Partial thromboplastin time (PTT) clotting test cost in Washington
In Washington, 32 hospitals publish a cash price for Partial thromboplastin time (PTT) clotting test: from $6.02 to $114.10, with a median of $35.85. The lowest price is at Overlake Medical Center & Clinics (Bellevue). The highest price is 19.0× the lowest.
Outpatient cash prices, one line per hospital — its lowest listed price for code 85730. Prices for both sides of the body and inpatient prices are not mixed in. Collected Sep 23, 2026.
Lowest$6.02Overlake Medical Center & Clinics
Median$35.85half pay less
Highest$114.10in Washington
Lowest saves$29.83vs 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 Thromboplas Time Partial Lab4619 | $6.02 | $12.04 | Apr 1, 2026 source file |
| Providence Health And Services - Washington Olympia · Olympia-Lacey-Tumwater, WA HC THROMBOPLASTIN TIME PARTIAL | $7.28 | $14.00 | Apr 1, 2026 source file |
| Providence Health And Services - Washington Centralia · Centralia, WA HC THROMBOPLASTIN TIME PARTIAL PLASMA/WHOLE BLOOD LAB | $7.28 | $14.00 | Apr 1, 2026 source file |
| Legacy Salmon Creek Medical Center Vancouver · Portland-Vancouver-Hillsboro, OR-WA HC ACT PARTIAL THROMBOPLASIN TIME | $9.54 | $14.68 | Apr 1, 2026 source file |
| Providence Health And Services - Washington Walla Walla · Walla Walla, WA HC THROMBOPLASTIN TIME PARTIAL PLASMA/WHOLE BLOOD LAB | $11.20 | $16.00 | Apr 1, 2026 source file |
| Providence Health And Services - Washington Colville · Spokane-Spokane Valley, WA HC PTT POST 60 MIN INCUBATION | $15.40 | $22.00 | Apr 1, 2026 source file |
| Providence Health And Services - Washington Spokane · Spokane-Spokane Valley, WA HC PTT POST 60 MIN INCUBATION | $15.40 | $22.00 | Apr 1, 2026 source file |
| Providence Health And Services - Washington Chewelah · Spokane-Spokane Valley, WA HC PTT POST 60 MIN INCUBATION | $15.40 | $22.00 | Apr 1, 2026 source file |
| Saint Clare Hospital Lakewood · Seattle-Tacoma-Bellevue, WA HC PARTIAL THROMBN TIME ACTVTD | $23.78 | $82.48 | Feb 28, 2026 source file |
| Franciscan Health System Gig Harbor · Seattle-Tacoma-Bellevue, WA HC PARTIAL THROMBN TIME ACTVTD | $25.09 | $82.48 | Feb 28, 2026 source file |
| Highline Medical Center Burien · Seattle-Tacoma-Bellevue, WA HC PARTIAL THROMBN TIME ACTVTD | $25.19 | $82.48 | Feb 28, 2026 source file |
| St Francis Community Hospital Federal Way · Seattle-Tacoma-Bellevue, WA HC PARTIAL THROMBN TIME ACTVTD | $25.89 | $82.48 | Feb 28, 2026 source file |
| Franciscan Health System Tacoma · Seattle-Tacoma-Bellevue, WA HC PARTIAL THROMBN TIME ACTVTD | $27.32 | $82.48 | Feb 28, 2026 source file |
| Enumclaw Regional Hospital Association Enumclaw · Seattle-Tacoma-Bellevue, WA HC PARTIAL THROMBN TIME ACTVTD | $29.15 | $82.48 | Feb 28, 2026 source file |
| Central Washington Health Services Association Wenatchee · Wenatchee-East Wenatchee, WA HC Thromboplastin Time Partial | $32.40 | $36.00 | — source file |
| Virginia Mason Medical Center Seattle · Seattle-Tacoma-Bellevue, WA APTT PART THROMBOPLASTIN TIME | $35.70 | $70.00 | — source file |
| Swedish Edmonds Edmonds · Seattle-Tacoma-Bellevue, WA HC THROMBOPLASTIN TIME PARTIAL PLASMA LAB | $36.00 | $75.00 | Apr 1, 2026 source file |
| Swedish Health Services Seattle · Seattle-Tacoma-Bellevue, WA HC THROMBOPLASTIN TIME PARTIAL PLASMA LAB | $36.00 | $75.00 | Apr 1, 2026 source file |
| Swedish Health Services Issaquah · Seattle-Tacoma-Bellevue, WA HC THROMBOPLASTIN TIME PARTIAL PLASMA LAB | $36.00 | $75.00 | Apr 1, 2026 source file |
| Harrison Medical Center Silverdale · Bremerton-Silverdale-Port Orchard, WA HC PARTIAL THROMBN TIME ACTVTD | $36.41 | $82.48 | Feb 28, 2026 source file |
| Providence Health And Services - Washington Everett · Seattle-Tacoma-Bellevue, WA HC THROMBOPLASTIN TIME PARTIAL | $41.08 | $79.00 | Apr 1, 2026 source file |
