source file |
| Grant Regional Health Center Lancaster · Platteville, WI Blood potassium level | $20.07 | $30.87 | Sep 18, 2026 source file |
| Hudson Hospital Hudson · Minneapolis-St. Paul-Bloomington, MN-WI Blood Gas/Lytes Ven | $21.65 | $48.00 | — source file |
| Memorial Hospital of Boscobel Boscobel · Platteville, WI POTASSIUM; SERUM, PLASMA OR WHOLE BLOOD | $23.18 | $45.00 | Jun 27, 2026 source file |
| Ascension SE Wisconsin Hospital Milwaukee · Milwaukee-Waukesha, WI HC ASSAY OF SERUM POTASSIUM - POC | $23.32 | $44.00 | — source file |
| Ascension SE Wisconsin Hospital - Elmbrook Campus Brookfield · Brookfield, WI HC ASSAY OF SERUM POTASSIUM | $23.32 | $44.00 | — source file |
| Ascension SE Wisconsin Hospital - Franklin Campus Franklin · Milwaukee-Waukesha, WI HC ASSAY OF SERUM POTASSIUM - POC | $23.32 | $44.00 | — source file |
| Ascension St. Francis Hospital Milwaukee · Milwaukee-Waukesha, WI HC ASSAY OF SERUM POTASSIUM - POC | $23.32 | $44.00 | — source file |
| Midwest Orthopedic Specialty Hospital Franklin · Milwaukee-Waukesha, WI HC ASSAY OF SERUM POTASSIUM - POC | $23.32 | $44.00 | — source file |
| Gundersen Tri-County Hospital & Clinics Whitehall · Whitehall, WI POTASSIUM; SERUM, PLASMA OR WHOLE BLOOD | $24.73 | $39.00 | Jun 27, 2026 source file |
| Westfields Hospital New Richmond · Minneapolis-St. Paul-Bloomington, MN-WI Blood Gas/Lytes Ven | $25.25 | $48.00 | — source file |
| Gundersen St Josephs Hospital and Clinics Hillsboro · La Crosse-Onalaska, WI-MN POTASSIUM; SERUM, PLASMA OR WHOLE BLOOD | $26.30 | $50.00 | Jun 27, 2026 source file |
| Orthopaedic Hospital of Wisconsin Glendale · Milwaukee-Waukesha, WI POTASSIUM BLOOD POC | $27.03 | $51.00 | — source file |
| Gundersen Moundview Hospital and Clinics Friendship · Friendship, WI POTASSIUM; SERUM, PLASMA OR WHOLE BLOOD | $27.43 | $54.00 | Jun 27, 2026 source file |
| Aurora BayCare Medical Center Green Bay · Green Bay, WI POC POTASSIUM SERUM | $27.50 | $55.00 | Nov 21, 2025 source file |
| Aurora Lakeland Medical Center Elkhorn · Whitewater-Elkhorn, WI POC POTASSIUM SERUM | $27.50 | $55.00 | Nov 21, 2025 source file |
| Aurora Medical Center Bay Area Marinette · Marinette, WI-MI POC POTASSIUM SERUM | $27.50 | $55.00 | Nov 21, 2025 source file |
| Aurora Medical Center Burlington Burlington · Racine-Mount Pleasant, WI POC POTASSIUM SERUM | $27.50 | $55.00 | Nov 21, 2025 source file |
| Aurora Medical Center Fond du Lac Fond Du Lac · Fond du Lac, WI POC POTASSIUM SERUM | $27.50 | $55.00 | Nov 21, 2025 source file |
| Aurora Medical Center Grafton Grafton · Milwaukee-Waukesha, WI POC POTASSIUM SERUM | $27.50 | $55.00 | Nov 21, 2025 source file |
| Aurora Medical Center Kenosha Kenosha · Milwaukee-Waukesha, WI POC POTASSIUM SERUM | $27.50 | $55.00 | Nov 21, 2025 source file |
