PT/INR blood test cost in Nashville, TN
In Nashville-Davidson--Murfreesboro--Franklin, TN, 20 hospitals list a cash price for prothrombin time (PT/INR) clotting test: from $5.58 to $646.00, with a median of $73.64. The lowest listed price is at Saint Thomas Hospital for Specialty Surgery — $68.06 less than the median here. Across Tennessee, the median is $20.30 at 87 hospitals.
- The median here, $73.64, is 133% above the US median of $31.65.
- That is 17.2× Medicare's 2026 national rate for the same service ($4.29).
- Nashville, TN ranks 2nd of 2 metro areas in Tennessee by median, cheapest first.
- 9 of 20 hospitals list a cash price equal to their full list price, with no self-pay discount.
Cash prices at 20 facilities across 17 cities for code 85610, as an outpatient — the setting a self-pay patient normally buys. Collected Oct 31, 2026; the hospital files themselves were last updated between Jan 1, 2026 and Oct 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 Nashville-Davidson--Murfreesboro--Franklin, TN.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Saint Thomas Hospital for Specialty Surgery lowest Nashville, TN PT File of Apr 14, 2026 · source file | $5.58 | $20.00 | $3.86–$584.01 | 72% |
| Stones River Hospital Woodbury, TN · (615) 563-4001 PROTHROMBIN TIME+1 more line at this price File of Jul 1, 2026 · source file | $9.66 | $32.20 | $2.75–$14.69 | 70% |
| Saint Thomas Rutherford Hospital Murfreesboro, TN · (615) 396-4100 PROTHROMBIN TIME+1 more line at this price File of Jan 1, 2026 · source file | $9.66 | $32.20 | $3.86–$14.69 | 70% |
| Saint Thomas West Hospital Harding Pk Nashville, TN · (615) 222-2111 PROTHROMBIN TIME+1 more line at this price File of Jan 1, 2026 · source file | $9.66 | $32.20 | $3.86–$14.69 | 70% |
| Macon Community Hospital Lafayette, TN · (615) 666-2147 PT File of Mar 21, 2026 · source file | $15.42 | $25.70 | $2.43–$23.13 | 40% |
| Vanderbilt Wilson County Hospital Lebanon, TN · (615) 444-2250 HC PROTHROMBIN TIME (PT) File of Oct 1, 2026 · source file | $20.30 | $70.00 | — | 71% |
| Williamson Medical Center Franklin, TN · (615) 435-5000 PROTHROMBIN TIME(PT IN PROFILE File of Aug 1, 2026 · source file | $20.86 | $37.00 | $14.91–$35.15 | 44% |
| Saint Thomas West Hospital Harding Pk Nashville, TN · (615) 222-2111 RAPID COAG POC FINGER STICK+1 more line at this price File of Jan 1, 2026 · source file | $21.87 | $72.90 | $3.86–$14.69 | 70% |
| Saint Thomas Rutherford Hospital Murfreesboro, TN · (615) 396-4100 INR+3 more lines at this price File of Jan 1, 2026 · source file | $40.08 | $133.60 | $3.86–$14.69 | 70% |
| Stones River Hospital Woodbury, TN · (615) 563-4001 PROTHROMBIN TIME-PT+1 more line at this price File of Jul 1, 2026 · source file | $40.08 | $133.60 | $2.75–$14.69 | 70% |
| Sumner Regional Medical Center Gallatin, TN · (615) 328-8888 Prothrombin time File of Jul 10, 2026 · source file | $41.48 | $178.04 | $12.86 | 77% |
| Saint Thomas West Hospital Harding Pk Nashville, TN · (615) 222-2111 PROTIME (AS INR)+1 more line at this price File of Jan 1, 2026 · source file | $42.47 | $141.55 | $3.86–$14.69 | 70% |
| Saint Thomas West Hospital Harding Pk Nashville, TN · (615) 222-2111 PT (INR)+1 more line at this price File of Jan 1, 2026 · source file | $46.70 | $155.65 | $3.86–$14.69 | 70% |
