PT/INR blood test cost in Seattle, WA
In Seattle-Tacoma-Bellevue, WA, 18 hospitals list a cash price for prothrombin time (PT/INR) clotting test: from $6.02 to $75.00, with a median of $33.56. The lowest listed price is at Overlake Medical Center & Clinics — $27.54 less than the median here. Across Washington, the median is $40.00 at 59 hospitals.
- The median here, $33.56, is 6% above the US median of $31.65.
- That is 7.8× Medicare's 2026 national rate for the same service ($4.29).
- 1 of 18 hospitals list a cash price equal to their full list price, with no self-pay discount.
Cash prices at 18 facilities across 14 cities for code 85610, as an outpatient — the setting a self-pay patient normally buys. Collected Nov 6, 2026; the hospital files themselves were last updated between Jan 1, 2026 and Apr 14, 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 | Insurers pay | Off list |
|---|---|---|---|---|
| Overlake Medical Center & Clinics lowest Bellevue, WA · (425) 688-5000 Hc Prothrombin Time Lab4619 File of Apr 1, 2026 · source file | $6.02 | $12.04 | — | 50% |
| Overlake Medical Center & Clinics Bellevue, WA · (425) 688-5000 Hc Prothrombin Time Lab3043 File of Apr 1, 2026 · source file | $12.84 | $25.67 | — | 50% |
| Snoqualmie Valley Hospital Snoqualmie, WA · (425) 831-2300 Facility Fee HC PROTHROMBIN TIME LAB6187+6 more lines at this price File of Apr 14, 2026 · source file | $21.98 | $37.90 | $4.20–$34.87 | 42% |
| Snoqualmie Valley Hospital Snoqualmie, WA · (425) 831-2300 Facility Fee HC PROTHROMBIN TIME LAB6787 File of Apr 14, 2026 · source file | $21.99 | $37.91 | $4.20–$34.88 | 42% |
| Swedish Edmonds Edmonds, WA · (425) 640-4000 HC PROTHROMBIN TIME LAB+1 more line at this price File of Apr 1, 2026 · source file | $25.44 | $53.00 | — | 52% |
| Swedish Medical Center Seattle, WA · (206) 386-6000 HC PROTHROMBIN TIME+1 more line at this price File of Apr 1, 2026 · source file | $25.44 | $53.00 | — | 52% |
| Swedish Issaquah Issaquah, WA · (425) 313-4000 HC PROTHROMBIN TIME+1 more line at this price File of Apr 1, 2026 · source file | $25.44 | $53.00 | — | 52% |
| Swedish Medical Center / Cherry Hill Seattle, WA · (206) 320-2000 HC PROTHROMBIN TIME+1 more line at this price File of Apr 1, 2026 · source file | $25.44 | $53.00 | — | 52% |
| Virginia Mason Medical Center Seattle, WA · (206) 223-6600 PROTHROMBIN TIME File of Jan 1, 2026 · source file | $26.01 | $51.00 | $30.60–$40.80 | 49% |
| Providence Regional Medical Center Everett Everett, WA · (425) 261-2000 HC PROTHROMBIN TIME LAB+2 more lines at this price File of Apr 1, 2026 · source file | $27.56 | $53.00 | — | 48% |
| Overlake Medical Center & Clinics Bellevue, WA · (425) 688-5000 Hc Prothrombin Time File of Apr 1, 2026 · source file | $28.00 | $56.00 | — | 50% |
| Saint Clare Hospital Lakewood, WA · (253) 588-1711 HC PROTHROMBIN TIME POC File of Feb 28, 2026 · source file | $32.65 | $113.27 | $4.29–$84.96 | 71% |
| St Anthony Hospital Gig Harbor, WA · (253) 530-2050 HC PROTHROMBIN TIME POC File of Feb 28, 2026 · source file | $34.46 | $113.27 | $4.29–$84.96 | 70% |
| Highline Medical Center Burien, WA · (206) 431-5237 HC PROTHROMBIN TIME POC File of Feb 28, 2026 · source file | $34.59 | $113.27 | $4.29–$101.95 | 69% |
| St Francis Community Hospital Federal Way, WA · (253) 944-8100 HC PROTHROMBIN TIME POC File of Feb 28, 2026 · source file | $35.55 | $113.27 | $4.29–$84.96 | 69% |
| St Joseph Medical Center Tacoma, WA · (253) 627-4101 HC PROTHROMBIN TIME POC File of Feb 28, 2026 · source file | $37.52 | $113.27 | $4.29–$84.96 | 67% |
| St Elizabeth Hospital Enumclaw, WA · (360) 825-2505 HC PROTHROMBIN TIME POC File of Feb 28, 2026 · source file | $40.03 | $113.27 | $4.29–$101.95 | 65% |
| Cascade Valley Hospital Arlington, WA · (360) 435-2133 HC PROTHROMBIN TIME File of Mar 26, 2026 · source file | $44.80 | $56.00 | $4.29–$44.80 | 20% |
| Kaiser Permanente Central Hospital Seattle, WA · (206) 326-3000 PROTHROMBIN TIME File of Apr 1, 2026 · source file | $48.80 | $61.00 | $3.00–$12.00 | 20% |
| Kaiser Permanente Central Hospital Seattle, WA · (206) 326-3000 PSBC ONLY PROTHROMBIN TIME File of Apr 1, 2026 · source file | $49.44 | $61.80 | $3.00–$12.00 | 20% |
| Valley Medical Center Renton, WA · (425) 228-3450 Prothrombin Time File of Mar 12, 2026 · source file | $56.00 | $80.00 | — | 30% |
| Overlake Medical Center & Clinics Bellevue, WA · (425) 688-5000 Hc Prothrombin Time Lab6180 File of Apr 1, 2026 · source file | $59.68 | $119.35 | — | 50% |
| Seattle Children's Hospital Seattle, WA · (206) 987-2000 Prothrombin Time+2 more lines at this price File of Mar 31, 2026 · source file | $75.00 | $75.00 | $18.90–$72.00 | — |
| Overlake Medical Center & Clinics Bellevue, WA · (425) 688-5000 Hc Prothrombin Time Lab478 File of Apr 1, 2026 · source file | $82.32 | $164.64 | — | 50% |
| Overlake Medical Center & Clinics Bellevue, WA · (425) 688-5000 Hc Prothrombin Time Lab6188 File of Apr 1, 2026 · source file | $164.58 | $329.16 | — | 50% |
Outpatient: lowest $6.02, median $33.56, highest $75.00 — a 12.5× difference within the same market.
As an inpatient, the same code is billed by 19 facilities here, median $34.46. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
Cash or insurance?
At 8 of 11 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 1 it is below every plan's rate. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.
What PT/INR blood test is, what the price covers and why prices differ: PT/INR blood test explained.
1 row held back from this comparison
It is priced below $1 or below a tenth of the national median for code 85610 ($32.65). 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.
| Hospital | Cash price | File |
|---|---|---|
| Overlake Medical Center & Clinics Bellevue, WAChg Prothrombin Time | $3.22 | file |