| Aurora Medical Center Manitowoc Two Rivers · Manitowoc, WI POC POTASSIUM SERUM | $27.50 | $55.00 | Nov 21, 2025 source file |
| Aurora Medical Center Mount Pleasant Mount Pleasant · Racine-Mount Pleasant, WI POC POTASSIUM SERUM | $27.50 | $55.00 | Nov 21, 2025 source file |
| Aurora Medical Center Oshkosh Oshkosh · Oshkosh-Neenah, WI POC POTASSIUM SERUM | $27.50 | $55.00 | Nov 21, 2025 source file |
| Aurora Medical Center Sheboygan County Sheboygan · Sheboygan, WI POC POTASSIUM SERUM | $27.50 | $55.00 | Nov 21, 2025 source file |
| Aurora Medical Center Summit Summit · Milwaukee-Waukesha, WI POC POTASSIUM SERUM | $27.50 | $55.00 | Nov 21, 2025 source file |
| Aurora Medical Center Washington County Hartford · Milwaukee-Waukesha, WI POC POTASSIUM SERUM | $27.50 | $55.00 | Nov 21, 2025 source file |
| Aurora St Lukes Medical Center Milwaukee · Milwaukee-Waukesha, WI POC POTASSIUM SERUM | $27.50 | $55.00 | Nov 21, 2025 source file |
| Aurora St Lukes Medical Center of Aurora Health Care Metro Milwaukee · Milwaukee-Waukesha, WI POC POTASSIUM SERUM | $27.50 | $55.00 | Nov 21, 2025 source file |
| Aurora St. Luke's South Shore of Aurora Health Care Metro Cudahy · Milwaukee-Waukesha, WI POC POTASSIUM SERUM | $27.50 | $55.00 | Nov 21, 2025 source file |
| Aurora West Allis Medical Center West Allis · Milwaukee-Waukesha, WI POC POTASSIUM SERUM | $27.50 | $55.00 | Nov 21, 2025 source file |
| St Nicholas Hospital of the Hospital Sisters of the Third Order of St Francis Sheboygan · Sheboygan, WI ASSAY OF SERUM POTASSIUM | $29.04 | $44.00 | — source file |
| St Vincent Hospital of the Hospital Sisters of the Third Order of St Francis Green Bay · Green Bay, WI ASSAY OF SERUM POTASSIUM | $29.04 | $44.00 | — source file |
| St Clare Memorial Hospital Oconto Falls · Green Bay, WI HC POTASSIUM | $29.04 | $44.00 | — source file |
| St Marys Hospital Medical Center Green Bay · Green Bay, WI ASSAY OF SERUM POTASSIUM | $29.04 | $44.00 | — source file |
| Ascension Columbia St. Mary's Hospital - Milwaukee Campus Milwaukee · Milwaukee-Waukesha, WI HC ASSAY OF SERUM POTASSIUM | $37.63 | $71.00 | — source file |
| Aspirus Divine Savior Hospital Portage · Madison, WI Fac Assay of Serum Potassium | $43.55 | $67.00 | Apr 1, 2026 source file |
| Aspirus Eagle River Hospital Eagle River · Eagle River, WI Fac Assay of Serum Potassium | $43.55 | $67.00 | Apr 1, 2026 source file |
| Aspirus Langlade Hospital Antigo · Antigo, WI Fac Assay of Serum Potassium | $43.55 | $67.00 | Apr 1, 2026 source file |
| Aspirus Medford Hospital Medford · Medford, WI Fac Assay of Serum Potassium | $43.55 | $67.00 | Apr 1, 2026 source file |
| Aspirus Merrill Hospital Merrill · Merrill, WI Fac Assay of Serum Potassium | $43.55 | $67.00 | Apr 1, 2026 source file |
| Aspirus Plover Hospital Stevens Point · Stevens Point-Plover, WI Fac Assay of Serum Potassium | $43.55 | $67.00 | Apr 1, 2026 source file |
