PTT blood test cost in Chicago, IL
In Chicago-Naperville-Elgin, IL-IN, 61 hospitals list a cash price for partial thromboplastin time (PTT) clotting test: from $5.25 to $216.00, with a median of $50.00. The lowest listed price is at Uchicago Medicine AdventHealth Glenoaks and 3 other hospitals — $44.75 less than the median here. Across Illinois, the median is $65.10 at 113 hospitals.
- The median here, $50.00, is 11% above the US median of $45.00.
- That is 8.3× Medicare's 2026 national rate for the same service ($6.01).
- 12 of 61 hospitals list a cash price equal to their full list price, with no self-pay discount.
Cash prices at 61 facilities across 44 cities for code 85730, as an outpatient — the setting a self-pay patient normally buys. Collected Nov 6, 2026; the hospital files themselves were last updated between Jan 1, 2025 and Nov 3, 2026.
Lowest$5.25Uchicago Medicine AdventHealth Glenoaks + 3 more
Median$50.00half of hospitals charge less
Highest$216.00in this market
Difference41.1×highest vs lowest
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Chicago-Naperville-Elgin, IL-IN.
median
Lowest $5.25Highest $216.00
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Uchicago Medicine AdventHealth Glenoaks lowest Glendale Heights, IL · (630) 545-8000 HC APTT - INHIBITOR ASSAY PTT WITH REFLEX (ARUP)+8 more lines at this price File of Apr 1, 2026 · source file | $5.25 | $21.00 | — | 75% |
| Uchicago Medicine AdventHealth Bolingbrook lowest Bolingbrook, IL · (630) 312-5000 HC THROMBOPLAS TIME PARTIAL - PTT CRRT SYSTEM+8 more lines at this price File of Apr 1, 2026 · source file | $5.25 | $21.00 | — | 75% |
| Uchicago Medicine AdventHealth Hinsdale lowest Hinsdale, IL · (630) 856-9000 HC APTT - ANTIPHOSPHOLIPID SYNDROME REFLEX PANEL - ARUP+8 more lines at this price File of Apr 1, 2026 · source file | $5.25 | $21.00 | — | 75% |
| Uchicago Medicine AdventHealth La Grange lowest La Grange, IL · (708) 352-1200 HC APTT - ANTIPHOSPHOLIPID SYNDROME REFLEX PANEL - ARUP+8 more lines at this price File of Apr 1, 2026 · source file | $5.25 | $21.00 | — | 75% |
| Saint Joseph Medical Center - Joliet Joliet, IL · (815) 725-7133 PARTIAL THROMBOPLASTIN TIME+5 more lines at this price File of Sep 1, 2026 · source file | $6.00 | $106.00 | $3.11–$106.00 | 94% |
| Mercy Medical Center Aurora, IL · (630) 859-2222 PARTIAL THROMBO PLASTIN TIME+5 more lines at this price File of Sep 1, 2026 · source file | $6.00 | $242.00 | $3.61–$242.00 | 98% |
| Saint Francis Hospital Evanston, IL · (847) 316-4000 HC THROMBOPLAS TIME PARTIAL File of Sep 1, 2026 · source file | $6.00 | $91.00 | $3.61–$75.53 | 93% |
| John H. Stroger, Jr. Hospital Chicago, IL · (312) 864-6000 PARTIAL THROMBOPLAS TIME (PTT) File of Apr 1, 2026 · source file | $11.20 | $16.00 | $1.68–$12.80 | 30% |
| Franciscan Health Munster Munster, IN · (219) 922-4200 Ptt; Plasma or Whole Bld 489 File of Jan 1, 2026 · source file | $14.91 | $70.00 | $4.75–$109.00 | 79% |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Ref Vw Comprehensive Panel, Partial Thromboplastin Time (Q) File of Apr 1, 2026 · source file | $21.70 | $31.00 | $5.15–$31.00 | 30% |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Ref Vw Comprehensive Panel, Partial Thromboplastin Time (Q) File of Apr 1, 2026 · source file | $23.80 | $34.00 | $6.60–$126.00 | 30% |
| MacNeal Hospital Berwyn, IL · (708) 783-9100 Partial Thromboplastin Ti (Ptt+1 more line at this price File of Mar 31, 2026 · source file | $24.32 | $128.00 | $24.32–$177.28 | 81% |
