Partial thromboplastin time (PTT) clotting test in Boston-Cambridge-Newton, MA-NH
In Boston-Cambridge-Newton, MA-NH, 8 hospitals list a cash price for Partial thromboplastin time (PTT) clotting test: from $10.08 to $58.20, with a median of $14.70. The lowest listed price is at Boston Medical Center South.
Cash prices at 8 facilities across 5 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 — and —.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Boston-Cambridge-Newton, MA-NH.
Hospitals, cheapest first
| Hospital | Cash price | List price | Off list | File date |
|---|---|---|---|---|
| Boston Medical Center South lowest Brockton, MA HC Chg Thromboplastin Time Partial Plasma/Whole Blood | $10.08 | $22.40 | 55% | — source file |
| Boston Medical Center Brighton Boston, MA HC Chg Thromboplastin Time Partial Plasma/Whole Blood | $11.46 | $25.47 | 55% | — source file |
| Lowell General Hospital Lowell, MA HC Thromboplas Time Partial - Aptt | $14.70 | $21.00 | 30% | — source file |
| Melrosewakefield Healthcare Melrose, MA HC Thromboplas Time Partial - Aptt | $14.70 | $21.00 | 30% | — source file |
| Lowell General Hospital Lowell, MA HC Thromboplas Time Partial - Ptt Crrt System | $14.70 | $21.00 | 30% | — source file |
| Melrosewakefield Healthcare Melrose, MA HC Thromboplas Time Partial - Ptt Crrt System | $14.70 | $21.00 | 30% | — source file |
| Tufts Medical Center Boston, MA HC Thromboplas Time Partial - Aptt | $14.70 | $21.00 | 30% | — source file |
| Boston Medical Center Boston, MA HC Chg Thromboplastin Time Partial Plasma/Whole Blood | $20.70 | $46.00 | 55% | — source file |
| Boston Medical Center Boston, MA HC Chg Thromboplastin Time Partial Plasma/Whole Blood POC | $20.70 | $46.00 | 55% | — source file |
| Cambridge Health Alliance Cambridge, MA HC Partial Thromboplastin | $36.00 | $36.00 | — | — source file |
| Cambridge Health Alliance Cambridge, MA HC Partial Thromboplastin So | $36.00 | $36.00 | — | — source file |
| Shriners Childrens - Boston Boston, MA COAGULATION ASSESSMENT BLOOD TEST; PLASMA OR WHOLE BLOOD | $58.20 | $58.20 | — | — source file |
Outpatient: lowest $10.08, median $14.70, highest $58.20 — a 5.8× difference within the same market.
As an inpatient, the same code is billed by 7 facilities here, median $14.70. 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.