| Aspirus Rhinelander Hospital Rhinelander · Rhinelander, WI Fac Assay of Serum Potassium | $43.55 | $67.00 | Apr 1, 2026 source file |
| Aspirus Stanley Hospital Stanley · Eau Claire, WI Fac Assay of Serum Potassium | $43.55 | $67.00 | Apr 1, 2026 source file |
| Aspirus Stevens Point Hospital Stevens Point · Stevens Point-Plover, WI Fac Assay of Serum Potassium | $43.55 | $67.00 | Apr 1, 2026 source file |
| Aspirus Tomahawk Hospital Tomahawk · Tomahawk, WI Fac Assay of Serum Potassium | $43.55 | $67.00 | Apr 1, 2026 source file |
| Aspirus Wausau Hospital Wausau · Wausau, WI Fac Assay of Serum Potassium | $43.55 | $67.00 | Apr 1, 2026 source file |
| Aspirus Wisconsin Rapids Hospital Wisconsin Rapids · Wisconsin Rapids-Marshfield, WI Fac Assay of Serum Potassium | $43.55 | $67.00 | Apr 1, 2026 source file |
| Howard Young Medical Center Woodruff · Woodruff, WI Fac Assay of Serum Potassium | $43.55 | $67.00 | Apr 1, 2026 source file |
| Marshfield Medical Center - Eau Claire Eau Claire · Eau Claire, WI POTASSIUM SERUM ASSAY-TECH | $43.70 | $46.00 | Feb 20, 2026 source file |
| Marshfield Medical Center - Ladysmith Ladysmith · Ladysmith, WI POTASSIUM SERUM ASSAY-TECH | $43.70 | $46.00 | Feb 20, 2026 source file |
| Marshfield Medical Center - Minocqua Minocqua · Minocqua, WI POTASSIUM SERUM ASSAY-TECH | $43.70 | $46.00 | Feb 20, 2026 source file |
| Marshfield Medical Center - Neillsville Neillsville · Neillsville, WI POTASSIUM SERUM ASSAY-TECH | $43.70 | $46.00 | Feb 20, 2026 source file |
| Marshfield Medical Center - Park Falls Park Falls · Park Falls, WI POTASSIUM SERUM ASSAY-TECH | $43.70 | $46.00 | Feb 20, 2026 source file |
| Marshfield Medical Center - Rice Lake Rice Lake · Rice Lake, WI POTASSIUM SERUM ASSAY-TECH | $43.70 | $46.00 | Feb 20, 2026 source file |
| Marshfield Medical Center - River Region at Stevens Point Stevens Point · Stevens Point-Plover, WI POTASSIUM SERUM ASSAY-TECH | $43.70 | $46.00 | Feb 20, 2026 source file |
| Marshfield Medical Center - Weston Weston · Wausau, WI POTASSIUM SERUM ASSAY-TECH | $43.70 | $46.00 | Feb 20, 2026 source file |
| OakLeaf Surgical Hospital Altoona · Eau Claire, WI BLOOD POTASSIUM LEVEL | $44.00 | $48.89 | — source file |
| Marshfield Medical Center - Marshfield Marshfield · Wisconsin Rapids-Marshfield, WI POTASSIUM SERUM ASSAY-TECH | $44.65 | $47.00 | Feb 20, 2026 source file |
| Stoughton Hospital Stoughton · Madison, WI Blood potassium level | $46.75 | $85.00 | Jun 11, 2026 source file |
| Tomah Memorial Hospital Tomah · Sparta, WI Blood potassium level | $47.15 | $82.00 | Jun 30, 2026 source file |
| Froedtert Pleasant Prairie Hospital Pleasant Prairie · Kenosha, WI Potassium K Blood | $50.47 | $67.29 | — source file |
| Southwest Health Center Platteville · Platteville, WI LCHG POTASSIUM BLOOD | $51.00 | $68.00 | Mar 27, 2026 source file |