| Kaiser Permanente Central Hospital E Seattle · Seattle-Tacoma-Bellevue, WA PSBC ONLY APTT | $41.20 | $51.50 | Apr 1, 2026 source file |
| PeaceHealth Peace Island Medical Center Friday Harbor · Friday Harbor, WA COAGULATION ASSESSMENT BLOOD TEST; PLASMA OR WHOLE BLOOD | $42.25 | $65.00 | — source file |
| Shriners Childrens - Spokane Spokane · Spokane-Spokane Valley, WA COAGULATION ASSESSMENT BLOOD TEST; PLASMA OR WHOLE BLOOD | $52.10 | $52.10 | — source file |
| Public Hospital Dist No 1 Skagit dba Cascade Valley Hospital Arlington · Seattle-Tacoma-Bellevue, WA HC THROMBOPLASTIN INHIBITION PARTIAL | $64.80 | $81.00 | — source file |
| PeaceHealth United General Medical Center Sedro Woolley · Mount Vernon-Anacortes, WA COAGULATION ASSESSMENT BLOOD TEST; PLASMA OR WHOLE BLOOD | $65.00 | $100.00 | — source file |
| Public Hospital Dis No 1 Skagit dba Skagit Valley Hospital Mount Vernon · Mount Vernon-Anacortes, WA HC THROMBOPLASTIN INHIBITION PARTIAL | $74.00 | $92.50 | — source file |
| PeaceHealth Southwest Medical Center Vancouver · Portland-Vancouver-Hillsboro, OR-WA COAGULATION ASSESSMENT BLOOD TEST; PLASMA OR WHOLE BLOOD | $76.70 | $118.00 | — source file |
| St. John Medical Center Longview · Longview-Kelso, WA COAGULATION ASSESSMENT BLOOD TEST; PLASMA OR WHOLE BLOOD | $76.70 | $118.00 | — source file |
| St. Joseph Medical Center Bellingham · Bellingham, WA COAGULATION ASSESSMENT BLOOD TEST; PLASMA OR WHOLE BLOOD | $78.65 | $121.00 | — source file |
| Seattle Children's Hospital Seattle · Seattle-Tacoma-Bellevue, WA Act Partial Thromboplastn Time | $112.60 | $112.60 | — source file |
| Kadlec Regional Medical Center Richland · Kennewick-Richland, WA HC THROMBOPLASTIN TIME PARTIAL PLASMA/WHOLE BLOOD LAB | $114.10 | $163.00 | Apr 1, 2026 source file |
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 | 15 | $6.02 | $35.70 |
| Spokane-Spokane Valley, WA | 4 | $15.40 | $15.40 |
| Mount Vernon-Anacortes, WA | 2 | $65.00 | $69.50 |
| Portland-Vancouver-Hillsboro, OR-WA | 2 | $9.54 | $43.12 |
| Bellingham, WA | 1 | $78.65 | $78.65 |
| Bremerton-Silverdale-Port Orchard, WA | 1 | $36.41 | $36.41 |
| Centralia, WA | 1 | $7.28 | $7.28 |
| Friday Harbor, WA | 1 | $42.25 | $42.25 |
| Kennewick-Richland, WA | 1 | $114.10 | $114.10 |
| Longview-Kelso, WA | 1 | $76.70 | $76.70 |
| Olympia-Lacey-Tumwater, WA | 1 | $7.28 | $7.28 |
| Walla Walla, WA | 1 | $11.20 | $11.20 |
| Wenatchee-East Wenatchee, WA | 1 | $32.40 | $32.40 |
What it is
The partial thromboplastin time (PTT or aPTT) test measures how long it takes blood to clot through a different pathway than the PT test. It is used to check for bleeding disorders, before surgery, and to monitor heparin.
What the price covers
The price usually covers the PTT test. The blood draw is often billed separately.
Partial thromboplastin time (PTT) clotting test in other states
- Alabama$62.92
- Alaska$24.96
- Arizona$31.56
- Arkansas$29.00
- California$110.42
- Colorado$28.60
- Connecticut$29.73
- Delaware$77.24
- Florida$20.00
- Georgia$50.00
- Hawaii$15.60
- Idaho$15.03
- Illinois$47.50
- Indiana$51.00
- Iowa$37.70
- Kansas$71.50
- Kentucky$149.17
- Louisiana$23.52
- Maine$42.00
- Maryland$23.50
- Massachusetts$20.70
- Michigan$31.00
- Minnesota$56.01
- Mississippi$33.00
- Missouri$37.50
- Montana$51.20
- Nebraska$38.64
- Nevada$58.08
- New Hampshire$39.23
- New Jersey$6.91
- New Mexico$62.18
- New York$21.75
- North Carolina$45.50
- North Dakota$15.20
- Ohio$34.80
- Oklahoma$31.20
- Oregon$54.00
- Pennsylvania$44.40
- Puerto Rico$12.50
- Rhode Island$47.00
- South Carolina$48.50
- South Dakota$58.00
- Tennessee$10.50
- Texas$34.50
- Utah$89.90
- Vermont$54.67
- Virginia$43.20
- West Virginia$44.25
- Wisconsin$50.00
- Wyoming$13.05
Median cash price across the state's hospitals.