C-peptide test cost in Washington
In Washington, 60 hospitals publish a cash price for C-peptide blood test: from $13.20 to $284.36, with a median of $109.67. The lowest price is at Overlake Medical Center & Clinics (Bellevue). The highest price is 21.5× 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$13.20Overlake Medical Center & Clinics
Median$109.67half of hospitals charge less
Highest$284.36in Washington
Lowest saves$96.47vs the median
Hospitals in Washington, cheapest first
| Hospital | Cash price | List price | File date |
|---|---|---|---|
| Overlake Medical Center & Clinics lowest Bellevue · Seattle-Tacoma-Bellevue, WA Hc C-Peptide, Serum | $13.20 | $26.40 | Apr 1, 2026 source file |
| Legacy Salmon Creek Medical Center Vancouver · Portland-Vancouver-Hillsboro, OR-WA HC C-PEPTIDE | $27.07 | $41.65 | Apr 1, 2026 source file |
| Summit Pacific Medical Center Elma · Aberdeen, WA C-peptide (protein) level | $28.62 | $53.00 | Aug 31, 2026 source file |
| Olympic Medical Center Port Angeles · Port Angeles, WA C peptide (protein) level | $41.60 | $52.00 | Jun 24, 2026 source file |
| Prosser Memorial Health Hospital Prosser · Kennewick-Richland, WA HC ASSAY OF C PEPTIDE # | $42.90 | $78.00 | — source file |
| Willapa Harbor Hospital South Bend · South Bend, WA C-PEPTIDE (PROTEIN) LEVEL | $54.76 | $78.23 | — source file |
| Kittitas County Public Hospital Dist 1 Ellensburg · Ellensburg, WA C-peptide (protein) level | $56.95 | $67.00 | Feb 4, 2026 source file |
| PeaceHealth Peace Island Medical Center Friday Harbor · Friday Harbor, WA C-PEPTIDE (PROTEIN) LEVEL | $60.45 | $93.00 | — source file |
| Virginia Mason Medical Center Seattle · Seattle-Tacoma-Bellevue, WA C-PEPTIDE | $71.40 | $140.00 | — source file |
| Saint Clare Hospital Lakewood · Seattle-Tacoma-Bellevue, WA HC C-PEPTIDE | $74.68 | $259.06 | Feb 28, 2026 source file |
| St Anthony Hospital Gig Harbor · Seattle-Tacoma-Bellevue, WA HC C-PEPTIDE | $78.80 | $259.06 | Feb 28, 2026 source file |
| Highline Medical Center Burien · Seattle-Tacoma-Bellevue, WA HC C-PEPTIDE | $79.11 | $259.06 | Feb 28, 2026 source file |
| East Adams Rural Healthcare Ritzville · Othello, WA HC C-PEPTIDE, SERUM (REF LAB) | $79.50 | $106.00 | Jun 1, 2026 source file |
| St Francis Community Hospital Federal Way · Seattle-Tacoma-Bellevue, WA HC C-PEPTIDE | $81.30 | $259.06 | Feb 28, 2026 source file |
| Lourdes Health Pasco · Kennewick-Richland, WA ASSAY OF C-PEPTIDE | $85.12 | $212.80 | — source file |
| St Joseph Medical Center Tacoma · Seattle-Tacoma-Bellevue, WA HC C-PEPTIDE | $85.81 | $259.06 | Feb 28, 2026 source file |
| PeaceHealth United General Medical Center Sedro Woolley · Mount Vernon-Anacortes, WA ASSAY OF C-PEPTIDE | $87.10 | $134.00 | — source file |
| PeaceHealth St Joseph Medical Center Bellingham · Bellingham, WA ASSAY OF C-PEPTIDE | $89.05 | $137.00 | — source file |
| Confluence Health Hospital Wenatchee · Wenatchee-East Wenatchee, WA HC Assay of C-Peptide | $89.10 | $99.00 | — source file |
| St Elizabeth Hospital Enumclaw · Seattle-Tacoma-Bellevue, WA HC C-PEPTIDE | $91.55 | $259.06 | Feb 28, 2026 source file |
| PeaceHealth Southwest Medical Center Vancouver · Portland-Vancouver-Hillsboro, OR-WA ASSAY OF C-PEPTIDE | $91.65 | $141.00 | — source file |
| PeaceHealth St John Medical Center Longview · Longview-Kelso, WA ASSAY OF C-PEPTIDE | $91.65 | $141.00 | — source file |
| Providence Centralia Hospital Centralia · Centralia, WA HC ASSAY OF C-PEPTIDE CDM | $92.04 | $177.00 | Apr 1, 2026 source file |
