Lab tests CPT 84681 Wisconsin Outpatient

C-peptide test cost in Wisconsin

In Wisconsin, 96 hospitals publish a cash price for C-peptide blood test: from $18.81 to $478.00, with a median of $87.50. The lowest price is at Ascension NE Wisconsin - Mercy Campus (Oshkosh) and 1 other hospital. The highest price is 25.4× the lowest.

Outpatient cash prices, one line per hospital — its lowest listed price for code 84681. Prices for both sides of the body and inpatient prices are not mixed in. Collected Sep 29, 2026. See them on a map

Lowest$18.81Ascension NE Wisconsin - Mercy Campus + 1 more

Median$87.50half pay less

Highest$478.00in Wisconsin

Lowest saves$68.69vs the median

Hospitals in Wisconsin, cheapest first

Hospital	Cash price	List price	File date
Ascension NE Wisconsin - Mercy Campus lowest Oshkosh · Oshkosh-Neenah, WI HC ASSAY OF C-PEPTIDE	$18.81	$33.00	— source file
Ascension NE Wisconsin - St Elizabeth Campus lowest Appleton · Appleton, WI HC ASSAY OF C-PEPTIDE	$18.81	$33.00	— source file
Ascension Calumet Hospital Chilton · Appleton, WI HC ASSAY OF C-PEPTIDE	$27.93	$49.00	— source file
River Falls Area Hospital River Falls · Minneapolis-St. Paul-Bloomington, MN-WI HCHG C-PEPTIDE SERUM	$30.41	$54.30	Jun 15, 2026 source file
ThedaCare Regional Medical Center-Berlin Berlin · Berlin, WI C-PEPTIDE ASSAY	$40.99	$73.20	— source file
ThedaCare Regional Medical Center-OSP Appleton · Appleton, WI C-PEPTIDE ASSAY	$40.99	$73.20	— source file
ThedaCare Regional Medical Center-Appleton Appleton · Appleton, WI C-PEPTIDE ASSAY	$40.99	$73.20	— source file
ThedaCare Regional Medical Center-Fond Du Lac Fond Du Lac · Fond du Lac, WI C-PEPTIDE ASSAY	$40.99	$73.20	— source file
ThedaCare Regional Medical Center-Neenah Neenah · Oshkosh-Neenah, WI C-PEPTIDE ASSAY	$40.99	$73.20	— source file
ThedaCare Regional Medical Center-New London New London · New London, WI C-PEPTIDE ASSAY	$40.99	$73.20	— source file
ThedaCare Regional Medical Center-Oshkosh Oshkosh · Oshkosh-Neenah, WI C-PEPTIDE ASSAY	$40.99	$73.20	— source file
ThedaCare Regional Medical Center-Shawano Shawano · Shawano, WI C-PEPTIDE ASSAY	$40.99	$73.20	— source file
ThedaCare Regional Medical Center-Waupaca Waupaca · Waupaca, WI C-PEPTIDE ASSAY	$40.99	$73.20	— source file
ThedaCare Regional Medical Center-Wild Rose Wild Rose · Wild Rose, WI C-PEPTIDE ASSAY	$40.99	$73.20	— source file
Ascension Columbia St. Mary's Hospital - Milwaukee Campus Milwaukee · Milwaukee-Waukesha, WI HC ASSAY OF C-PEPTIDE	$43.46	$82.00	— source file
Ascension Columbia St. Mary's Hospital - Ozaukee Campus Mequon · Milwaukee-Waukesha, WI HC ASSAY OF C-PEPTIDE	$43.46	$82.00	— source file
Ascension Sacred Heart Rehabilitation Hospital Mequon · Milwaukee-Waukesha, WI HC ASSAY OF C-PEPTIDE	$43.46	$82.00	— source file
Bellin Memorial Health Green Bay · Green Bay, WI C-PEPTIDE	$44.91	$97.00	Jun 27, 2026 source file
Westfields Hospital New Richmond · Minneapolis-St. Paul-Bloomington, MN-WI Chemistry	$45.76	$87.00	— source file
