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PricedCare

Partial thromboplastin time (blood clotting test) in San Antonio, TX costs $19 to $95. Here's every hospital's price.

3 hospitals in the San Antonio-New Braunfels, TX 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 San Antonio-New Braunfels, TX metro area, 3 hospitals list a cash price for partial thromboplastin time (blood clotting test) (CPT 85730). The lowest is $19 at Legent Orthopedic + Spine, the median is $19 and the highest is $95 at South Texas Spine and Surgical Hospital. The most expensive hospital lists 5.1 times the cheapest for the same code.

The San Antonio, TX median of $19 is 34% below the national median of $29 across 581 US hospitals with a cash price for this code.

3 of these hospitals also publish the rates they negotiated with insurers, from $2 to $1,026. 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 February 2026 and May 2026. 16 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.

$19
lowest cash price in San Antonio, TX
Legent Orthopedic + Spine · 9 mi
$0 below the median
$19
median cash price
3 hospitals
5.1×
highest ÷ lowest
same procedure, same metro
3/19
hospitals with a cash price
16 don't · see who

Sorted by cash price

Hospital facility fee only
1
Legent Orthopedic + Spine

San Antonio · 9 mi · File Mar 2026

$19
list $37 · lowest of 2 lines
2
Guadalupe Regional Medical Center

Seguin · 41 mi · File May 2026

$19
list $38 · lowest of 6 lines
3
South Texas Spine and Surgical Hospital

San Antonio · 15 mi · File Feb 2026

$95
list $95 · lowest of 2 lines
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 San Antonio, TX 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