| Gottlieb Memorial Hospital Melrose Park, IL · (708) 681-3200 Partial Thromboplastin Ti (Ptt+1 more line at this price File of Mar 31, 2026 · source file | $24.32 | $128.00 | $54.53–$107.26 | 81% |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Ref Factor VIII Inhibitor Panel, Ptt (Lc) File of Apr 1, 2026 · source file | $28.00 | $40.00 | $7.72–$40.00 | 30% |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Ref Factor VIII Inhibitor Panel, Ptt (Lc) File of Apr 1, 2026 · source file | $28.00 | $40.00 | $2.76–$40.00 | 30% |
| Franciscan Health Rensselaer Rensselaer, IN · (219) 866-5141 Ptt; Plasma or Whole Bld 489 File of Jan 1, 2026 · source file | $29.36 | $82.00 | $5.38–$65.60 | 64% |
| Loyola University Medical Center Maywood, IL · (708) 216-9000 Silica Screen Ratio (Scts)+1 more line at this price File of Mar 31, 2026 · source file | $29.44 | $128.00 | $5.19–$134.91 | 77% |
| Franciscan Health Dyer Dyer, IN · (219) 865-2141 Ptt; Plasma or Whole Bld 489 File of Jan 1, 2026 · source file | $29.97 | $111.00 | $5.38–$109.00 | 73% |
| Presence Saint Joseph Hospital - Chicago Chicago, IL · (773) 665-3000 HC PTT -PARTIAL THROMBOPLASTIN+1 more line at this price File of Jan 1, 2026 · source file | $30.03 | $91.00 | $6.01–$24.52 | 67% |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Ref Factor VIII Inhibitor Panel, Ptt (Lc) File of Apr 1, 2026 · source file | $30.80 | $44.00 | $8.54–$44.00 | 30% |
| Uchicago Medicine AdventHealth Glenoaks Glendale Heights, IL · (630) 545-8000 HC APTT-D 1:1 MIX BILL (ARUP)+2 more lines at this price File of Apr 1, 2026 · source file | $31.25 | $125.00 | — | 75% |
| Uchicago Medicine AdventHealth Hinsdale Hinsdale, IL · (630) 856-9000 HC THROMBOPLAS TIME PARTIAL - APTT - PHOSLIPID ARUP+2 more lines at this price File of Apr 1, 2026 · source file | $31.25 | $125.00 | — | 75% |
| Uchicago Medicine AdventHealth Bolingbrook Bolingbrook, IL · (630) 312-5000 HC THROMBOPLAS TIME PARTIAL - APTT - PHOSLIPID ARUP+2 more lines at this price File of Apr 1, 2026 · source file | $31.25 | $125.00 | — | 75% |
| Uchicago Medicine AdventHealth La Grange La Grange, IL · (708) 352-1200 HC APTT-D 1:1 MIX BILL (ARUP)+2 more lines at this price File of Apr 1, 2026 · source file | $31.25 | $125.00 | — | 75% |
| Franciscan Health Crown Point Crown Point, IN · (219) 757-6100 Ptt; Plasma or Whole Bld 489 File of Jan 1, 2026 · source file | $32.25 | $125.00 | $125.00 | 74% |
| Morris Hospital Morris, IL · (815) 942-2932 Coagulation assessment blood test, plasma or whole blood File of Oct 27, 2026 · source file | $35.85 | $149.00 | $64.37–$153.47 | 76% |
| La Rabida Children's Hospital Chicago, IL · (773) 363-6700 ACTVD PARTIAL THROMBOPLAS TIME File of Apr 1, 2026 · source file | $39.26 | $39.26 | — | — |
| Northwest Health - Porter Valparaiso, IN · (219) 983-8300 Activated Partial Thromboplastin Time (CQ) File of Apr 1, 2026 · source file | $42.23 | $156.39 | $5.30–$131.37 | 73% |
| Northwest Health - Porter Valparaiso, IN · (219) 983-8300 Partial Thromboplastin Time+5 more lines at this price File of Apr 1, 2026 · source file | $44.28 | $164.00 | $5.30–$137.76 | 73% |
| Advocate Sherman Hospital Elgin, IL · (847) 742-9800 PARTIAL THROMBOPLASTIN TIME File of Nov 3, 2026 · source file | $50.00 | $100.00 | $5.34–$90.00 | 50% |
| Advocate Good Shepherd Hospital Barrington, IL · (847) 381-9600 PARTIAL THROMBOPLASTIN TIME File of Nov 3, 2026 · source file | $50.00 | $100.00 | $5.34–$80.00 | 50% |
| Advocate Condell Medical Center Libertyville, IL · (847) 362-2900 PARTIAL THROMBOPLASTIN TIME File of Nov 3, 2026 · source file | $50.00 | $100.00 | $5.34–$80.00 | 50% |
| Advocate South Suburban Hospital Hazel Crest, IL PARTIAL THROMBOPLASTIN TIME File of Nov 3, 2026 · source file | $50.00 | $100.00 | $5.34–$97.40 | 50% |
| Advocate Childrens Hospital Oak Lawn Oak Lawn, IL PARTIAL THROMBOPLASTIN TIME File of Nov 3, 2026 · source file | $50.00 | $100.00 | $5.34–$80.00 | 50% |