Gundersen Lutheran Medical Center La Crosse · La Crosse-Onalaska, WI-MN C-PEPTIDE	$52.00	$130.00	Jun 27, 2026 source file
Childrens Hospital of Wisconsin Fox Valley Neenah · Oshkosh-Neenah, WI HBC FV C PEPTIDE ASSAY	$52.94	$96.25	Mar 24, 2026 source file
Ascension SE Wisconsin Hospital Milwaukee · Milwaukee-Waukesha, WI HC ASSAY OF C-PEPTIDE	$54.59	$103.00	— source file
Ascension SE Wisconsin Hospital - Elmbrook Campus Brookfield · Brookfield, WI HC ASSAY OF C-PEPTIDE	$54.59	$103.00	— source file
Ascension SE Wisconsin Hospital - Franklin Campus Franklin · Milwaukee-Waukesha, WI HC ASSAY OF C-PEPTIDE	$54.59	$103.00	— source file
Ascension St. Francis Hospital Milwaukee · Milwaukee-Waukesha, WI HC ASSAY OF C-PEPTIDE	$54.59	$103.00	— source file
Midwest Orthopedic Specialty Hospital Franklin · Milwaukee-Waukesha, WI HC ASSAY OF C-PEPTIDE	$54.59	$103.00	— source file
Stoughton Hospital Stoughton · Madison, WI C-peptide (protein) level	$57.75	$105.00	Jun 11, 2026 source file
Southwest Health Center Platteville · Platteville, WI LCHG C-PEPTIDE	$59.25	$79.00	Mar 27, 2026 source file
Tomah Memorial Hospital Tomah · Sparta, WI C-peptide (protein) level	$62.10	$108.00	Jun 30, 2026 source file
UnityPoint Health - Meriter Madison · Madison, WI HC C-PEPTIDE	$64.73	$80.91	Jan 28, 2026 source file
Amery Hospital East Amery · East Amery, WI Chemistry	$74.04	$142.00	— source file
Grant Regional Health Center Lancaster · Platteville, WI C-peptide (protein) level	$76.70	$118.00	Sep 18, 2026 source file
Vernon Memorial Healthcare Viroqua · La Crosse-Onalaska, WI-MN C-PEPTIDE	$80.00	$80.00	— source file
St Nicholas Hospital of the Hospital Sisters of the Third Order of St Francis Sheboygan · Sheboygan, WI HC C PEPTIDE	$81.18	$123.00	— source file
St Vincent Hospital of the Hospital Sisters of the Third Order of St Francis Green Bay · Green Bay, WI HC C PEPTIDE	$81.18	$123.00	— source file
St Clare Memorial Hospital Oconto Falls · Green Bay, WI HC C PEPTIDE	$81.18	$123.00	— source file
St Marys Hospital Medical Center Green Bay · Green Bay, WI HC C PEPTIDE	$81.18	$123.00	— source file
Marshfield Medical Center - Beaver Dam Beaver Dam · Beaver Dam, WI C PEPTIDE ASSAY-TECH	$81.70	$86.00	Feb 20, 2026 source file
Marshfield Medical Center - Eau Claire Eau Claire · Eau Claire, WI C PEPTIDE ASSAY-TECH	$85.50	$90.00	Feb 20, 2026 source file
Marshfield Medical Center - Ladysmith Ladysmith · Ladysmith, WI C PEPTIDE ASSAY-TECH	$85.50	$90.00	Feb 20, 2026 source file
Marshfield Medical Center - Minocqua Minocqua · Minocqua, WI C PEPTIDE ASSAY-TECH	$85.50	$90.00	Feb 20, 2026 source file
Marshfield Medical Center - Neillsville Neillsville · Neillsville, WI C PEPTIDE ASSAY-TECH	$85.50	$90.00	Feb 20, 2026 source file
Marshfield Medical Center - Park Falls Park Falls · Park Falls, WI C PEPTIDE ASSAY-TECH	$85.50	$90.00	Feb 20, 2026 source file
Marshfield Medical Center - Rice Lake Rice Lake · Rice Lake, WI C PEPTIDE ASSAY-TECH	$85.50	$90.00	Feb 20, 2026 source file
Marshfield Medical Center - River Region at Stevens Point Stevens Point · Stevens Point-Plover, WI C PEPTIDE ASSAY-TECH	$85.50	$90.00	Feb 20, 2026 source file