| Providence St Peter Hospital Olympia · Olympia-Lacey-Tumwater, WA HC ASSAY OF C-PEPTIDE CDM | $92.04 | $177.00 | Apr 1, 2026 source file |
| Providence St Mary Medical Center Walla Walla · Walla Walla, WA HC ASSAY OF C-PEPTIDE CDM | $97.30 | $139.00 | Apr 1, 2026 source file |
| Kadlec Regional Medical Center Richland · Kennewick-Richland, WA HC ASSAY OF C-PEPTIDE CDM | $101.50 | $145.00 | Apr 1, 2026 source file |
| Cascade Valley Hospital Arlington · Seattle-Tacoma-Bellevue, WA HC C-PEPTIDE | $103.20 | $129.00 | — source file |
| Jefferson Healthcare Port Townsend · Port Townsend, WA C-peptide (protein) level | $104.00 | $130.00 | Aug 6, 2026 source file |
| Arbor Health Morton Hospital Morton · Centralia, WA C-peptide (protein) level | $104.78 | $169.00 | May 18, 2026 source file |
| Snoqualmie Valley Hospital Snoqualmie · Seattle-Tacoma-Bellevue, WA Facility Fee HC C-PEPTIDE, SERUM | $106.57 | $183.74 | — source file |
| Providence St Luke's Rehabilitation Medical Center Spokane · Spokane-Spokane Valley, WA HC ASSAY OF C-PEPTIDE CDM | $112.77 | $161.10 | Apr 1, 2026 source file |
| St. Michael Medical Center Silverdale · Bremerton-Silverdale-Port Orchard, WA HC C-PEPTIDE | $114.34 | $259.06 | Feb 28, 2026 source file |
| Kaiser Permanente Central Hospital Seattle · Seattle-Tacoma-Bellevue, WA C-PEPTIDE | $114.40 | $143.00 | Apr 1, 2026 source file |
| Prov Sacred Hrt Medical Center & Childs Hospital Spokane · Spokane-Spokane Valley, WA HC ASSAY OF C-PEPTIDE CDM | $114.80 | $164.00 | Apr 1, 2026 source file |
| Quincy Valley Medical Center Quincy · Moses Lake, WA C-peptide (protein) level | $121.67 | $121.67 | May 27, 2026 source file |
| Astria Sunnyside Hospital Sunnyside · Kennewick-Richland, WA C-Peptide LC | $122.55 | $215.00 | — source file |
| Providence St Joseph Hospital Chewelah · Spokane-Spokane Valley, WA HC ASSAY OF C-PEPTIDE CDM | $130.90 | $187.00 | Apr 1, 2026 source file |
| Whitman Hospital and Medical Center Colfax · Pullman, WA C-peptide (protein) level | $132.00 | $165.00 | Jun 29, 2026 source file |
| Pullman Regional Hospital Pullman · Pullman, WA C-peptide (protein) level | $135.15 | $159.00 | Jun 9, 2026 source file |
| Skagit Valley Hospital Mount Vernon · Mount Vernon-Anacortes, WA HC C-PEPTIDE | $140.00 | $175.00 | — source file |
| Swedish Issaquah Issaquah · Seattle-Tacoma-Bellevue, WA HC ASSAY OF C PEPTIDE LAB | $141.60 | $295.00 | Apr 1, 2026 source file |
| Swedish Medical Center Seattle · Seattle-Tacoma-Bellevue, WA HC ASSAY OF C PEPTIDE LAB | $141.60 | $295.00 | Apr 1, 2026 source file |
| Swedish Medical Center / Cherry Hill Seattle · Seattle-Tacoma-Bellevue, WA HC ASSAY OF C PEPTIDE LAB | $141.60 | $295.00 | Apr 1, 2026 source file |
| Shriners Childrens - Spokane Spokane · Spokane-Spokane Valley, WA ASSAY OF C-PEPTIDE | $148.70 | $148.70 | — source file |
| Swedish Edmonds Edmonds · Seattle-Tacoma-Bellevue, WA HC ASSAY OF C-PEPTIDE CDM | $150.72 | $314.00 | Apr 1, 2026 source file |
| Ocean Beach Hospital Ilwaco · Ilwaco, WA HC ASSAY OF C-PEPTIDE CDM | $152.25 | $203.00 | — source file |
| Providence Holy Family Hospital Spokane · Spokane-Spokane Valley, WA HC ASSAY OF C-PEPTIDE CDM | $154.70 | $221.00 | Apr 1, 2026 source file |
| Klickitat Valley Hospital Goldendale · Goldendale, WA C PEPTIDE | $160.00 | $200.00 | Dec 2, 2024 source file |
| Providence Regional Medical Center Everett Everett · Seattle-Tacoma-Bellevue, WA HC ASSAY OF C-PEPTIDE CDM | $163.28 | $314.00 | Apr 1, 2026 source file |
| Valley Medical Center Renton · Seattle-Tacoma-Bellevue, WA Assay of C-Peptide | $170.10 | $243.00 | — source file |
