Skip to main content
PricedCare

Partial thromboplastin time (blood clotting test) in San Jose, CA costs $7 to $226. Here's every hospital's price.

5 hospitals in the San Jose-Sunnyvale-Santa Clara, CA 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 Jose-Sunnyvale-Santa Clara, CA metro area, 5 hospitals list a cash price for partial thromboplastin time (blood clotting test) (CPT 85730). The lowest is $7 at El Camino Health, the median is $142 and the highest is $226 at Stanford Health Care. The most expensive hospital lists 32 times the cheapest for the same code.

The San Jose, CA median of $142 is 322% above the national median of $34 across 1627 US hospitals with a cash price for this code.

4 of these hospitals also publish the rates they negotiated with insurers, from $5 to $8,000. 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 April 2026. 3 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.

$7
lowest cash price in San Jose, CA
El Camino Health · 50 mi
$135 below the median
$142
median cash price
5 hospitals
32×
highest ÷ lowest
same procedure, same metro
5/8
hospitals with a cash price
3 don't · see who

Sorted by cash price

Hospital facility fee only
1
El Camino Health

Mountain View · 50 mi · File Apr 2026

$7
list $28 · lowest of 4 lines
2
Lucile Salter Packard Children's Hsp at Stanford

Palo Alto · 57 mi · File Mar 2026

$135
list $269 · lowest of 11 lines
3
Kaiser Foundation Hospital-Santa Clara

Santa Clara · 33 mi · File Apr 2026

$142
list $253 · lowest of 3 lines
4
Kaiser Foundation Hospital-San Jose

San Jose · 33 mi · File Apr 2026

$142
list $253 · lowest of 7 lines
5
Stanford Health Care

Stanford · 56 mi · File Apr 2026

$226
list $564 · lowest of 3 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 Jose, CA 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