PT/INR blood test cost in St. Louis, MO
In St. Louis, MO-IL, 17 hospitals list a cash price for prothrombin time (PT/INR) clotting test: from $6.16 to $258.16, with a median of $38.50. The lowest listed price is at Ranken Jordan Pediatric Bridge Hospital — $32.34 less than the median here. Across Missouri, the median is $29.45 at 64 hospitals.
- The median here, $38.50, is 22% above the US median of $31.65.
- That is 9.0× Medicare's 2026 national rate for the same service ($4.29).
- St. Louis, MO ranks 2nd of 2 metro areas in Missouri by median, cheapest first.
- 2 of 17 hospitals list a cash price equal to their full list price, with no self-pay discount.
Cash prices at 17 facilities across 15 cities for code 85610, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 27, 2026; the hospital files themselves were last updated between Feb 6, 2026 and Jun 10, 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 St. Louis, MO-IL.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Ranken Jordan Pediatric Bridge Hospital lowest Maryland Heights, MO · (314) 872-6400 zzProthrombin Time+1 more line at this price File of Apr 24, 2026 · source file | $6.16 | $7.70 | — | 20% |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 POC Prothrombin Time+1 more line at this price File of Jun 10, 2026 · source file | $14.30 | $22.00 | $1.43–$22.00 | 35% |
| Mercy Hospital St Louis Saint Louis, MO · (314) 251-6000 Prothrombin Time Mixing Test+1 more line at this price File of Jun 4, 2026 · source file | $14.30 | $22.00 | $1.43–$22.00 | 35% |
| Mercy Hospital Washington Washington, MO · (636) 239-8000 POC Prothrombin Time+1 more line at this price File of Jun 10, 2026 · source file | $14.30 | $22.00 | $1.43–$19.80 | 35% |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 Prothrombin Time File of Jun 10, 2026 · source file | $14.30 | $22.00 | $1.43–$22.00 | 35% |
| Mercy Hospital Jefferson Festus, MO · (636) 933-1000 Prothrombin Time File of Jun 10, 2026 · source file | $14.30 | $22.00 | $1.43–$22.00 | 35% |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 POC Prothrombin Time File of Jun 10, 2026 · source file | $29.90 | $46.00 | $3.86–$9.65 | 35% |
| Mercy Hospital Jefferson Festus, MO · (636) 933-1000 POC Prothrombin Time File of Jun 10, 2026 · source file | $30.55 | $47.00 | $3.86–$9.65 | 35% |
| Shriners Childrens - St Louis Saint Louis, MO · (314) 432-3600 BLOOD TEST; CLOTTING TIME File of Mar 18, 2026 · source file | $30.90 | $30.90 | $3.82–$6.75 | — |
| Touchette Regional Hospital Cahokia Heights, IL · (618) 332-3060 Prothrombin time File of Apr 13, 2026 · source file | $34.72 | $56.00 | $2.12–$53.00 | 38% |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 Prothrombin Time Mixing Test File of Jun 10, 2026 · source file | $37.05 | $57.00 | $3.71–$57.00 | 35% |
| Mercy Hospital Washington Washington, MO · (636) 239-8000 Prothrombin Time Mixing Test File of Jun 10, 2026 · source file | $38.35 | $59.00 | $3.84–$53.10 | 35% |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 Prothrombin Tm File of Mar 21, 2026 · source file | $38.50 | $55.00 | $19.80–$78.57 | 30% |
| Jersey Community Hospital Jerseyville, IL · (618) 498-6402 PT/INR POC (RE) File of Mar 10, 2026 · source file | $42.00 | $42.00 | $21.97–$35.70 | — |
| Mercy Hospital St Louis Saint Louis, MO · (314) 251-6000 POC Prothrombin Time File of Jun 4, 2026 · source file | $48.10 | $74.00 | $3.86–$9.65 | 35% |
| Jersey Community Hospital Jerseyville, IL · (618) 498-6402 Prothrombin Time+1 more line at this price File of Mar 10, 2026 · source file | $50.00 | $50.00 | $26.15–$42.50 | — |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 Prothrombin Time Mixing Test File of Jun 10, 2026 · source file | $50.05 | $77.00 | $5.01–$77.00 | 35% |
| St Josephs Hospital Hospital Sisters Third Order of St Francis Breese, IL · (618) 526-4511 PROTHROMBIN TIME File of Mar 24, 2026 · source file | $54.00 | $75.00 | $3.11–$75.00 | 28% |
| Community Hospital of Staunton Staunton, IL · (618) 635-2200 PROTHROMBIN TIME PROFILE File of Feb 9, 2026 · source file | $54.20 | $108.40 | $31.34–$98.64 | 50% |
| Anderson Hospital Maryville, IL · (618) 288-5711 PROTHROMBIN TIME PROFILE File of Feb 6, 2026 · source file | $55.70 | $111.40 | $4.01–$100.26 | 50% |
| St Elizabeths Hospital of the Hospital Sisters of the Third Order of St Francis O'Fallon, IL · (618) 234-2120 HC PROTHROMBIN TIME (PT) File of Mar 24, 2026 · source file | $56.88 | $79.00 | $3.11–$79.00 | 28% |
| Mercy Hospital Jefferson Festus, MO · (636) 933-1000 Prothrombin Time Mixing Test File of Jun 10, 2026 · source file | $57.85 | $89.00 | $3.86–$9.65 | 35% |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 PT (COAG PROFILE) File of Mar 21, 2026 · source file | $65.10 | $93.00 | $33.48–$132.86 | 30% |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 ASSOC CHG PT (REF) File of Mar 21, 2026 · source file | $66.50 | $95.00 | $34.20–$135.71 | 30% |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 DAILY PROTIME+1 more line at this price File of Mar 21, 2026 · source file | $68.60 | $98.00 | $35.28–$140.00 | 30% |
| Hshs Holy Family Hospital Greenville, IL · (618) 664-1230 HC PROTHROMBIN TIME (PT) File of Mar 24, 2026 · source file | $74.16 | $103.00 | $3.27–$103.00 | 28% |
| St Josephs Hospital of the Hospital Sisters of the Third Order of St Francis Highland, IL · (618) 651-2600 PROTHROMBIN TIME File of Mar 24, 2026 · source file | $108.72 | $151.00 | $7.24–$151.00 | 28% |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 PROTHROMBIN TIME File of Mar 30, 2026 · source file | $258.16 | $430.27 | $430.27 | 40% |
Outpatient: lowest $6.16, median $38.50, highest $258.16 — a 41.9× difference within the same market.
As an inpatient, the same code is billed by 10 facilities here, median $54.95. 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 11 of 16 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.