Partial thromboplastin time (PTT) clotting test in Houston-Pasadena-The Woodlands, TX
In Houston-Pasadena-The Woodlands, TX, 14 hospitals list a cash price for Partial thromboplastin time (PTT) clotting test: from $5.89 to $169.50, with a median of $106.53. The lowest listed price is at Hsa St. Joseph LLC.
Cash prices at 14 facilities across 9 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 Mar 5, 2026 and Sep 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 Houston-Pasadena-The Woodlands, TX.
Hospitals, cheapest first
| Hospital | Cash price | List price | Off list | File date |
|---|---|---|---|---|
| Hsa St. Joseph LLC lowest Houston, TX RL PTT (LAC) | $5.89 | $253.28 | 98% | Sep 1, 2026 source file |
| Hsa St. Joseph LLC Houston, TX PTT; PLASMA OR WHOLE BLOOD. | $5.89 | $253.28 | 98% | Sep 1, 2026 source file |
| Harris Health Houston, TX COAG PARTIAL THROMBOPLASTIN (PTT) | $6.01 | $135.00 | 96% | — source file |
| Harris Health Taub Loop Houston, TX PTT; PLASMA OR WHOLE BLOOD, LUPUS | $6.01 | $18.00 | 67% | — source file |
| Harris Health Taub Loop Houston, TX COAG PARTIAL THROMBOPLASTIN (PTT) | $6.01 | $135.00 | 96% | — source file |
| Harris Health Houston, TX PTT; PLASMA OR WHOLE BLOOD, LUPUS | $6.01 | $18.00 | 67% | — source file |
| Houston Methodist Baytown Hospital Baytown, TX HC PTT HEPZYME TOTAL | $35.00 | $70.00 | 50% | Apr 1, 2026 source file |
| Houston Methodist Continuing Care Hospital Katy, TX HC PTT HEPZYME TOTAL | $35.00 | $70.00 | 50% | Apr 1, 2026 source file |
| Houston Methodist Cypress Hospital Cypress, TX HC PTT HEPZYME TOTAL | $35.00 | $70.00 | 50% | Apr 1, 2026 source file |
| Methodist Willowbrook Hospital Houston, TX HC PTT HEPZYME TOTAL | $35.00 | $70.00 | 50% | Apr 1, 2026 source file |
| Houston Methodist Clear Lake Hospital Nassau Bay, TX HC PTT HEPZYME TOTAL | $35.00 | $70.00 | 50% | Apr 1, 2026 source file |
| Methodist West Houston Hospital Houston, TX HC PTT HEPZYME TOTAL | $35.00 | $70.00 | 50% | Apr 1, 2026 source file |
| Methodist Sugar Land Hospital Sugar Land, TX HC PTT HEPZYME TOTAL | $35.00 | $70.00 | 50% | Apr 1, 2026 source file |
| The Methodist Hospital Houston, TX HC PTT HEPZYME TOTAL | $35.00 | $70.00 | 50% | Apr 1, 2026 source file |
| Houston Methodist The Woodlands Hospital The Woodlands, TX HC PTT HEPZYME TOTAL | $35.00 | $70.00 | 50% | Apr 1, 2026 source file |
| Shriners Childrens Texas Galveston, TX COAGULATION ASSESSMENT BLOOD TEST; PLASMA OR WHOLE BLOOD | $45.00 | $45.00 | — | — source file |
| Texas Children's Hospital Houston, TX TC PARTIAL THROMBOPLASTIN TIME | $106.53 | $159.00 | 33% | Mar 5, 2026 source file |
| Texas Children's Hospital Houston, TX TC PARTIAL THROMBOPLASTIN TIME | $106.53 | $159.00 | 33% | Mar 5, 2026 source file |
| Texas Children's Hospital Houston, TX TC PARTIAL THROMBOPLASTIN TIME | $106.53 | $159.00 | 33% | Mar 5, 2026 source file |
| Houston Methodist Baytown Hospital Baytown, TX HC PTT LA | $160.50 | $321.00 | 50% | Apr 1, 2026 source file |
| Houston Methodist Cypress Hospital Cypress, TX HC PTT LUPUS ANTICOAG | $160.50 | $321.00 | 50% | Apr 1, 2026 source file |
| Houston Methodist Cypress Hospital Cypress, TX HC PTT LA | $160.50 | $321.00 | 50% | Apr 1, 2026 source file |
| Houston Methodist Continuing Care Hospital Katy, TX HC PTT LUPUS ANTICOAG | $160.50 | $321.00 | 50% | Apr 1, 2026 source file |
| Houston Methodist Baytown Hospital Baytown, TX HC PTT LUPUS ANTICOAG | $160.50 | $321.00 | 50% | Apr 1, 2026 source file |
| Houston Methodist The Woodlands Hospital The Woodlands, TX HC PTT LUPUS ANTICOAG | $160.50 | $321.00 | 50% | Apr 1, 2026 source file |
| Houston Methodist The Woodlands Hospital The Woodlands, TX HC PTT LA | $160.50 | $321.00 | 50% | Apr 1, 2026 source file |
| Houston Methodist Clear Lake Hospital Nassau Bay, TX HC PTT LA | $160.50 | $321.00 | 50% | Apr 1, 2026 source file |
| Methodist Sugar Land Hospital Sugar Land, TX HC PTT LUPUS ANTICOAG | $160.50 | $321.00 | 50% | Apr 1, 2026 source file |
| Methodist Sugar Land Hospital Sugar Land, TX HC PTT LA | $160.50 | $321.00 | 50% | Apr 1, 2026 source file |
| Houston Methodist Clear Lake Hospital Nassau Bay, TX HC PTT LUPUS ANTICOAG | $160.50 | $321.00 | 50% | Apr 1, 2026 source file |
| Methodist West Houston Hospital Houston, TX HC PTT LUPUS ANTICOAG | $160.50 | $321.00 | 50% | Apr 1, 2026 source file |
| Methodist West Houston Hospital Houston, TX HC PTT LA | $160.50 | $321.00 | 50% | Apr 1, 2026 source file |
| Houston Methodist Continuing Care Hospital Katy, TX HC PTT LA | $160.50 | $321.00 | 50% | Apr 1, 2026 source file |
| Methodist Willowbrook Hospital Houston, TX HC PTT LUPUS ANTICOAG | $160.50 | $321.00 | 50% | Apr 1, 2026 source file |
| Methodist Willowbrook Hospital Houston, TX HC PTT LA | $160.50 | $321.00 | 50% | Apr 1, 2026 source file |
| The Methodist Hospital Houston, TX HC PTT LUPUS ANTICOAG | $169.50 | $339.00 | 50% | Apr 1, 2026 source file |
| The Methodist Hospital Houston, TX HC PTT LA | $169.50 | $339.00 | 50% | Apr 1, 2026 source file |
Outpatient: lowest $5.89, median $106.53, highest $169.50 — a 28.8× difference within the same market.
As an inpatient, the same code is billed by 12 facilities here, median $160.50. 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.