| Providence Mount Carmel Hospital Colville · Spokane-Spokane Valley, WA HC ASSAY OF C-PEPTIDE | $180.60 | $258.00 | Apr 1, 2026 source file |
| Mason General Hospital & Family of Clinics Shelton · Shelton, WA C-Peptide, Serum LC | $190.65 | $254.20 | — source file |
| Forks Community Hospital Forks · Port Townsend, WA C-peptide (protein) level | $192.80 | $241.00 | Jul 9, 2026 source file |
| Lake Chelan Community Hospital Chelan · Wenatchee-East Wenatchee, WA C-peptide (protein) level | $204.26 | $204.26 | Sep 1, 2026 source file |
| Samaritan Hospital Moses Lake · Moses Lake, WA C-peptide (protein) level | $207.00 | $207.00 | — source file |
| Seattle Children's Hospital Seattle · Seattle-Tacoma-Bellevue, WA C Peptide | $241.50 | $241.50 | — source file |
| Cascade Medical Center Leavenworth · Wenatchee-East Wenatchee, WA Assay of c-peptide | $251.20 | $314.00 | — source file |
| Othello Community Hospital Othello · Othello, WA C-peptide (protein) level | $263.63 | $351.50 | Jul 1, 2026 source file |
| Astria Toppenish Hospital Toppenish · Yakima, WA C-Peptide LC | $276.90 | $426.00 | — source file |
| Lincoln Hospital Davenport · Davenport, WA C-peptide (protein) level | $284.36 | $315.96 | Sep 14, 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 |
|---|---|---|---|
| Seattle-Tacoma-Bellevue, WA | 18 | $13.20 | $104.88 |
| Spokane-Spokane Valley, WA | 6 | $112.77 | $139.80 |
| Kennewick-Richland, WA | 4 | $42.90 | $93.31 |
| Wenatchee-East Wenatchee, WA | 3 | $89.10 | $204.26 |
| Centralia, WA | 2 | $92.04 | $98.41 |
| Moses Lake, WA | 2 | $121.67 | $164.34 |
| Mount Vernon-Anacortes, WA | 2 | $87.10 | $113.55 |
| Othello, WA | 2 | $79.50 | $171.56 |
| Port Townsend, WA | 2 | $104.00 | $148.40 |
| Portland-Vancouver-Hillsboro, OR-WA | 2 | $27.07 | $59.36 |
| Pullman, WA | 2 | $132.00 | $133.58 |
| Aberdeen, WA | 1 | $28.62 | $28.62 |
| Bellingham, WA | 1 | $89.05 | $89.05 |
| Bremerton-Silverdale-Port Orchard, WA | 1 | $114.34 | $114.34 |
| Davenport, WA | 1 | $284.36 | $284.36 |
| Ellensburg, WA | 1 | $56.95 | $56.95 |
| Friday Harbor, WA | 1 | $60.45 | $60.45 |
| Goldendale, WA | 1 | $160.00 | $160.00 |
| Ilwaco, WA | 1 | $152.25 | $152.25 |
| Longview-Kelso, WA | 1 | $91.65 | $91.65 |
| Olympia-Lacey-Tumwater, WA | 1 | $92.04 | $92.04 |
| Port Angeles, WA | 1 | $41.60 | $41.60 |
| South Bend, WA | 1 | $54.76 | $54.76 |
| Shelton, WA | 1 | $190.65 | $190.65 |
| Walla Walla, WA | 1 | $97.30 | $97.30 |
| Yakima, WA | 1 | $276.90 | $276.90 |
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 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
- Alabama$86.02
- Alaska$168.00
- Arizona$61.77
- Arkansas$60.42
- California$63.84
- Colorado$180.00
- Connecticut$95.70
- Delaware$268.80
- District of Columbia$154.89
- Florida$36.60
- Georgia$103.35
- Hawaii$159.90
- Idaho$97.00
- Illinois$103.60
- Indiana$132.53
- Iowa$105.22
- Kansas$104.90
- Kentucky$138.85
- Louisiana$55.42
- Maine$56.24
- Maryland$43.43
- Massachusetts$117.34
- Michigan$63.28
- Minnesota$82.38
- Mississippi$75.00
- Missouri$105.75
- Montana$147.00
- Nebraska$130.18
- Nevada$154.00
- New Hampshire$131.67
- New Jersey$29.07
- New Mexico$111.00
- New York$76.84
- North Carolina$77.70
- North Dakota$109.49
- Ohio$76.91
- Oklahoma$84.80
- Oregon$90.00
- Pennsylvania$105.00
- Puerto Rico$85.65
- Rhode Island$165.60
- South Carolina$153.36
- South Dakota$129.95
- Tennessee$63.58
- Texas$81.30
- Utah$170.08
- Vermont$186.41
- Virginia$109.20
- West Virginia$73.50
- Wisconsin$87.50
- Wyoming$117.74
Median cash price across the state's hospitals.