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PricedCare

Partial thromboplastin time (blood clotting test) in St. Louis, MO-IL costs $11 to $121. Here's every hospital's price.

18 hospitals in the St. Louis, MO-IL metro area publish a cash price for partial thromboplastin time (blood clotting test) (CPT 85730). We read their files every month so you don't have to.

Across the St. Louis, MO-IL metro area, 18 hospitals list a cash price for partial thromboplastin time (blood clotting test) (CPT 85730). The lowest is $11 at Ssm St Joseph Hospital West, the median is $27 and the highest is $121 at Hshs Holy Family Hospital INC. The most expensive hospital lists 11 times the cheapest for the same code.

The St. Louis, MO-IL median of $27 is 6% below the national median of $28 across 571 US hospitals with a cash price for this code.

17 of these hospitals also publish the rates they negotiated with insurers, from $3 to $168. With insurance you pay a share of the negotiated rate, which is sometimes higher than the cash price; you may ask for the cash price instead.

The files behind these prices are dated between March 2026 and June 2026. 18 other hospitals in the metro area have no readable price for this code: some publish no file, some block automated reading, some leave the code out. They are listed below so you can call them.

$11
lowest cash price in St. Louis, MO-IL
Ssm St Joseph Hospital West · 24 mi
$16 below the median
$27
median cash price
18 hospitals
11×
highest ÷ lowest
same procedure, same metro
18/36
hospitals with a cash price
18 don't · see who

Sorted by cash price

Hospital facility fee only
1
Ssm St Joseph Hospital West

Lake Saint Louis · 24 mi · File Apr 2026

$11
list $20 · lowest of 7 lines
2
Ssm Health Saint Louis University Hospital

Saint Louis · 10 mi · File Apr 2026

$14
list $25 · lowest of 5 lines
3
Mercy Hospital South

Saint Louis · 16 mi · File Mar 2026

$21
list $21 · lowest of 2 lines
4
Ssm St Joseph Health Center

Saint Charles · 8 mi · File Apr 2026

$21
list $38 · lowest of 7 lines
5
Ssm St Clare Health Center

Fenton · 16 mi · File Apr 2026

$21
list $38 · lowest of 7 lines
6
Ssm Health St Mary's Hospital - St Louis

Saint Louis · 8 mi · File Apr 2026

$21
list $38 · lowest of 7 lines
7
Ssm Health Depaul Hospital St Louis

Bridgeton · 5 mi · File Apr 2026

$21
list $38 · lowest of 7 lines
8
Ranken Jordan Pediatric Bridge Hospital

Maryland Heights · 4 mi · File Apr 2026

$26
list $32 · lowest of 4 lines
9
Mercy Hospital Jefferson

Crystal City · 38 mi · File Jun 2026

$27
list $41 · lowest of 2 lines
10
OSF Saint Anthony's Health Center

Alton · 15 mi · File Mar 2026

$37
list $61 · lowest of 4 lines
11
Touchette Regional Hospital INC

Centreville · 17 mi · File Apr 2026

$41
list $67
12
Shriners Hospitals for Children

Saint Louis · 9 mi · File Mar 2026

$47
list $47
1

What's in the price

The hospital facility fee for CPT 85730. The doctor, anesthesia and lab work usually bill separately.

2

Cash vs. insured

Cash is what you pay without insurance. With insurance you pay a share of the negotiated rate, which can be higher than cash. You may ask for the cash price.

3

What to say on the phone

"I'd like the self-pay price for CPT 85730, in writing, and whether it covers facility, physician and anesthesia."

About partial thromboplastin time (blood clotting test)

CPT 85730 is a partial thromboplastin time (PTT or aPTT), a clotting test that checks a different part of the clotting cascade from prothrombin time. It is used to monitor heparin, to investigate unexplained bleeding or bruising, and before surgery. One blood draw.

What the price covers

The laboratory analysis only. The blood draw is a separate small charge. It is often ordered together with prothrombin time (85610); the two are separate codes and separate prices.

Why prices vary

The test runs on automated coagulation analyzers and costs a laboratory a few dollars. Hospital list prices range from under $10 to over $150 for the same result. Independent laboratories are typically far cheaper.

Questions to ask

  • What is the self-pay price for 85730, and is PT (85610) also being billed?
  • Is the blood draw extra?
  • Can the sample be sent to an outside laboratory?

Hospitals in St. Louis, MO-IL without a price for this procedure

Listed so you know who to call. The reason is what we found on their website.

Questions people ask