| Children's Hospital of Wisconsin Milwaukee · Milwaukee-Waukesha, WI HBC SURGERY K BAG BLOOD | $53.49 | $97.25 | Mar 23, 2026 source file |
| Mercyhealth Hospital & Medical Center - Walworth Lake Geneva · Whitewater-Elkhorn, WI CHG POTASSIUM SERUM PLASMA/WHOLE BLOOD | $55.57 | $74.09 | Mar 1, 2026 source file |
| Black River Memorial Hospital Black River Falls · Black River Falls, WI Potassium Level | $58.50 | $65.00 | Jan 8, 2026 source file |
| Essentia Health St Marys Hospital-Superior Superior · Duluth, MN-WI POTASSIUM; SERUM, PLASMA OR WHOLE BLOOD | $61.34 | $83.00 | Jan 1, 2026 source file |
| Mercyhealth Hospital & Trauma Center Janesville · Janesville-Beloit, WI HC POTASSIUM | $61.75 | $82.33 | Mar 1, 2026 source file |
| UnityPoint Health - Meriter Madison · Madison, WI HC ASSAY OF SERUM POTASSIUM | $62.44 | $78.05 | Jan 28, 2026 source file |
| Edgerton Hospital and Health Services Edgerton · Janesville-Beloit, WI LCHG POTASSIUM BLOOD | $67.16 | $92.00 | — source file |
| Cumberland Memorial Hospital Cumberland · Rice Lake, WI POTASSIUM, BLOOD | $70.45 | $70.45 | — source file |
| Burnett Medical Center Grantsburg · Grantsburg, WI Blood potassium level | $72.00 | $90.00 | Oct 1, 2026 source file |
| Marshfield Medical Center - Beaver Dam Beaver Dam · Beaver Dam, WI POTASSIUM SERUM ASSAY-TECH | $72.20 | $76.00 | Feb 20, 2026 source file |
| Crossing Rivers Health Medical Center Prairie Du Chien · Prairie Du Chien, WI Blood potassium level | $91.00 | $91.00 | Jul 23, 2026 source file |
| Vernon Memorial Healthcare Viroqua · La Crosse-Onalaska, WI-MN POTASSIUM; SERUM, PLASMA OR WHOLE BLOOD | $92.00 | $92.00 | — source file |
| Tamarack Health Ashland Medical Center Ashland · Ashland, WI Potassium; Serum, Plasma or Whole Blood | $112.09 | $117.99 | — source file |
| Tamarack Health Hayward Medical Center Hayward · Hayward, WI Potassium; Serum, Plasma or Whole Blood | $121.30 | $127.68 | — source file |
| Spooner Health System Spooner · Spooner, WI POTASSIUM; SERUM, PLASMA OR WHOLE BLOOD | $133.20 | $148.00 | — source file |
| AdventHealth Durand Durand · Durand, WI HC POTASSIUM LEVEL | $199.17 | $199.17 | Apr 1, 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 | $16.43 | $27.50 |
| Green Bay, WI | 5 | $13.89 | $29.04 |
| Oshkosh-Neenah, WI | 5 | $11.97 | $18.76 |
| Appleton, WI | 4 | $11.97 | $18.22 |
| Eau Claire, WI | 3 | $43.55 | $43.70 |
| Madison, WI | 3 | $43.55 | $46.75 |
| Minneapolis-St. Paul-Bloomington, MN-WI | 3 | $15.96 | $21.65 |
| Platteville, WI | 3 | $20.07 | $23.18 |
| Stevens Point-Plover, WI | 3 | $43.55 | $43.55 |
| Fond du Lac, WI | 2 | $18.76 | $23.13 |
| Janesville-Beloit, WI | 2 | $61.75 | $64.46 |
| La Crosse-Onalaska, WI-MN | 2 | $26.30 | $59.15 |
| Racine-Mount Pleasant, WI | 2 | $27.50 | $27.50 |
