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PricedCare

Partial thromboplastin time (blood clotting test) in Chicago, IL-IN costs $5 to $216. Here's every hospital's price.

34 hospitals in the Chicago-Naperville-Elgin, IL-IN 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 Chicago-Naperville-Elgin, IL-IN metro area, 34 hospitals list a cash price for partial thromboplastin time (blood clotting test) (CPT 85730). The lowest is $5 at Uchicago Medicine Adventhealth La Grange, the median is $48 and the highest is $216 at The University of Chicago Medical Center. The most expensive hospital lists 41 times the cheapest for the same code.

The Chicago, IL-IN median of $48 is 67% above the national median of $28 across 571 US hospitals with a cash price for this code.

33 of these hospitals also publish the rates they negotiated with insurers, from $1 to $8,500. 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 January 2025 and August 2026. 46 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.

$5
lowest cash price in Chicago, IL-IN
Uchicago Medicine Adventhealth La Grange · 3 mi
$42 below the median
$48
median cash price
34 hospitals
41×
highest ÷ lowest
same procedure, same metro
34/82
hospitals with a cash price
46 don't · see who

Sorted by cash price

Hospital facility fee only
1
Uchicago Medicine Adventhealth La Grange

La Grange · 3 mi · File Apr 2026

$5
list $21 · lowest of 36 lines
2
Uchicago Medicine Adventhealth Hinsdale

Hinsdale · 5 mi · File Apr 2026

$5
list $21 · lowest of 36 lines
3
Uchicago Medicine Adventhealth Glenoaks

Glendale Heights · 16 mi · File Apr 2026

$5
list $21 · lowest of 36 lines
4
Uchicago Medicine Adventhealth Bolingbrook

Bolingbrook · 14 mi · File Apr 2026

$5
list $21 · lowest of 36 lines
5
Loyola Gottlieb Memorial Hospital

Melrose Park · 10 mi · File Mar 2026

$24
list $128 · lowest of 4 lines
6
Northwestern Medicine Mchenry

Mchenry · 45 mi · File Apr 2026

$28
list $40 · lowest of 22 lines
7
Northwest Community Hospital 1

Arlington Heights · 23 mi · File Mar 2026

$28
list $28 · lowest of 2 lines
8
Loyola University Medical Center

Maywood · 7 mi · File Mar 2026

$29
list $128 · lowest of 4 lines
9
Presence Saint Joseph Hospital - Chicago

Chicago · 16 mi · File Jan 2026

$30
list $91 · lowest of 14 lines
10
OSF Little Company of Mary Medical Center

Evergreen Park · 8 mi · File Mar 2026

$35
list $58 · lowest of 14 lines
11
Morris Hospital & Healthcare Centers

Morris · 40 mi · File Jun 2026

$36
list $149
12
Larabida Childrens Hospital I

Chicago · 15 mi · File Apr 2026

$39
list $39
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 Chicago, IL-IN 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