Partial thromboplastin time (blood clotting test) in Detroit, MI costs $5 to $84. Here's every hospital's price.
18 hospitals in the Detroit-Warren-Dearborn, MI 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 Detroit-Warren-Dearborn, MI metro area, 18 hospitals list a cash price for partial thromboplastin time (blood clotting test) (CPT 85730). The lowest is $5 at Henry Ford Health Warren Hospital, the median is $27 and the highest is $84 at Huron Valley-Sinai Hospital. The most expensive hospital lists 18 times the cheapest for the same code.
The Detroit, MI median of $27 is 5% below the national median of $28 across 571 US hospitals with a cash price for this code.
15 of these hospitals also publish the rates they negotiated with insurers, from $1 to $68. 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 December 2025 and September 2026. 18 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 onlyWarren · 18 mi · File Jan 2026
Clinton Township · 14 mi · File Jun 2026
Wyandotte · 35 mi · File Jun 2026
W Bloomfield · 16 mi · File Jun 2026
Port Huron · 43 mi · File Dec 2025
Detroit · 27 mi · File Dec 2025
Lapeer · 24 mi · File Dec 2025
Pontiac · 7 mi · File Dec 2025
Mount Clemens · 18 mi · File Dec 2025
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 Detroit, MI without a price for this procedure
Listed so you know who to call. The reason is what we found on their website.
- Ascension Providence Hospital, Southfield and NoviFile found, not read yet
- Ascension Providence Rochester Hospitalcode not in file
- Ascension River District HospitalFile found, not read yet
- Beaumont Hospital - DearbornWebsite blocks automated reading
- Beaumont Hospital - Farmington HillsWebsite blocks automated reading
- Beaumont Hospital - Grosse PointeNo website on record
- Beaumont Hospital - TaylorWebsite blocks automated reading
- Beaumont Hospital Royal OakWebsite blocks automated reading
- Beaumont Hospital, TroyWebsite blocks automated reading
- Corewell Health Trenton HospitalWebsite blocks automated reading
- Corewell Health Wayne HospitalWebsite blocks automated reading
- Henry Ford Health Brighton Center for RecoveryFile found, not read yet
- Henry Ford Health St John HospitalFile found, not read yet
- Southeast Michigan Surgical Hospital LLCWebsite blocks automated reading
- St Joe Mercy Hospital System LivoniaNo price file found
- Straith Hospital for Special Surgerycode not in file
- Trinity Health Livingston HospitalNo price file found
- Trinity Health Oakland HospitalNo price file found