SelfPayRates — hospital cash prices, from the source

Prothrombin time (PT/INR) clotting test in Santa Rosa-Petaluma, CA

Cash prices at 4 facilities across 3 cities for code 85610, 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.

HospitalCash price List priceOffFile date
NorCal HealthConnect LLC PETALUMA, CA
HC PROTHROMBIN TIME LAB
$19.38 $38.00 49% Apr 1, 2026
file
NorCal HealthConnect LLC PETALUMA, CA
HC PROTHROMBIN TIME
$20.40 $40.00 49% Apr 1, 2026
file
NorCal HealthConnect LLC HEALDSBURG, CA
HC PROTHROMBIN TIME LAB
$25.50 $50.00 49% Apr 1, 2026
file
NorCal HealthConnect LLC HEALDSBURG, CA
HC PROTHROMBIN TIME 85610
$25.50 $50.00 49% Apr 1, 2026
file
NorCal HealthConnect LLC HEALDSBURG, CA
HC PROTHROMBIN TIME CDM
$25.50 $50.00 49% Apr 1, 2026
file
St Joseph Health Northern California LLC SANTA ROSA, CA
HC PROTHROMBIN TIME LAB
$32.64 $64.00 49% Apr 1, 2026
file
NorCal HealthConnect LLC PETALUMA, CA
HC PROTHROMBIN TIME LAB
$35.53 $69.67 49% Apr 1, 2026
file
St Joseph Health Northern California LLC SANTA ROSA, CA
HC PROTHROMBIN TIME LAB
$35.53 $69.67 49% Apr 1, 2026
file
St Joseph Health Northern California LLC SANTA ROSA, CA
HC PROTHROMBIN TIME
$40.29 $79.00 49% Apr 1, 2026
file
KAISER FOUNDATION HOSPITAL - SANTA ROSA SANTA ROSA, CA
PROTHROMBIN TIME
$89.60 $160.00 44%
file
NorCal HealthConnect LLC PETALUMA, CA
HC PROTHROMBIN TIME
$118.32 $232.00 49% Apr 1, 2026
file
St Joseph Health Northern California LLC SANTA ROSA, CA
HC PROTHROMBIN TIME
$170.85 $335.00 49% Apr 1, 2026
file

Outpatient: lowest $19.38, median $34.09, highest $170.85 — a 8.8× difference within the same market.

As an inpatient, the same code is billed by 4 facilities here, median $35.53. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.

Other markets for this procedure