PTT blood test cost in Louisville, KY
In Louisville/Jefferson County, KY-IN, 17 hospitals list a cash price for partial thromboplastin time (PTT) clotting test: from $18.60 to $172.53, with a median of $95.40. The lowest listed price is at St. Vincent Salem Hospital — $76.80 less than the median here. Across Kentucky, the median is $80.62 at 79 hospitals.
- The median here, $95.40, is 112% above the US median of $45.00.
- That is 15.9× Medicare's 2026 national rate for the same service ($6.01).
- Louisville, KY ranks 2nd of 2 metro areas in Kentucky by median, cheapest first.
- Every hospital here lists a cash price below its full list price.
Cash prices at 17 facilities across 9 cities for code 85730, as an outpatient — the setting a self-pay patient normally buys. Collected Oct 2, 2026; the hospital files themselves were last updated between Jan 1, 2026 and Sep 25, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Louisville/Jefferson County, KY-IN.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| St. Vincent Salem Hospital lowest Salem, IN · (812) 883-5881 #THROMBOPLAST PTT;PLSM/WHL BLD+1 more line at this price File of Jan 1, 2026 · source file | $18.60 | $31.00 | $2.65–$13.70 | 40% |
| Norton Clark Hospital Jeffersonville, IN · (812) 283-2147 HB HEPARIN NEUTRALIZATION PTT+4 more lines at this price File of Jun 3, 2026 · source file | $25.20 | $180.00 | $5.10–$157.50 | 86% |
| Saints Mary & Elizabeth Hospital Louisville, KY THROMBOPLASTIN TIME PARTIAL. File of Jan 1, 2026 · source file | $33.12 | $92.00 | $15.46–$92.00 | 64% |
| UofL Health -Shelbyville Shelbyville, KY · (502) 647-4000 THROMBOPLASTIN TIME PARTIAL File of Jan 1, 2026 · source file | $33.82 | $89.00 | $11.92–$89.00 | 62% |
| University of Louisville Hospital Louisville, KY · (502) 562-3000 THROMBOPLASTIN TIME PARTIAL. File of Jan 1, 2026 · source file | $48.72 | $203.00 | $34.10–$203.00 | 76% |
| UofL Health-Louisville – South Hospital Shepherdville, KY THROMBOPLASTIN TIME PARTIAL File of Jan 1, 2026 · source file | $52.65 | $117.00 | $19.66–$117.00 | 55% |
| UofL Health - Jewish Hospital and Mary & Elizabeth Hospital Louisville, KY · (502) 587-4011 THROMBOPLASTIN TIME PARTIAL File of Jan 1, 2026 · source file | $55.35 | $123.00 | $20.66–$123.00 | 55% |
| CHI Saint Joseph Flaget Memorial Hospital Bardstown, KY · (502) 350-5000 HC LAB PTT File of Feb 28, 2026 · source file | $80.62 | $190.00 | $5.10–$172.90 | 58% |
| Norton Women's and Kosair Children's Hospital Louisville, KY HB PTT ACTIVATED+4 more lines at this price File of Feb 13, 2026 · source file | $95.40 | $477.00 | $6.01–$395.91 | 80% |
| Norton West Louisville Hospital Louisville, KY HB HEPARIN NEUTRALIZATION PTT+4 more lines at this price File of Feb 11, 2026 · source file | $95.40 | $477.00 | $6.01–$395.91 | 80% |
| Norton Children's Hospital Louisville, KY HB PTT ACTIVATED+4 more lines at this price File of Feb 11, 2026 · source file | $95.40 | $477.00 | $6.01–$405.45 | 80% |
| Norton Hospital Louisville, KY · (502) 629-8000 HB HEPARIN NEUTRALIZATION PTT+4 more lines at this price File of Feb 11, 2026 · source file | $95.40 | $477.00 | $6.01–$395.91 | 80% |
| Norton Brownsboro Hospital Louisville, KY HB HEPARIN NEUTRALIZATION PTT+4 more lines at this price File of Feb 11, 2026 · source file | $95.40 | $477.00 | $6.01–$395.91 | 80% |
| Harrison County Hospital Corydon, IN · (812) 738-4251 Coagulation assessment blood test, plasma or whole blood File of Jul 16, 2026 · source file | $115.20 | $192.00 | $3.01–$172.80 | 40% |
| St. Vincent Salem Hospital Salem, IN · (812) 883-5881 THROMBOPLASTIN TIME PTT;PLASMA+1 more line at this price File of Jan 1, 2026 · source file | $120.60 | $201.00 | $2.65–$13.70 | 40% |
| Baptist Health LaGrange La Grange, KY · (502) 222-5388 Coagulation assessment blood test, plasma or whole blood File of Sep 25, 2026 · source file | $172.53 | $230.04 | $5.10–$460.08 | 25% |
| Baptist Health Louisville Louisville, KY · (502) 897-8100 Coagulation assessment blood test, plasma or whole blood File of Sep 25, 2026 · source file | $172.53 | $230.04 | $3.61–$460.08 | 25% |
| Baptist Health Floyd New Albany, IN · (812) 944-7701 Coagulation assessment blood test, plasma or whole blood File of Sep 25, 2026 · source file | $172.53 | $230.04 | $5.10–$345.06 | 25% |
Outpatient: lowest $18.60, median $95.40, highest $172.53 — a 9.3× difference within the same market.
As an inpatient, the same code is billed by 13 facilities here, median $55.35. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
Cash or insurance?
At 16 of 17 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at none is it below every plan's rate. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.
What PTT blood test is, what the price covers and why prices differ: PTT blood test explained.