Phosphorus test cost in Washington
In Washington, 58 hospitals publish a cash price for phosphorus (phosphate) blood test: from $17.50 to $196.70, with a median of $39.83. The lowest price is at Providence Mount Carmel Hospital (Colville). The highest price is 11.2× the lowest.
Outpatient cash prices, one line per hospital — its lowest listed price for code 84100. Prices for both sides of the body and inpatient prices are not mixed in. Collected Sep 29, 2026. See them on a map
Lowest$17.50Providence Mount Carmel Hospital
Median$39.83half of hospitals charge less
Highest$196.70in Washington
Lowest saves$22.33vs the median
Hospitals in Washington, cheapest first
| Hospital | Cash price | List price | File date |
|---|---|---|---|
| Providence Mount Carmel Hospital lowest Colville · Spokane-Spokane Valley, WA HC ASSAY PHOSPHORUS | $17.50 | $25.00 | Apr 1, 2026 source file |
| Valley Medical Center Renton · Seattle-Tacoma-Bellevue, WA Assay of Phosphorus Inorganic | $19.60 | $28.00 | Mar 12, 2026 source file |
| Lake Chelan Community Hospital Chelan · Wenatchee-East Wenatchee, WA Phosphate level | $19.69 | $19.69 | Sep 1, 2026 source file |
| Confluence Health Hospital Wenatchee · Wenatchee-East Wenatchee, WA HC Assay of Phosphorus | $20.70 | $23.00 | Apr 21, 2026 source file |
| Saint Clare Hospital Lakewood · Seattle-Tacoma-Bellevue, WA HC PHOSPHORUS | $21.14 | $73.33 | Feb 28, 2026 source file |
| St Anthony Hospital Gig Harbor · Seattle-Tacoma-Bellevue, WA HC PHOSPHORUS | $22.31 | $73.33 | Feb 28, 2026 source file |
| Highline Medical Center Burien · Seattle-Tacoma-Bellevue, WA HC PHOSPHORUS | $22.40 | $73.33 | Feb 28, 2026 source file |
| St Francis Community Hospital Federal Way · Seattle-Tacoma-Bellevue, WA HC PHOSPHORUS | $23.02 | $73.33 | Feb 28, 2026 source file |
| Virginia Mason Medical Center Seattle · Seattle-Tacoma-Bellevue, WA PHOSPHORUS | $23.97 | $47.00 | Jan 1, 2026 source file |
| Snoqualmie Valley Hospital Snoqualmie · Seattle-Tacoma-Bellevue, WA Facility Fee HC ASSAY OF INORGANIC PHOSPHORUS | $24.28 | $41.86 | Apr 14, 2026 source file |
| St Joseph Medical Center Tacoma · Seattle-Tacoma-Bellevue, WA HC PHOSPHORUS | $24.29 | $73.33 | Feb 28, 2026 source file |
| St Elizabeth Hospital Enumclaw · Seattle-Tacoma-Bellevue, WA HC PHOSPHORUS | $25.92 | $73.33 | Feb 28, 2026 source file |
| Prov Sacred Hrt Medical Center & Childs Hospital Spokane · Spokane-Spokane Valley, WA HC ASSAY PHOSPHORUS | $28.00 | $40.00 | Apr 1, 2026 source file |
| Quincy Valley Medical Center Quincy · Moses Lake, WA Phosphate level | $28.08 | $28.08 | May 27, 2026 source file |
| Olympic Medical Center Port Angeles · Port Angeles, WA Phosphate level | $31.20 | $39.00 | Jun 24, 2026 source file |
| St. Michael Medical Center Silverdale · Bremerton-Silverdale-Port Orchard, WA HC PHOSPHORUS | $32.37 | $73.33 | Feb 28, 2026 source file |
| Lourdes Health Pasco · Kennewick-Richland, WA ASSAY OF PHOSPHORUS | $32.50 | $81.26 | Jul 10, 2026 source file |
| Seattle Children's Hospital Seattle · Seattle-Tacoma-Bellevue, WA Esrd Assay of Phosphorus | $32.70 | $32.70 | Mar 31, 2026 source file |
| Summit Pacific Medical Center Elma · Aberdeen, WA Phosphate level | $33.48 | $62.00 | Aug 31, 2026 source file |
| Overlake Medical Center & Clinics Bellevue · Seattle-Tacoma-Bellevue, WA Hc Assay Of Inorganic Phosphorus | $34.50 | $69.00 | Apr 1, 2026 source file |
| Swedish Edmonds Edmonds · Seattle-Tacoma-Bellevue, WA HC ASSAY PHOSPHORUS | $35.04 | $73.00 | Apr 1, 2026 source file |
| Swedish Issaquah Issaquah · Seattle-Tacoma-Bellevue, WA HC ASSAY PHOSPHORUS | $35.04 | $73.00 | Apr 1, 2026 source file |
