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PricedCare

Partial thromboplastin time (blood clotting test) in Seattle, WA costs $6 to $90. Here's every hospital's price.

13 hospitals in the Seattle-Tacoma-Bellevue, WA 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 Seattle-Tacoma-Bellevue, WA metro area, 13 hospitals list a cash price for partial thromboplastin time (blood clotting test) (CPT 85730). The lowest is $6 at Overlake Hospital Medical Center & Clinics, the median is $29 and the highest is $90 at Valley Medical Center. The most expensive hospital lists 15 times the cheapest for the same code.

The Seattle, WA median of $29 is in line with the national median of $28 across 571 US hospitals with a cash price for this code.

13 of these hospitals also publish the rates they negotiated with insurers, from $4 to $763. 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 2026 and April 2026. 14 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.

$6
lowest cash price in Seattle, WA
Overlake Hospital Medical Center & Clinics · 19 mi
$23 below the median
$29
median cash price
13 hospitals
15×
highest ÷ lowest
same procedure, same metro
13/27
hospitals with a cash price
14 don't · see who

Sorted by cash price

Hospital facility fee only
1
Overlake Hospital Medical Center & Clinics

Bellevue · 19 mi · File Apr 2026

$6
list $12 · lowest of 9 lines
2
St Clare Hospital

Lakewood · 39 mi · File Feb 2026

$24
list $82 · lowest of 2 lines
3
St Anthony Hospital

Gig Harbor · 38 mi · File Feb 2026

$25
list $82 · lowest of 2 lines
4
Highline Medical Center

Burien · 24 mi · File Feb 2026

$25
list $82 · lowest of 2 lines
5
St Francis Community Hospital

Federal Way · 27 mi · File Feb 2026

$26
list $82 · lowest of 2 lines
6
St Joseph Medical Center

Tacoma · 33 mi · File Feb 2026

$27
list $82 · lowest of 2 lines
7
St Elizabeth Hospital

Enumclaw · 21 mi · File Feb 2026

$29
list $82 · lowest of 2 lines
8
Virginia Mason Medical Center

Seattle · 24 mi · File Jan 2026

$36
list $70 · lowest of 2 lines
9
Swedish Medical Center / Cherry Hill

Seattle · 24 mi · File Apr 2026

$36
list $75 · lowest of 11 lines
10
Swedish Issaquah

Issaquah · 9 mi · File Apr 2026

$36
list $75 · lowest of 11 lines
11
Providence Regional Medical Center Everett

Everett · 39 mi · File Apr 2026

$41
list $79 · lowest of 18 lines
12
Cascade Valley Hospital

Arlington · 50 mi · File Mar 2026

$65
list $81
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 Seattle, WA 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