Prothrombin time (blood clotting test) in Detroit, MI costs $3 to $74. Here's every hospital's price.
22 hospitals in the Detroit-Warren-Dearborn, MI metro area publish a cash price for prothrombin time (blood clotting test) (CPT 85610). We read their files every month so you don't have to.
Across the Detroit-Warren-Dearborn, MI metro area, 22 hospitals list a cash price for prothrombin time (blood clotting test) (CPT 85610). The lowest is $3 at Henry Ford Health St John Hospital, the median is $11 and the highest is $74 at Harper University Hospital. The most expensive hospital lists 23 times the cheapest for the same code.
The Detroit, MI median of $11 is 55% below the national median of $24 across 1629 US hospitals with a cash price for this code.
19 of these hospitals also publish the rates they negotiated with insurers, from $1 to $62. 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. 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.
Sorted by cash price
Hospital facility fee onlyDetroit · 25 mi · File Jan 2026
Warren · 18 mi · File Jan 2026
East China · 37 mi · File Jan 2026
Rochester · 4 mi · File Jan 2026
Clinton Township · 14 mi · File Jun 2026
Detroit · 25 mi · File Jun 2026
Wyandotte · 35 mi · File Jun 2026
W Bloomfield · 16 mi · File Jun 2026
Detroit · 27 mi · File Apr 2026
Detroit · 27 mi · File Apr 2026
What's in the price
The hospital facility fee for CPT 85610. 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 85610, in writing, and whether it covers facility, physician and anesthesia."
About prothrombin time (blood clotting test)
CPT 85610 is a prothrombin time (PT), usually reported with INR. It measures how quickly blood clots and is used to monitor warfarin therapy, to check liver function and before surgery. It is a single blood test.
What the price covers
The laboratory analysis only. The blood draw is a separate small charge. Patients on warfarin often have this test monthly, so the price matters more than it looks; finger-stick INR at an anticoagulation clinic or at home is often cheaper.
Why prices vary
A PT/INR costs a laboratory very little to run, yet hospital list prices range from single digits to well over $100. For recurring tests, independent laboratories and anticoagulation clinics are usually far cheaper than hospital labs.
Questions to ask
- What is the self-pay price for 85610 and the draw fee?
- If I need this monthly, is there a cheaper standing arrangement?
- Can I use a home INR meter instead?
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.
- 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 could not be read
- 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