PT/INR blood test cost in Kalispell, MT — inpatient
In Kalispell, MT, 2 hospitals list a cash price for prothrombin time (PT/INR) clotting test as an inpatient: from $5.85 to $25.02, with a median of $15.44. The lowest listed price is at Logan Health Medical Center — $9.59 less than the median here. Across Montana, the median is $23.50 at 22 hospitals.
Cash prices at 2 facilities across 2 cities for code 85610, as an inpatient (admitted to hospital) . Collected Sep 29, 2026; the hospital files themselves were last updated between Apr 1, 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 Kalispell, MT.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Logan Health Medical Center lowest Kalispell, MT · (406) 752-5111 REF-ALUPP PT | $5.85 | $9.00 | — | 35% | Apr 1, 2026 source file |
| Logan Health Medical Center Kalispell, MT · (406) 752-5111 PROTHROMBIN TM | $7.15 | $11.00 | — | 35% | Apr 1, 2026 source file |
| Logan Health Medical Center Kalispell, MT · (406) 752-5111 REF-PNL PT/INR | $11.70 | $18.00 | — | 35% | Apr 1, 2026 source file |
| Logan Health - Whitefish Whitefish, MT · (406) 863-3550 PROTHROMBIN TM | $25.02 | $38.50 | — | 35% | Apr 1, 2026 source file |
| Logan Health Medical Center Kalispell, MT · (406) 752-5111 PROTHROMBIN TIME HOSP | $28.76 | $44.25 | — | 35% | Apr 1, 2026 source file |
| Logan Health Medical Center Kalispell, MT · (406) 752-5111 CHEM-PROTHROMBIN TIME | $32.50 | $50.00 | — | 35% | Apr 1, 2026 source file |
Inpatient: lowest $5.85, median $15.44, highest $25.02 — a 4.3× difference within the same market.
As an outpatient, the same code is billed by 2 facilities here, median $15.44 — that is the price to compare if you are not being admitted.
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.