Partial thromboplastin time (PTT) clotting test in Vallejo, CA — inpatient
In Vallejo, CA, 3 hospitals list a cash price for Partial thromboplastin time (PTT) clotting test as an inpatient: from $15.00 to $360.00, with a median of $141.68. The lowest listed price is at Northbay Medical Center.
Cash prices at 3 facilities across 3 cities for code 85730, as an inpatient (admitted to hospital) . 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 Vallejo, CA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Off list | File date |
|---|---|---|---|---|
| Northbay Medical Center lowest Fairfield, CA Ptt-La W/Rflx To Hex Phs Conf | $15.00 | $15.00 | — | Apr 1, 2026 source file |
| Northbay Medical Center Fairfield, CA Ptt-La W/Rflx To Hex Phs Conf | $15.00 | $15.00 | — | Apr 1, 2026 source file |
| Kaiser Foundation Hospital - Vacaville Vacaville, CA THROMBOPLASTIN TIME PARTIAL PLASMA/WHOLE BLOOD | $141.68 | $253.00 | 44% | — source file |
| Kaiser Foundation Hospital & Rehab Center - Vallejo Vallejo, CA THROMBOPLASTIN TIME PARTIAL PLASMA/WHOLE BLOOD | $141.68 | $253.00 | 44% | — source file |
| Northbay Medical Center Fairfield, CA Partial Thromboplastin Time | $360.00 | $360.00 | — | Apr 1, 2026 source file |
| Northbay Medical Center Fairfield, CA Partial Thromboplastin Time | $360.00 | $360.00 | — | Apr 1, 2026 source file |
Inpatient: lowest $15.00, median $141.68, highest $360.00 — a 24.0× difference within the same market.
As an outpatient, the same code is billed by 3 facilities here, median $141.68 — that is the price to compare if you are not being admitted.
What it is
The partial thromboplastin time (PTT or aPTT) test measures how long it takes blood to clot through a different pathway than the PT test. It is used to check for bleeding disorders, before surgery, and to monitor heparin.
What the price covers
The price usually covers the PTT test. The blood draw is often billed separately.