SelfPayRates — hospital cash prices, from the source

Partial thromboplastin time (PTT) clotting test in St. Louis, MO-IL

Cash prices at 11 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 — and —.

HospitalCash price List priceOffFile date
Mercy Hospitals East Communities dba Mercy Hospital St Louis SAINT LOUIS, MO
Ptt Mixing
$21.45 $33.00 35%
file
Mercy Hospital South SAINT LOUIS, MO
Ptt Partial Thromboplastin Time
$26.65 $41.00 35%
file
Mercy Hospital Jefferson FESTUS, MO
Ptt Partial Thromboplastin Time
$26.65 $41.00 35%
file
Mercy Hospitals East Communities dba Mercy Hospital St Louis SAINT LOUIS, MO
Ptt Partial Thromboplastin Time
$26.65 $41.00 35%
file
AMERICAN HEALTHCARE SYSTEMS ILLINOIS LLC GRANITE CITY, IL
THROMBOPLAST TIMEPTT
$35.36 $58.94 40%
file
Shriners Childrens - St Louis SAINT LOUIS, MO
COAGULATION ASSESSMENT BLOOD TEST; PLASMA OR WHOLE BLOOD
$47.20 $47.20
file
Mercy Hospitals East Communities dba Mercy Hospital Washington WASHINGTON, MO
Ptt Partial Thromboplastin Time
$59.80 $92.00 35%
file
Mercy Hospital South SAINT LOUIS, MO
Ptt Mixing
$69.55 $107.00 35%
file
Mercy Hospitals East Communities dba Mercy Hospital Washington WASHINGTON, MO
Ptt Mixing
$70.85 $109.00 35%
file
ST ELIZABETHS HOSPITAL OF THE HOSPITAL SISTERS OF THE THIRD ORDER OF ST FRANCIS O'FALLON, IL
THROMBOPLASTIN TIME PARTIAL
$78.48 $109.00 28%
file
Mercy Hospital Lincoln TROY, MO
Ptt Mixing
$78.65 $121.00 35%
file
Mercy Hospital Lincoln TROY, MO
Ptt Partial Thromboplastin Time
$78.65 $121.00 35%
file
ST JOSEPHS HOSPITAL HOSPITAL SISTERS THIRD ORDER OF ST FRANCIS BREESE, IL
THROMBOPLASTIN TIME PARTIAL
$79.20 $110.00 28%
file
Mercy Hospital Jefferson FESTUS, MO
Ptt Mixing
$94.90 $146.00 35%
file
Hshs Holy Family Hospital Inc GREENVILLE, IL
THROMBOPLASTIN TIME PARTIAL
$120.96 $168.00 28%
file
ST JOSEPHS HOSPITAL OF THE HOSPITAL SISTERS OF THE THIRD ORDER OF ST FRANCIS HIGHLAND, IL
THROMBOPLASTIN TIME PARTIAL
$164.88 $229.00 28%
file

Outpatient: lowest $21.45, median $70.20, highest $164.88 — a 7.7× difference within the same market.

As an inpatient, the same code is billed by 7 facilities here, median $79.20. 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