Marshfield Medical Center - Weston Weston · Wausau, WI C PEPTIDE ASSAY-TECH	$85.50	$90.00	Feb 20, 2026 source file
Edgerton Hospital and Health Services Edgerton · Janesville-Beloit, WI LCHG C-PEPTIDE	$86.87	$119.00	— source file
Aurora BayCare Medical Center Green Bay · Green Bay, WI C-PEPTIDE	$87.50	$175.00	Nov 21, 2025 source file
Aurora Lakeland Medical Center Elkhorn · Whitewater-Elkhorn, WI C-PEPTIDE	$87.50	$175.00	Nov 21, 2025 source file
Aurora Medical Center Bay Area Marinette · Marinette, WI-MI C-PEPTIDE	$87.50	$175.00	Nov 21, 2025 source file
Aurora Medical Center Burlington Burlington · Racine-Mount Pleasant, WI C-PEPTIDE	$87.50	$175.00	Nov 21, 2025 source file
Aurora Medical Center Fond du Lac Fond Du Lac · Fond du Lac, WI C-PEPTIDE	$87.50	$175.00	Nov 21, 2025 source file
Aurora Medical Center Grafton Grafton · Milwaukee-Waukesha, WI C-PEPTIDE	$87.50	$175.00	Nov 21, 2025 source file
Aurora Medical Center Kenosha Kenosha · Milwaukee-Waukesha, WI C-PEPTIDE	$87.50	$175.00	Nov 21, 2025 source file
Aurora Medical Center Manitowoc Two Rivers · Manitowoc, WI C-PEPTIDE	$87.50	$175.00	Nov 21, 2025 source file
Aurora Medical Center Mount Pleasant Mount Pleasant · Racine-Mount Pleasant, WI C-PEPTIDE	$87.50	$175.00	Nov 21, 2025 source file
Aurora Medical Center Oshkosh Oshkosh · Oshkosh-Neenah, WI C-PEPTIDE	$87.50	$175.00	Nov 21, 2025 source file
Aurora Medical Center Sheboygan County Sheboygan · Sheboygan, WI C-PEPTIDE	$87.50	$175.00	Nov 21, 2025 source file
Aurora Medical Center Summit Summit · Milwaukee-Waukesha, WI C-PEPTIDE	$87.50	$175.00	Nov 21, 2025 source file
Aurora Medical Center Washington County Hartford · Milwaukee-Waukesha, WI C-PEPTIDE	$87.50	$175.00	Nov 21, 2025 source file
Aurora Psychiatric Hospital Wauwatosa · Milwaukee-Waukesha, WI C-PEPTIDE	$87.50	$175.00	Nov 21, 2025 source file
Aurora St Lukes Medical Center Milwaukee · Milwaukee-Waukesha, WI C-PEPTIDE	$87.50	$175.00	Nov 21, 2025 source file
Aurora St Lukes Medical Center of Aurora Health Care Metro Milwaukee · Milwaukee-Waukesha, WI C-PEPTIDE	$87.50	$175.00	Nov 21, 2025 source file
Aurora St. Luke's South Shore of Aurora Health Care Metro Cudahy · Milwaukee-Waukesha, WI C-PEPTIDE	$87.50	$175.00	Nov 21, 2025 source file
Aurora West Allis Medical Center West Allis · Milwaukee-Waukesha, WI C-PEPTIDE	$87.50	$175.00	Nov 21, 2025 source file
Hudson Hospital Hudson · Minneapolis-St. Paul-Bloomington, MN-WI Chemistry	$99.24	$220.00	— source file
Memorial Hospital of Boscobel Boscobel · Platteville, WI C-PEPTIDE	$101.97	$198.00	Jun 27, 2026 source file
Gundersen Tri-County Hospital & Clinics Whitehall · Whitehall, WI C-PEPTIDE	$107.78	$170.00	Jun 27, 2026 source file
Gundersen St Josephs Hospital and Clinics Hillsboro · La Crosse-Onalaska, WI-MN C-PEPTIDE	$115.19	$219.00	Jun 27, 2026 source file
Gundersen Moundview Hospital and Clinics Friendship · Friendship, WI C-PEPTIDE	$118.87	$234.00	Jun 27, 2026 source file
Tamarack Health Ashland Medical Center Ashland · Ashland, WI Assay of C-Peptide	$119.13	$125.40	— source file
