Partial thromboplastin time (PTT) clotting test in Baltimore-Columbia-Towson, MD
In Baltimore-Columbia-Towson, MD, 3 hospitals list a cash price for Partial thromboplastin time (PTT) clotting test: from $14.54 to $29.56, with a median of $25.66. The lowest listed price is at Greater Baltimore Medical Center.
Cash prices at 3 facilities across 2 cities for code 85730, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 22, 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 Baltimore-Columbia-Towson, MD.
Hospitals, cheapest first
| Hospital | Cash price | List price | Off list | File date |
|---|---|---|---|---|
| Greater Baltimore Medical Center lowest Towson, MD HC Partial Thromboplast | $14.54 | $14.84 | 2% | — source file |
| Mercy Medical Center, Inc. Baltimore, MD HC THROMBOPLAS TIME PARTIAL | $25.66 | $26.18 | 2% | — source file |
| Mercy Medical Center, Inc. Baltimore, MD HC THROMBOPLAS TIME PARTIAL REF | $25.66 | $26.18 | 2% | — source file |
| Mt. Washington Pediatric Hospital Baltimore, MD PARTIAL THROMBOPLAS TIME | $29.56 | $30.16 | 2% | — source file |
Outpatient: lowest $14.54, median $25.66, highest $29.56 — a 2.0× difference within the same market.
As an inpatient, the same code is billed by 3 facilities here, median $25.66. 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.