Posted Price

Prothrombin time (PT/INR), clotting test at HCA Houston Healthcare Northwest

CPT 85610 · Houston, TX

Cash price$935.22
Gross charge$935.22
Insurer rates$56.11 – $794.94

These are HCA Houston Healthcare Northwest's own posted figures from its standard-charges file dated September 1, 2026. They are not a quote. Source: the hospital's file · its price transparency page.

The posted cash price equals the gross charge: this file shows no self-pay discount for this service.

Across 111 Texas hospitals we index that post a cash price for this service: lowest $4.20, median $119.10, highest $935.22. See every hospital.

Nearby hospitals, same service

HospitalDistanceCash priceGross chargeFile date
Houston Methodist Willowbrook Hospital
Houston, TX
8.3 mi$134.50$269.002026-04-01
St. Luke's Hospital at the Vintage
Houston, TX
8.3 mi$178.15$509.002026-02-28
Memorial Hermann Northeast Hospital
Humble, TX
9.4 mi$29.60$92.502026-04-01
HCA Houston Healthcare Tomball
Tomball, TX
10.6 mi$686.97$686.972026-09-01
Houston Methodist the Woodlands Hospital
The Woodlands, TX
12.3 mi$134.50$269.002026-04-01
Houston Methodist Cypress Hospital
Cypress, TX
13.5 mi$134.50$269.002026-04-01
Memorial Hermann Hospital System
Houston, TX
14.6 mi$29.60$92.502026-04-01
St. Luke's the Woodlands Hospital
The Woodlands, TX
15.9 mi$178.15$509.002026-02-28

Distances are straight-line from ZIP code centers. Each hospital's figures come from its own file; files are updated on different dates.

Every row for CPT 85610 in this hospital's file

Row in the hospital's fileSettingCashGrossInsurer min – max
PROTIME
standard_charge_information[200807]
outpatient$935.22$935.22$56.11 – $794.94
Prothrombin time;
standard_charge_information[5318]
outpatient$18.14 – $23.38
Prothrombin time;
standard_charge_information[5567]
outpatient$3.67 – $23.38
Prothrombin time;
standard_charge_information[15844]
outpatient$3.60 – $29.50
Prothrombin time;
standard_charge_information[116761]
outpatient$3.67 – $3.67
PROTIME
standard_charge_information[204109]
outpatient$687.28$687.28$41.24 – $584.19

The first row is the one used above. A price for one code usually covers the hospital's facility charge only; the doctor, anesthesia, pathology and other services can be billed separately. Ask the hospital for a good faith estimate before a scheduled service: if you pay yourself and the bill comes in $400 or more above the estimate, you can dispute it under the No Surprises Act.

Check a bill from this hospital All HCA Houston Healthcare Northwest prices