| Rice Lake, WI | 2 | $43.70 | $57.08 |
| Sheboygan, WI | 2 | $27.50 | $28.27 |
| Wausau, WI | 2 | $43.55 | $43.62 |
| Whitewater-Elkhorn, WI | 2 | $27.50 | $41.54 |
| Wisconsin Rapids-Marshfield, WI | 2 | $43.55 | $44.10 |
| Antigo, WI | 1 | $43.55 | $43.55 |
| Ashland, WI | 1 | $112.09 | $112.09 |
| Berlin, WI | 1 | $18.76 | $18.76 |
| Black River Falls, WI | 1 | $58.50 | $58.50 |
| Brookfield, WI | 1 | $23.32 | $23.32 |
| Beaver Dam, WI | 1 | $72.20 | $72.20 |
| Durand, WI | 1 | $199.17 | $199.17 |
| Duluth, MN-WI | 1 | $61.34 | $61.34 |
| Eagle River, WI | 1 | $43.55 | $43.55 |
| East Amery, WI | 1 | $10.43 | $10.43 |
| Friendship, WI | 1 | $27.43 | $27.43 |
| Grantsburg, WI | 1 | $72.00 | $72.00 |
| Hayward, WI | 1 | $121.30 | $121.30 |
| Kenosha, WI | 1 | $50.47 | $50.47 |
| Ladysmith, WI | 1 | $43.70 | $43.70 |
| Medford, WI | 1 | $43.55 | $43.55 |
| Merrill, WI | 1 | $43.55 | $43.55 |
| Minocqua, WI | 1 | $43.70 | $43.70 |
| Manitowoc, WI | 1 | $27.50 | $27.50 |
| Marinette, WI-MI | 1 | $27.50 | $27.50 |
| Neillsville, WI | 1 | $43.70 | $43.70 |
| New London, WI | 1 | $18.76 | $18.76 |
| Park Falls, WI | 1 | $43.70 | $43.70 |
| Prairie Du Chien, WI | 1 | $91.00 | $91.00 |
| Rhinelander, WI | 1 | $43.55 | $43.55 |
| Spooner, WI | 1 | $133.20 | $133.20 |
| Shawano, WI | 1 | $18.76 | $18.76 |
| Sparta, WI | 1 | $47.15 | $47.15 |
| Tomahawk, WI | 1 | $43.55 | $43.55 |
| Waupaca, WI | 1 | $18.76 | $18.76 |
| Whitehall, WI | 1 | $24.73 | $24.73 |
| Wild Rose, WI | 1 | $18.76 | $18.76 |
| Woodruff, WI | 1 | $43.55 | $43.55 |
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 it is
A potassium test measures the level of potassium in the blood. Doctors check it for people on diuretics or blood pressure drugs, with kidney disease, an irregular heartbeat, or vomiting and diarrhea.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.
Potassium blood test in other states
- Alabama$26.10
- Alaska$61.50
- Arizona$28.33
- Arkansas$19.20
- California$73.26
- Colorado$69.88
- Connecticut$26.08
- Delaware$60.74
- District of Columbia$67.62
- Florida$68.45
- Georgia$32.53
- Hawaii$47.60
- Idaho$35.70
- Illinois$46.20
- Indiana$28.50
- Iowa$34.00
- Kansas$32.53
- Kentucky$46.40
- Louisiana$16.47
- Maine$25.54
- Maryland$11.58
- Massachusetts$31.00
- Michigan$22.10
- Minnesota$44.20
- Mississippi$27.00
- Missouri$40.00
- Montana$40.80
- Nebraska$47.81
- Nevada$62.00
- New Hampshire$47.59
- New Jersey$5.90
- New Mexico$53.56
- New York$20.49
- North Carolina$39.30
- North Dakota$41.00
- Ohio$23.27
- Oklahoma$32.40
- Oregon$21.75
- Pennsylvania$33.20
- Puerto Rico$15.00
- Rhode Island$29.50
- South Carolina$40.47
- South Dakota$54.90
- Tennessee$23.93
- Texas$61.65
- Utah$110.70
- Vermont$41.58
- Virginia$39.00
- Washington$40.70
- West Virginia$25.25
- Wyoming$22.80
Median cash price across the state's hospitals.