| Swedish Medical Center Seattle · Seattle-Tacoma-Bellevue, WA HC ASSAY PHOSPHORUS | $35.04 | $73.00 | Apr 1, 2026 source file |
| Swedish Medical Center / Cherry Hill Seattle · Seattle-Tacoma-Bellevue, WA HC ASSAY PHOSPHORUS | $35.04 | $73.00 | Apr 1, 2026 source file |
| Willapa Harbor Hospital South Bend · South Bend, WA PHOSPHATE LEVEL | $35.70 | $51.00 | Feb 24, 2026 source file |
| PeaceHealth Peace Island Medical Center Friday Harbor · Friday Harbor, WA PHOSPHATE LEVEL | $35.75 | $55.00 | Mar 20, 2026 source file |
| Providence Regional Medical Center Everett Everett · Seattle-Tacoma-Bellevue, WA HC ASSAY PHOSPHORUS | $37.96 | $73.00 | Apr 1, 2026 source file |
| Whitman Hospital and Medical Center Colfax · Pullman, WA Phosphate level | $38.40 | $48.00 | Jun 29, 2026 source file |
| Legacy Salmon Creek Medical Center Vancouver · Portland-Vancouver-Hillsboro, OR-WA HC PHOSPHORUS | $39.65 | $61.00 | Apr 1, 2026 source file |
| Jefferson Healthcare Port Townsend · Port Townsend, WA Phosphate level | $40.00 | $50.00 | Aug 6, 2026 source file |
| Shriners Childrens - Spokane Spokane · Spokane-Spokane Valley, WA PHOSPHATE LEVEL | $41.20 | $41.20 | Mar 18, 2026 source file |
| Ocean Beach Hospital Ilwaco · Ilwaco, WA HC ASSAY PHOSPHORUS | $41.25 | $55.00 | Jul 2, 2026 source file |
| Prosser Memorial Health Hospital Prosser · Kennewick-Richland, WA HC ASSAY PHOSPHORUS | $45.10 | $82.00 | Jan 1, 2025 source file |
| PeaceHealth St John Medical Center Longview · Longview-Kelso, WA PHOSPHATE LEVEL | $48.75 | $75.00 | Mar 21, 2026 source file |
| Cascade Valley Hospital Arlington · Seattle-Tacoma-Bellevue, WA HC ASSAY OF PHOSPHORUS | $49.60 | $62.00 | Mar 26, 2026 source file |
| Samaritan Hospital Moses Lake · Moses Lake, WA Phosphate level | $50.00 | $50.00 | Jan 4, 2026 source file |
| Cascade Medical Center Leavenworth · Wenatchee-East Wenatchee, WA Assay od phosphorus | $52.00 | $65.00 | May 15, 2026 source file |
| Kadlec Regional Medical Center Richland · Kennewick-Richland, WA HC ASSAY PHOSPHORUS | $53.20 | $76.00 | Apr 1, 2026 source file |
| PeaceHealth United General Medical Center Sedro Woolley · Mount Vernon-Anacortes, WA PHOSPHATE LEVEL | $54.60 | $84.00 | Mar 21, 2026 source file |
| Arbor Health Morton Hospital Morton · Centralia, WA Phosphate level | $55.18 | $89.00 | May 18, 2026 source file |
| Skagit Valley Hospital Mount Vernon · Mount Vernon-Anacortes, WA HC ASSAY OF PHOSPHORUS | $55.20 | $69.00 | Mar 26, 2026 source file |
| Providence St Joseph Hospital Chewelah · Spokane-Spokane Valley, WA HC ASSAY PHOSPHORUS | $55.30 | $79.00 | Apr 1, 2026 source file |
| Kaiser Permanente Central Hospital Seattle · Seattle-Tacoma-Bellevue, WA PHOSPHORUS INORGANIC (PHOSPHATE) | $56.80 | $71.00 | Apr 1, 2026 source file |
| Kittitas County Public Hospital Dist 1 Ellensburg · Ellensburg, WA Phosphate level | $62.05 | $73.00 | Feb 4, 2026 source file |
| PeaceHealth Southwest Medical Center Vancouver · Portland-Vancouver-Hillsboro, OR-WA PHOSPHATE LEVEL | $62.40 | $96.00 | Mar 20, 2026 source file |
| Klickitat Valley Hospital Goldendale · Goldendale, WA PHOSPHORUS, SERUM | $64.00 | $80.00 | Dec 2, 2024 source file |
| Lincoln Hospital Davenport · Davenport, WA Phosphate level | $68.21 | $75.79 | Sep 14, 2026 source file |
| Othello Community Hospital Othello · Othello, WA Phosphate level | $68.81 | $91.75 | Jul 1, 2026 source file |
| PeaceHealth St Joseph Medical Center Bellingham · Bellingham, WA PHOSPHATE LEVEL | $69.55 | $107.00 | Mar 21, 2026 source file |
