Prothrombin time (PT/INR) clotting test in Key West-Key Largo, FL — inpatient
In Key West-Key Largo, FL, 2 hospitals list a cash price for Prothrombin time (PT/INR) clotting test as an inpatient: from $16.25 to $130.65, with a median of $53.95. The lowest listed price is at Mariners Hospital.
Cash prices at 2 facilities across 2 cities for code 85610, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Mar 30, 2026 and Mar 30, 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 Key West-Key Largo, FL.
Hospitals, cheapest first
| Hospital | Cash price | List price | Off list | File date |
|---|---|---|---|---|
| Mariners Hospital lowest Tavernier, FL ARU PT-INR (PROTHROMBIN TIME) | $16.25 | $25.00 | 35% | Mar 30, 2026 source file |
| Fishermens Health, INC Marathon, FL ARU PT-INR (PROTHROMBIN TIME) | $16.25 | $25.00 | 35% | Mar 30, 2026 source file |
| Fishermens Health, INC Marathon, FL HCA mixing studies-PT | $20.80 | $32.00 | 35% | Mar 30, 2026 source file |
| Mariners Hospital Tavernier, FL HCA mixing studies-PT | $20.80 | $32.00 | 35% | Mar 30, 2026 source file |
| Fishermens Health, INC Marathon, FL POCT pt prothrombin time | $53.95 | $83.00 | 35% | Mar 30, 2026 source file |
| Mariners Hospital Tavernier, FL POCT pt prothrombin time | $53.95 | $83.00 | 35% | Mar 30, 2026 source file |
| Fishermens Health, INC Marathon, FL PT-charge | $124.15 | $191.00 | 35% | Mar 30, 2026 source file |
| Mariners Hospital Tavernier, FL PT-charge | $124.15 | $191.00 | 35% | Mar 30, 2026 source file |
| Fishermens Health, INC Marathon, FL PT-INR (prothrombin time) | $130.65 | $201.00 | 35% | Mar 30, 2026 source file |
| Mariners Hospital Tavernier, FL PT-INR (prothrombin time) | $130.65 | $201.00 | 35% | Mar 30, 2026 source file |
Inpatient: lowest $16.25, median $53.95, highest $130.65 — a 8.0× difference within the same market.
As an outpatient, the same code is billed by 2 facilities here, median $53.95 — 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.