| Advocate Christ Medical Center Oak Lawn, IL · (708) 684-8000 PARTIAL THROMBOPLASTIN TIME File of Nov 3, 2026 · source file | $50.00 | $100.00 | $5.34–$80.00 | 50% |
| Advocate Lutheran General Hospital Park Ridge, IL · (847) 723-2210 PARTIAL THROMBOPLASTIN TIME File of Nov 3, 2026 · source file | $50.00 | $100.00 | $5.34–$89.00 | 50% |
| Advocate Good Samaritan Hospital Downers Grove, IL · (630) 275-5900 PARTIAL THROMBOPLASTIN TIME File of Nov 3, 2026 · source file | $50.00 | $100.00 | $5.34–$80.00 | 50% |
| Advocate Illinois Masonic Medical Center Chicago, IL · (773) 975-1600 PARTIAL THROMBOPLASTIN TIME File of Nov 3, 2026 · source file | $50.00 | $100.00 | $5.34–$81.40 | 50% |
| Advocate Trinity Hospital Chicago, IL · (773) 967-5002 PARTIAL THROMBOPLASTIN TIME File of Nov 3, 2026 · source file | $50.00 | $100.00 | $5.34–$80.00 | 50% |
| Advocate Childrens Hospital Park Ridge Park Ridge, IL PARTIAL THROMBOPLASTIN TIME File of Nov 3, 2026 · source file | $50.00 | $100.00 | $5.34–$89.00 | 50% |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Ref Vw Panel-Partial Thromboplastin Time File of Apr 1, 2026 · source file | $50.40 | $72.00 | $13.18–$72.00 | 30% |
| Louis A Weiss Memorial Hospital Chicago, IL · (773) 878-8700 aPTT Mixing Studies SO+2 more lines at this price File of Mar 17, 2025 · source file | $50.76 | $149.29 | $5.83–$97.04 | 66% |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB Ref Vw Panel-Partial Thromboplastin Time File of Apr 1, 2026 · source file | $51.10 | $73.00 | $13.87–$73.00 | 30% |
| Shriners Childrens - Chicago Chicago, IL · (773) 622-5400 COAGULATION ASSESSMENT BLOOD TEST; PLASMA OR WHOLE BLOOD File of Mar 19, 2026 · source file | $51.50 | $51.50 | $5.35–$12.24 | — |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Partial Thromboplastin Time File of Apr 1, 2026 · source file | $55.30 | $79.00 | $14.46–$79.00 | 30% |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB Partial Thromboplastin Time File of Apr 1, 2026 · source file | $56.00 | $80.00 | $15.20–$80.00 | 30% |
| Vista Medical Center East Waukegan, IL · (847) 360-3000 Q7079 THROMBOPLAST T File of Mar 31, 2025 · source file | $56.65 | $56.65 | $3.40–$9.68 | — |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Lupus Anticoagulant Evaluation Panel, Silica Clotting Time Screen+2 more lines at this price File of Apr 1, 2026 · source file | $65.10 | $93.00 | $14.88–$93.00 | 30% |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Ref Vw Comprehensive Panel, Partial Thromboplastin Time (Q) File of Apr 1, 2026 · source file | $65.80 | $94.00 | $18.14–$94.00 | 30% |
| Louis A Weiss Memorial Hospital Chicago, IL · (773) 878-8700 Partial Thromboplastin Time File of Mar 17, 2025 · source file | $66.86 | $196.64 | $5.83–$127.82 | 66% |
| Resilience Healthcare West Suburban Medical Center Oak Park, IL · (708) 383-6200 aPTT Mixing Studies SO+2 more lines at this price File of Mar 17, 2025 · source file | $66.86 | $196.64 | $5.83–$127.82 | 66% |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Aptt Mixing Study File of Apr 1, 2026 · source file | $69.30 | $99.00 | $15.84–$99.00 | 30% |
| Community First Medical Center Chicago, IL · (773) 282-7000 Coagulation assessment blood test, plasma or whole blood File of Apr 1, 2026 · source file | $69.63 | $139.25 | $4.38–$139.25 | 50% |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Ref Partial Thromboplastin Time File of Apr 1, 2026 · source file | $70.00 | $100.00 | $19.30–$100.00 | 30% |
| Methodist Hospital-Southlake Merrillville, IN · (219) 886-4000 PTT File of Aug 18, 2026 · source file | $72.80 | $104.00 | $6.01–$92.56 | 30% |