| Pullman Regional Hospital Pullman · Pullman, WA Phosphate level | $70.55 | $83.00 | Jun 9, 2026 source file |
| Astria Toppenish Hospital Toppenish · Yakima, WA Phosphorus | $72.15 | $111.00 | Apr 1, 2026 source file |
| Forks Community Hospital Forks · Port Townsend, WA Phosphate level | $74.40 | $93.00 | Jul 9, 2026 source file |
| Astria Sunnyside Hospital Sunnyside · Kennewick-Richland, WA Phosphorus | $78.66 | $138.00 | Apr 1, 2026 source file |
| Providence St Mary Medical Center Walla Walla · Walla Walla, WA HC ASSAY PHOSPHORUS | $86.10 | $123.00 | Apr 1, 2026 source file |
| Mason General Hospital & Family of Clinics Shelton · Shelton, WA Phosphorus Level | $105.53 | $140.70 | Mar 10, 2026 source file |
| Providence Centralia Hospital Centralia · Centralia, WA HC ASSAY PHOSPHORUS | $132.08 | $254.00 | Apr 1, 2026 source file |
| Providence St Peter Hospital Olympia · Olympia-Lacey-Tumwater, WA HC ASSAY PHOSPHORUS | $132.08 | $254.00 | Apr 1, 2026 source file |
| Providence Holy Family Hospital Spokane · Spokane-Spokane Valley, WA HC ASSAY PHOSPHORUS | $196.70 | $281.00 | 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 |
|---|---|---|---|
| Seattle-Tacoma-Bellevue, WA | 18 | $19.60 | $29.31 |
| Spokane-Spokane Valley, WA | 5 | $17.50 | $41.20 |
| Kennewick-Richland, WA | 4 | $32.50 | $49.15 |
| Wenatchee-East Wenatchee, WA | 3 | $19.69 | $20.70 |
| Centralia, WA | 2 | $55.18 | $93.63 |
| Moses Lake, WA | 2 | $28.08 | $39.04 |
| Mount Vernon-Anacortes, WA | 2 | $54.60 | $54.90 |
| Port Townsend, WA | 2 | $40.00 | $57.20 |
| Portland-Vancouver-Hillsboro, OR-WA | 2 | $39.65 | $51.02 |
| Pullman, WA | 2 | $38.40 | $54.48 |
| Aberdeen, WA | 1 | $33.48 | $33.48 |
| Bellingham, WA | 1 | $69.55 | $69.55 |
| Bremerton-Silverdale-Port Orchard, WA | 1 | $32.37 | $32.37 |
| Davenport, WA | 1 | $68.21 | $68.21 |
| Ellensburg, WA | 1 | $62.05 | $62.05 |
| Friday Harbor, WA | 1 | $35.75 | $35.75 |
| Goldendale, WA | 1 | $64.00 | $64.00 |
| Ilwaco, WA | 1 | $41.25 | $41.25 |
| Longview-Kelso, WA | 1 | $48.75 | $48.75 |
| Olympia-Lacey-Tumwater, WA | 1 | $132.08 | $132.08 |
| Othello, WA | 1 | $68.81 | $68.81 |
| Port Angeles, WA | 1 | $31.20 | $31.20 |
| South Bend, WA | 1 | $35.70 | $35.70 |
| Shelton, WA | 1 | $105.53 | $105.53 |
| Walla Walla, WA | 1 | $86.10 | $86.10 |
| Yakima, WA | 1 | $72.15 | $72.15 |
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 phosphorus test measures phosphate in the blood. It is used with calcium for kidney disease, bone disease and parathyroid problems.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.
Phosphorus (phosphate) blood test in other states
- Alabama$24.35
- Alaska$66.31
- Arizona$21.38
- Arkansas$23.47
- California$75.60
- Colorado$82.00
- Connecticut$25.58
- Delaware$50.00
- District of Columbia$57.79
- Florida$61.00
- Georgia$34.98
- Hawaii$47.60
- Idaho$29.70
- Illinois$62.26
- Indiana$29.79
- Iowa$35.70
- Kansas$35.36
- Kentucky$52.25
- Louisiana$16.20
- Maine$27.36
- Maryland$5.79
- Massachusetts$26.00
- Michigan$21.00
- Minnesota$38.34
- Mississippi$26.00
- Missouri$37.20
- Montana$51.83
- Nebraska$52.75
- Nevada$82.63
- New Hampshire$61.80
- New Jersey$8.05
- New Mexico$70.33
- New York$20.17
- North Carolina$47.70
- North Dakota$33.75
- Ohio$35.75
- Oklahoma$32.55
- Oregon$29.25
- Pennsylvania$37.20
- Puerto Rico$16.73
- Rhode Island$38.70
- South Carolina$48.28
- South Dakota$57.10
- Tennessee$29.14
- Texas$62.31
- Utah$132.09
- Vermont$45.00
- Virginia$52.80
- West Virginia$31.19
- Wisconsin$41.60
- Wyoming$30.21
Median cash price across the state's hospitals.