| Riverview Regional Medical Center Carthage, TN · (615) 735-9815 Prothrombin time File of Jul 10, 2026 · source file | $48.35 | $148.30 | $16.29 | 67% |
| Saint Thomas West Hospital Harding Pk Nashville, TN · (615) 222-2111 INR HEP ABSORBED+1 more line at this price File of Jan 1, 2026 · source file | $51.71 | $172.35 | $3.86–$14.69 | 70% |
| Saint Thomas Rutherford Hospital Murfreesboro, TN · (615) 396-4100 CL PROTMIE/INR+1 more line at this price File of Jan 1, 2026 · source file | $52.46 | $174.85 | $3.86–$14.69 | 70% |
| Saint Thomas West Hospital Harding Pk Nashville, TN · (615) 222-2111 CL PROTMIE/INR+1 more line at this price File of Jan 1, 2026 · source file | $52.46 | $174.85 | $3.86–$14.69 | 70% |
| Saint Thomas West Hospital Harding Pk Nashville, TN · (615) 222-2111 PROTHROMBIN (INR) POC+1 more line at this price File of Jan 1, 2026 · source file | $52.58 | $175.25 | $3.86–$14.69 | 70% |
| Williamson Medical Center Franklin, TN · (615) 435-5000 PROTHROMBIN TIME (PROTIME) File of Aug 1, 2026 · source file | $54.97 | $97.50 | $39.29–$92.62 | 44% |
| Metro Nashville General Hospital Nashville, TN · (615) 341-4000 Prothrombin Time and INR+1 more line at this price File of Sep 1, 2026 · source file | $72.00 | $120.00 | — | 40% |
| Trousdale Medical Center Hartsville, TN · (615) 374-2221 Prothrombin time File of Jul 10, 2026 · source file | $75.27 | $148.46 | $11.50 | 49% |
| Tristar Northcrest Medical Center Springfield, TN · (615) 384-2411 PROTIME+1 more line at this price File of Sep 1, 2026 · source file | $130.89 | $130.89 | $4.29–$107.33 | — |
| Tristar Summit Medical Center Mt Juliet, TN · (615) 316-3000 PROTIME File of Sep 1, 2026 · source file | $302.00 | $302.00 | $55.60–$265.76 | — |
| Tristar Horizon Medical Center Dickson, TN · (615) 446-0446 PROTIME File of Sep 1, 2026 · source file | $302.12 | $302.12 | $55.62–$277.95 | — |
| Tristar Skyline Medical Center Nashville, TN · (615) 769-2000 PROTIME File of Sep 1, 2026 · source file | $497.40 | $497.40 | $91.57–$487.45 | — |
| Tristar Stonecrest Medical Center Smyrna, TN · (615) 768-2000 Prothrombin time; +1 more line at this price File of Sep 1, 2026 · source file | $538.07 | $538.07 | $4.29–$495.02 | — |
| Tristar Southern Hills Medical Center Antioch, TN · (615) 781-4000 PROTIME File of Sep 1, 2026 · source file | $595.00 | $595.00 | $109.54–$523.60 | — |
| Tristar Ashland City Medical Center Ashland City, TN · (615) 792-3030 Prothrombin time; +1 more line at this price File of Sep 1, 2026 · source file | $606.94 | $606.94 | $4.29–$2,000.00 | — |
| Tristar Hendersonville Medical Center Hendersonville, TN · (615) 338-1000 PROTIME File of Sep 1, 2026 · source file | $633.65 | $633.65 | $116.65–$582.96 | — |
| Tristar Centennial Medical Center Nashville, TN · (615) 342-1000 PROTIME File of Sep 1, 2026 · source file | $646.00 | $646.00 | $118.93–$646.00 | — |
Outpatient: lowest $5.58, median $73.64, highest $646.00 — a 115.8× difference within the same market.
As an inpatient, the same code is billed by 7 facilities here, median $9.66. 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 6 of 18 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at none is it 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.