Prothrombin time (PT/INR) clotting test in San Jose-Sunnyvale-Santa Clara, CA
In San Jose-Sunnyvale-Santa Clara, CA, 5 hospitals list a cash price for Prothrombin time (PT/INR) clotting test: from $4.72 to $228.00, with a median of $164.00. The lowest listed price is at El Camino Hospital.
Cash prices at 5 facilities across 5 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 Mar 31, 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 San Jose-Sunnyvale-Santa Clara, CA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Off list | File date |
|---|---|---|---|---|
| El Camino Hospital lowest Mountain View, CA HC PT INHIBITOR SCREEN, PROTHROMBIN TIME *5 1/3 | $4.72 | $18.90 | 75% | Apr 1, 2026 source file |
| El Camino Hospital Mountain View, CA HC PRO TIME | $36.75 | $147.00 | 75% | Apr 1, 2026 source file |
| Kaiser Foundation Hospital - San Jose San Jose, CA PROTHROMBIN TIME | $89.60 | $160.00 | 44% | — source file |
| Kaiser Foundation Hospital - Santa Clara Santa Clara, CA PROTHROMBIN TIME | $89.60 | $160.00 | 44% | — source file |
| Stanford Health Care Stanford, CA Labaclpt Prothrombin Time | $164.00 | $410.00 | 60% | Apr 1, 2026 source file |
| Stanford Health Care Stanford, CA HC Prothrombin Time | $164.00 | $410.00 | 60% | Apr 1, 2026 source file |
| Stanford Health Care Stanford, CA HC Protime | $164.00 | $410.00 | 60% | Apr 1, 2026 source file |
| Lucile Salter Packard Children's Hospital at Stanford Palo Alto, CA HC Control Pt Inh Scrn | $165.50 | $331.00 | 50% | Mar 31, 2026 source file |
| Lucile Salter Packard Children's Hospital at Stanford Palo Alto, CA HC Patient Pt Inh Scrn | $165.50 | $331.00 | 50% | Mar 31, 2026 source file |
| Lucile Salter Packard Children's Hospital at Stanford Palo Alto, CA HC POC-Prothrombin Time | $171.50 | $343.00 | 50% | Mar 31, 2026 source file |
| Lucile Salter Packard Children's Hospital at Stanford Palo Alto, CA HC Prothrombin Time | $205.00 | $410.00 | 50% | Mar 31, 2026 source file |
| Lucile Salter Packard Children's Hospital at Stanford Palo Alto, CA HC Labacltp Prothrombin Time | $205.00 | $410.00 | 50% | Mar 31, 2026 source file |
| Lucile Salter Packard Children's Hospital at Stanford Palo Alto, CA HC Prothrombin Time (Pt) | $228.00 | $456.00 | 50% | Mar 31, 2026 source file |
Outpatient: lowest $4.72, median $164.00, highest $228.00 — a 48.3× difference within the same market.
As an inpatient, the same code is billed by 4 facilities here, median $89.60. 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.