Marshfield Medical Center - Marshfield Marshfield · Wisconsin Rapids-Marshfield, WI C PEPTIDE ASSAY-TECH	$121.60	$128.00	Feb 20, 2026 source file
AdventHealth Durand Durand · Durand, WI HC ASSAY OF C-PEPTIDE - C-PEPTIDE	$125.19	$125.19	Apr 1, 2026 source file
Black River Memorial Hospital Black River Falls · Black River Falls, WI C-Peptide	$144.00	$160.00	Jan 8, 2026 source file
Aspirus Divine Savior Hospital Portage · Madison, WI Fac Assay of C-Peptide	$151.45	$233.00	Apr 1, 2026 source file
Aspirus Eagle River Hospital Eagle River · Eagle River, WI Fac Assay of C-Peptide	$151.45	$233.00	Apr 1, 2026 source file
Aspirus Langlade Hospital Antigo · Antigo, WI Fac Assay of C-Peptide	$151.45	$233.00	Apr 1, 2026 source file
Aspirus Medford Hospital Medford · Medford, WI Fac Assay of C-Peptide	$151.45	$233.00	Apr 1, 2026 source file
Aspirus Merrill Hospital Merrill · Merrill, WI Fac Assay of C-Peptide	$151.45	$233.00	Apr 1, 2026 source file
Aspirus Plover Hospital Stevens Point · Stevens Point-Plover, WI Fac Assay of C-Peptide	$151.45	$233.00	Apr 1, 2026 source file
Aspirus Rhinelander Hospital Rhinelander · Rhinelander, WI Fac Assay of C-Peptide	$151.45	$233.00	Apr 1, 2026 source file
Aspirus Stanley Hospital Stanley · Eau Claire, WI Fac Assay of C-Peptide	$151.45	$233.00	Apr 1, 2026 source file
Aspirus Stevens Point Hospital Stevens Point · Stevens Point-Plover, WI Fac Assay of C-Peptide	$151.45	$233.00	Apr 1, 2026 source file
Aspirus Tomahawk Hospital Tomahawk · Tomahawk, WI Fac Assay of C-Peptide	$151.45	$233.00	Apr 1, 2026 source file
Aspirus Wausau Hospital Wausau · Wausau, WI Fac Assay of C-Peptide	$151.45	$233.00	Apr 1, 2026 source file
Aspirus Wisconsin Rapids Hospital Wisconsin Rapids · Wisconsin Rapids-Marshfield, WI Fac Assay of C-Peptide	$151.45	$233.00	Apr 1, 2026 source file
Howard Young Medical Center Woodruff · Woodruff, WI Fac Assay of C-Peptide	$151.45	$233.00	Apr 1, 2026 source file
Cumberland Memorial Hospital Cumberland · Rice Lake, WI C-PEPTIDE	$174.10	$174.10	— source file
PAM Rehabilitation Hospital of Wausau Wausau · Wausau, WI C-Peptide	$208.10	$208.10	Aug 6, 2026 source file
Crossing Rivers Health Medical Center Prairie Du Chien · Prairie Du Chien, WI C-peptide (protein) level	$214.00	$214.00	Jul 23, 2026 source file
Froedtert Pleasant Prairie Hospital Pleasant Prairie · Kenosha, WI Lab - C-Peptide Protein Level	$216.15	$288.20	— source file
Children's Hospital of Wisconsin Milwaukee · Milwaukee-Waukesha, WI HBC C PEPTIDE BLOOD	$240.08	$436.50	Mar 23, 2026 source file
Orthopaedic Hospital of Wisconsin Glendale · Milwaukee-Waukesha, WI C-PEPTIDE	$240.09	$453.00	— source file
Mercyhealth Hospital & Trauma Center Janesville · Janesville-Beloit, WI CHG ASSAY OF C-PEPTIDE	$288.94	$385.25	Mar 1, 2026 source file
Mercyhealth Hospital & Medical Center - Walworth Lake Geneva · Whitewater-Elkhorn, WI CHG ASSAY OF C-PEPTIDE	$309.10	$412.14	Mar 1, 2026 source file
Tamarack Health Hayward Medical Center Hayward · Hayward, WI Assay C-Peptide	$478.00	$503.16	— source file

