Partial thromboplastin time (PTT) clotting test in Eureka-Arcata, CA
In Eureka-Arcata, CA, 2 hospitals list a cash price for Partial thromboplastin time (PTT) clotting test: from $22.95 to $76.34, with a median of $39.27. The lowest listed price is at St Joseph Health Northern California LLC.
Cash prices at 2 facilities across 2 cities for code 85730, 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 Fortuna, CA HC THROMBOPLASTIN TIME PARTIAL PLASMA/WHOLE BLOOD CDM | $22.95 | $45.00 | 49% | Apr 1, 2026 source file |
| St Joseph Health Northern California LLC Eureka, CA HC THROMBOPLASTIN TIME PARTIAL PLASMA/WHOLE BLOOD CDM | $22.95 | $45.00 | 49% | Apr 1, 2026 source file |
| St Joseph Health Northern California LLC Eureka, CA HC THROMBOPLASTIN TIME PARTIAL PLASMA/WHOLE BLOOD LAB | $35.54 | $69.68 | 49% | Apr 1, 2026 source file |
| St Joseph Health Northern California LLC Fortuna, CA HC THROMBOPLASTIN TIME PARTIAL PLASMA/WHOLE BLOOD LAB | $35.54 | $69.68 | 49% | Apr 1, 2026 source file |
| St Joseph Health Northern California LLC Eureka, CA HC THROMBOPLASTIN TIME PARTIAL | $39.27 | $77.00 | 49% | Apr 1, 2026 source file |
| St Joseph Health Northern California LLC Eureka, CA HC THROMBOPLASTIN TIME PARTIAL PLASMA/WHOLE BLOOD LAB | $39.27 | $77.00 | 49% | Apr 1, 2026 source file |
| St Joseph Health Northern California LLC Fortuna, CA HC THROMBOPLASTIN TIME PARTIAL PLASMA/WHOLE BLOOD LAB | $43.86 | $86.00 | 49% | Apr 1, 2026 source file |
| St Joseph Health Northern California LLC Fortuna, CA HC THROMBOPLASTIN TIME PARTIAL | $43.86 | $86.00 | 49% | Apr 1, 2026 source file |
| St Joseph Health Northern California LLC Eureka, CA HC THROMBOPLASTIN TIME PARTIAL | $76.34 | $149.69 | 49% | Apr 1, 2026 source file |
| St Joseph Health Northern California LLC Fortuna, CA HC THROMBOPLASTIN TIME PARTIAL | $76.34 | $149.69 | 49% | Apr 1, 2026 source file |
Outpatient: lowest $22.95, median $39.27, highest $76.34 — a 3.3× difference within the same market.
As an inpatient, the same code is billed by 2 facilities here, median $35.54. 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 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.