Prothrombin time (PT/INR) clotting test in Eureka-Arcata, CA
In Eureka-Arcata, CA, 2 hospitals list a cash price for Prothrombin time (PT/INR) clotting test: from $26.01 to $143.31, with a median of $32.30. The lowest listed price is at St Joseph Health Northern California LLC.
Cash prices at 2 facilities across 2 cities for code 85610, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 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 Eureka-Arcata, CA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Off list | File date |
|---|---|---|---|---|
| St Joseph Health Northern California LLC lowest Eureka, CA HC PROTHROMBIN TIME LAB | $26.01 | $51.00 | 49% | Apr 1, 2026 source file |
| St Joseph Health Northern California LLC Eureka, CA HC PROTHROMBIN TIME | $26.01 | $51.00 | 49% | Apr 1, 2026 source file |
| St Joseph Health Northern California LLC Fortuna, CA HC PROTHROMBIN TIME | $29.07 | $57.00 | 49% | Apr 1, 2026 source file |
| St Joseph Health Northern California LLC Fortuna, CA HC PROTHROMBIN TIME LAB | $29.07 | $57.00 | 49% | Apr 1, 2026 source file |
| St Joseph Health Northern California LLC Fortuna, CA HC PROTHROMBIN TIME LAB | $35.53 | $69.67 | 49% | Apr 1, 2026 source file |
| St Joseph Health Northern California LLC Eureka, CA HC PROTHROMBIN TIME LAB | $35.53 | $69.67 | 49% | Apr 1, 2026 source file |
| St Joseph Health Northern California LLC Eureka, CA HC PROTHROMBIN TIME | $130.56 | $256.00 | 49% | Apr 1, 2026 source file |
| St Joseph Health Northern California LLC Fortuna, CA HC PROTHROMBIN TIME | $143.31 | $281.00 | 49% | Apr 1, 2026 source file |
Outpatient: lowest $26.01, median $32.30, highest $143.31 — a 5.5× difference within the same market.
As an inpatient, the same code is billed by 2 facilities here, median $83.05. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
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.