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	18	$43.46	$87.50
Green Bay, WI	5	$44.91	$81.18
Oshkosh-Neenah, WI	5	$18.81	$40.99
Appleton, WI	4	$18.81	$34.46
La Crosse-Onalaska, WI-MN	3	$52.00	$80.00
Madison, WI	3	$57.75	$64.73
Minneapolis-St. Paul-Bloomington, MN-WI	3	$30.41	$45.76
Platteville, WI	3	$59.25	$76.70
Stevens Point-Plover, WI	3	$85.50	$151.45
Wausau, WI	3	$85.50	$151.45
Eau Claire, WI	2	$85.50	$118.48
Fond du Lac, WI	2	$40.99	$64.24
Janesville-Beloit, WI	2	$86.87	$187.90
Racine-Mount Pleasant, WI	2	$87.50	$87.50
Rice Lake, WI	2	$85.50	$129.80
Sheboygan, WI	2	$81.18	$84.34
Whitewater-Elkhorn, WI	2	$87.50	$198.30
Wisconsin Rapids-Marshfield, WI	2	$121.60	$136.52
Antigo, WI	1	$151.45	$151.45
Ashland, WI	1	$119.13	$119.13
Berlin, WI	1	$40.99	$40.99
Black River Falls, WI	1	$144.00	$144.00
Brookfield, WI	1	$54.59	$54.59
Beaver Dam, WI	1	$81.70	$81.70
Durand, WI	1	$125.19	$125.19
Eagle River, WI	1	$151.45	$151.45
East Amery, WI	1	$74.04	$74.04
Friendship, WI	1	$118.87	$118.87
Hayward, WI	1	$478.00	$478.00
Kenosha, WI	1	$216.15	$216.15
Ladysmith, WI	1	$85.50	$85.50
Medford, WI	1	$151.45	$151.45
Merrill, WI	1	$151.45	$151.45
Minocqua, WI	1	$85.50	$85.50
Manitowoc, WI	1	$87.50	$87.50
Marinette, WI-MI	1	$87.50	$87.50
Neillsville, WI	1	$85.50	$85.50
New London, WI	1	$40.99	$40.99
Park Falls, WI	1	$85.50	$85.50
Prairie Du Chien, WI	1	$214.00	$214.00
Rhinelander, WI	1	$151.45	$151.45
Shawano, WI	1	$40.99	$40.99
Sparta, WI	1	$62.10	$62.10
Tomahawk, WI	1	$151.45	$151.45
Waupaca, WI	1	$40.99	$40.99
Whitehall, WI	1	$107.78	$107.78
Wild Rose, WI	1	$40.99	$40.99
Woodruff, WI	1	$151.45	$151.45

What it is

A C-peptide test shows how much insulin the pancreas is making. It helps tell type 1 from type 2 diabetes and find the cause of low blood sugar.

What the price covers

The price usually covers running the test. The blood draw (36415) is often billed as a separate line.

C-peptide blood test in other states

Median cash price across the state's hospitals.