Partial thromboplastin time (blood clotting test) in San Diego, CA costs $2 to $9. Here's every hospital's price.
5 hospitals in the San Diego-Chula Vista-Carlsbad, 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 Diego-Chula Vista-Carlsbad, CA metro area, 5 hospitals list a cash price for partial thromboplastin time (blood clotting test) (CPT 85730). The lowest is $2 at Tri-City Medical Center, the median is $9 and the highest is $9 at Sharp Coronado Hospital and Hlthcr Ctr. The most expensive hospital lists 3.4 times the cheapest for the same code.
The San Diego, CA median of $9 is 70% below the national median of $29 across 581 US hospitals with a cash price for this code.
5 of these hospitals also publish the rates they negotiated with insurers, from $1 to $626. 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 April 2026 and September 2026. 11 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.
Sorted by cash price
Hospital facility fee onlyOceanside · 32 mi · File May 2026
National City · 29 mi · File Sep 2026
La Mesa · 22 mi · File Apr 2026
Chula Vista · 31 mi · File Apr 2026
Coronado · 32 mi · File Apr 2026
What's in the price
The hospital facility fee for CPT 85730. The doctor, anesthesia and lab work usually bill separately.
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.
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 Diego, CA without a price for this procedure
Listed so you know who to call. The reason is what we found on their website.
- Kaiser Foundation Hospital - San DiegoNo price file found
- Kaiser Foundation Hospital - San MarcosNo website on record
- Palomar Health Downtown CampusWebsite blocks automated reading
- Palomar Medical Center PowayWebsite blocks automated reading
- Rady Children's Hospital - San DiegoFile in an unsupported format
- Scripps Green HospitalFile found, not read yet
- Scripps Memorial Hospital - EncinitasFile found, not read yet
- Scripps Memorial Hospital La JollaFile found, not read yet
- Scripps Mercy HospitalFile found, not read yet
- Sharp Memorial HospitalFile found, not read yet
- UC San Diego Health Hillcrest - Hillcrest Med CtrNo price file found