Prothrombin time (PT/INR) clotting test in Seattle-Tacoma-Bellevue, WA
In Seattle-Tacoma-Bellevue, WA, 15 hospitals list a cash price for Prothrombin time (PT/INR) clotting test: from $6.02 to $164.58, with a median of $30.33. The lowest listed price is at Overlake Medical Center & Clinics.
Cash prices at 15 facilities across 13 cities for code 85610, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Feb 28, 2026 and Apr 1, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Seattle-Tacoma-Bellevue, WA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Off list | File date |
|---|---|---|---|---|
| Overlake Medical Center & Clinics lowest Bellevue, WA Hc Prothrombin Time Lab4619 | $6.02 | $12.04 | 50% | Apr 1, 2026 source file |
| Overlake Medical Center & Clinics Bellevue, WA Hc Prothrombin Time Lab3043 | $12.84 | $25.67 | 50% | Apr 1, 2026 source file |
| Swedish Health Services Seattle, WA HC PROTHROMBIN TIME | $25.44 | $53.00 | 52% | Apr 1, 2026 source file |
| Swedish Health Services Seattle, WA HC PROTHROMBIN TIME | $25.44 | $53.00 | 52% | Apr 1, 2026 source file |
| Swedish Health Services Seattle, WA HC PROTHROMBIN TIME LAB | $25.44 | $53.00 | 52% | Apr 1, 2026 source file |
| Swedish Health Services Issaquah, WA HC PROTHROMBIN TIME | $25.44 | $53.00 | 52% | Apr 1, 2026 source file |
| Swedish Health Services Issaquah, WA HC PROTHROMBIN TIME LAB | $25.44 | $53.00 | 52% | Apr 1, 2026 source file |
| Swedish Health Services Seattle, WA HC PROTHROMBIN TIME LAB | $25.44 | $53.00 | 52% | Apr 1, 2026 source file |
| Swedish Edmonds Edmonds, WA HC PROTHROMBIN TIME | $25.44 | $53.00 | 52% | Apr 1, 2026 source file |
| Swedish Edmonds Edmonds, WA HC PROTHROMBIN TIME LAB | $25.44 | $53.00 | 52% | Apr 1, 2026 source file |
| Virginia Mason Medical Center Seattle, WA PROTHROMBIN TIME | $26.01 | $51.00 | 49% | — source file |
| Providence Health And Services - Washington Everett, WA HC PROTHROMBIN TIME | $27.56 | $53.00 | 48% | Apr 1, 2026 source file |
| Providence Health And Services - Washington Everett, WA HC PROTHROMBIN TIME LAB | $27.56 | $53.00 | 48% | Apr 1, 2026 source file |
| Providence Health And Services - Washington Everett, WA HC AC PROTIME | $27.56 | $53.00 | 48% | Apr 1, 2026 source file |
| Overlake Medical Center & Clinics Bellevue, WA Hc Prothrombin Time | $28.00 | $56.00 | 50% | Apr 1, 2026 source file |
| Saint Clare Hospital Lakewood, WA HC PROTHROMBIN TIME POC | $32.65 | $113.27 | 71% | Feb 28, 2026 source file |
| Franciscan Health System Gig Harbor, WA HC PROTHROMBIN TIME POC | $34.46 | $113.27 | 70% | Feb 28, 2026 source file |
| Highline Medical Center Burien, WA HC PROTHROMBIN TIME POC | $34.59 | $113.27 | 69% | Feb 28, 2026 source file |
| St Francis Community Hospital Federal Way, WA HC PROTHROMBIN TIME POC | $35.55 | $113.27 | 69% | Feb 28, 2026 source file |
| Franciscan Health System Tacoma, WA HC PROTHROMBIN TIME POC | $37.52 | $113.27 | 67% | Feb 28, 2026 source file |
| Enumclaw Regional Hospital Association Enumclaw, WA HC PROTHROMBIN TIME POC | $40.03 | $113.27 | 65% | Feb 28, 2026 source file |
| Public Hospital Dist No 1 Skagit dba Cascade Valley Hospital Arlington, WA HC PROTHROMBIN TIME | $44.80 | $56.00 | 20% | — source file |
| Kaiser Permanente Central Hospital E Seattle, WA PROTHROMBIN TIME | $48.80 | $61.00 | 20% | Apr 1, 2026 source file |
| Kaiser Permanente Central Hospital E Seattle, WA PSBC ONLY PROTHROMBIN TIME | $49.44 | $61.80 | 20% | Apr 1, 2026 source file |
| Overlake Medical Center & Clinics Bellevue, WA Hc Prothrombin Time Lab6180 | $59.68 | $119.35 | 50% | Apr 1, 2026 source file |
| Seattle Children's Hospital Seattle, WA Prothrombin Time | $75.00 | $75.00 | — | — source file |
| Seattle Children's Hospital Seattle, WA Warfarin Prothrombin Time | $75.00 | $75.00 | — | — source file |
| Seattle Children's Hospital Seattle, WA Prothrombin Time Coumatrak | $75.00 | $75.00 | — | — source file |
| Overlake Medical Center & Clinics Bellevue, WA Hc Prothrombin Time Lab478 | $82.32 | $164.64 | 50% | Apr 1, 2026 source file |
| Overlake Medical Center & Clinics Bellevue, WA Hc Prothrombin Time Lab6188 | $164.58 | $329.16 | 50% | Apr 1, 2026 source file |
Outpatient: lowest $6.02, median $30.33, highest $164.58 — a 27.3× difference within the same market.
As an inpatient, the same code is billed by 15 facilities here, median $27.78. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
What it is
The prothrombin time (PT) test measures how long it takes blood to clot, and is reported with the INR, a standardized number. It is used to monitor warfarin and to check clotting before surgery or with liver disease.
What the price covers
The price usually covers the PT and INR result. The blood draw is often a separate charge; a fingerstick home or clinic INR check may be billed differently.
1 row held back from this comparison
It is priced below $1 or below a tenth of the national median for code 85610 ($32.92). Such a line is almost always a physician's fee billed separately, an assistant's share or a placeholder — a real charge, but not the price of the procedure itself.
| Overlake Medical Center & Clinics Bellevue, WAChg Prothrombin Time | $3.22 | file |