| The Methodist Hospitals Gary, IN · (219) 886-4000 PTT File of Aug 18, 2026 · source file | $72.80 | $104.00 | $6.01–$92.56 | 30% |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB Ref Lupus Anticoagulant Profile, Thromboplastin Time Partial (Mayo)+4 more lines at this price File of Apr 1, 2026 · source file | $73.50 | $105.00 | $19.95–$105.00 | 30% |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Ref Vw Comprehensive Panel, Partial Thromboplastin Time (Q)+5 more lines at this price File of Apr 1, 2026 · source file | $73.50 | $105.00 | $15.65–$105.00 | 30% |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Ref Antiphospholipid Syndrome (Aps) Profile, Thromboplastin Time Partial (Lc)+4 more lines at this price File of Apr 1, 2026 · source file | $73.50 | $105.00 | $19.22–$105.00 | 30% |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Ref Factor V Inhibitor Profile, Thromboplastin Time Partial (Lc)+4 more lines at this price File of Apr 1, 2026 · source file | $73.50 | $105.00 | $17.43–$105.00 | 30% |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Ref Lupus Anticoagulant Profile, Thromboplastin Time Partial (Mayo)+4 more lines at this price File of Apr 1, 2026 · source file | $73.50 | $105.00 | $16.80–$105.00 | 30% |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Ref Antiphospholipid Syndrome Diagnostic Panel, Beta-2 Glycoprotein Antibody (Q)+4 more lines at this price File of Apr 1, 2026 · source file | $73.50 | $105.00 | $20.37–$105.00 | 30% |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Ref Factor V Inhibitor Profile, Thromboplastin Time Partial (Lc)+4 more lines at this price File of Apr 1, 2026 · source file | $73.50 | $105.00 | $20.27–$105.00 | 30% |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Ref Antiphospholipid Syndrome Diagnostic Panel, Beta-2 Glycoprotein Antibody (Q)+5 more lines at this price File of Apr 1, 2026 · source file | $73.50 | $105.00 | $7.25–$105.00 | 30% |
| NorthShore University HealthSystems Glenbrook Hospital Glenview, IL Heparin Absorbed Aptt* File of Jan 1, 2025 · source file | $74.75 | $115.00 | $15.53–$62.79 | 35% |
| NorthShore University HealthSystems Skokie Hospital Skokie, IL Heparin Absorbed Aptt* File of Jan 1, 2025 · source file | $74.75 | $115.00 | $15.53–$62.79 | 35% |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Ref Fetal Demise Profile, Ptt (Lc)+7 more lines at this price File of Apr 1, 2026 · source file | $77.00 | $110.00 | $20.13–$110.00 | 30% |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB Ref Thrombophilia Profile, Thromboplastin Time Partial (Mayo)+7 more lines at this price File of Apr 1, 2026 · source file | $77.00 | $110.00 | $20.90–$110.00 | 30% |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Ref Thrombophilia Profile, Thromboplastin Time Partial (Mayo)+7 more lines at this price File of Apr 1, 2026 · source file | $77.00 | $110.00 | $21.34–$110.00 | 30% |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Ref Thrombophilia Profile, Thromboplastin Time Partial (Mayo)+7 more lines at this price File of Apr 1, 2026 · source file | $77.00 | $110.00 | $18.26–$110.00 | 30% |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Ref Thrombophilia Profile, Thromboplastin Time Partial (Mayo)+14 more lines at this price File of Apr 1, 2026 · source file | $77.00 | $110.00 | $16.39–$110.00 | 30% |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Ref Thrombophilia Profile, Thromboplastin Time Partial (Mayo)+13 more lines at this price File of Apr 1, 2026 · source file | $77.00 | $110.00 | $7.59–$110.00 | 30% |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Ref Thrombophilia Profile, Thromboplastin Time Partial (Mayo)+7 more lines at this price File of Apr 1, 2026 · source file | $77.00 | $110.00 | $21.23–$110.00 | 30% |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Ref Thrombophilia Profile, Thromboplastin Time Partial (Mayo)+7 more lines at this price File of Apr 1, 2026 · source file | $77.00 | $110.00 | $17.60–$110.00 | 30% |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Ref Vw Panel-Partial Thromboplastin Time File of Apr 1, 2026 · source file | $77.70 | $111.00 | $16.54–$111.00 | 30% |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Ref Vw Panel-Partial Thromboplastin Time File of Apr 1, 2026 · source file | $77.70 | $111.00 | $17.76–$111.00 | 30% |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Ref Vw Panel-Partial Thromboplastin Time File of Apr 1, 2026 · source file | $77.70 | $111.00 | $21.42–$111.00 | 30% |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Ref Thrombosis, Venous Risk Profile, Partial Thromboplastin Time (Lc) File of Apr 1, 2026 · source file | $78.40 | $112.00 | $16.69–$112.00 | 30% |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Ref Thrombosis, Venous Risk Profile, Partial Thromboplastin Time (Lc) File of Apr 1, 2026 · source file | $78.40 | $112.00 | $7.73–$112.00 | 30% |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Ref Thrombosis, Venous Risk Profile, Partial Thromboplastin Time (Lc) File of Apr 1, 2026 · source file | $78.40 | $112.00 | $26.21–$112.00 | 30% |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Ref Vw Comprehensive Panel, Partial Thromboplastin Time (Q) File of Apr 1, 2026 · source file | $79.10 | $113.00 | $18.08–$113.00 | 30% |
| Mercyhealth Crystal Lake Hospital & Medical Center Crystal Lake, IL · (792) 220-5500 CHG THROMBOPLASTIN TIME PARTIAL PLASMA/WHOLE BLOOD File of Mar 1, 2026 · source file | $79.38 | $105.84 | — | 25% |
| NorthShore University HealthSystems Skokie Hospital Skokie, IL Ptt(Part Throm Time)* (P) File of Jan 1, 2025 · source file | $79.95 | $123.00 | $16.61–$67.16 | 35% |
| NorthShore University HealthSystems Glenbrook Hospital Glenview, IL Ptt(Part Throm Time)* (P) File of Jan 1, 2025 · source file | $79.95 | $123.00 | $16.61–$67.16 | 35% |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Partial Thromboplastin Time File of Apr 1, 2026 · source file | $83.30 | $119.00 | $19.04–$119.00 | 30% |
| Mercyhealth Hospital & Medical Center - Harvard Harvard, IL · (815) 943-5431 CHG THROMBOPLASTIN TIME PARTIAL PLASMA/WHOLE BLOOD File of Mar 1, 2026 · source file | $83.51 | $111.35 | — | 25% |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Ref Vw Comprehensive Panel, Partial Thromboplastin Time (Q) File of Apr 1, 2026 · source file | $84.70 | $121.00 | $22.14–$121.00 | 30% |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Partial Thromboplastin Time File of Apr 1, 2026 · source file | $87.50 | $125.00 | $18.63–$125.00 | 30% |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Aptt Mixing Study+3 more lines at this price File of Apr 1, 2026 · source file | $88.20 | $126.00 | $23.06–$126.00 | 30% |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB Ref Vw Comprehensive Panel, Partial Thromboplastin Time (Q) File of Apr 1, 2026 · source file | $88.20 | $126.00 | $23.94–$126.00 | 30% |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB Lupus Anticoagulant Evaluation Panel, Silica Clotting Time Confirm+3 more lines at this price File of Apr 1, 2026 · source file | $92.40 | $132.00 | $25.08–$132.00 | 30% |
| Humboldt Park Health Chicago, IL · (773) 292-8200 Coagulation assessment blood test, plasma or whole blood File of Sep 29, 2026 · source file | $94.67 | $338.10 | $111.57–$355.01 | 72% |
| Elmhurst Memorial Hospital Elmhurst, IL · (331) 221-1000 HC PARTIAL THROMBOPLASTIN TIME (PTT) File of Apr 1, 2026 · source file | $100.00 | $100.00 | — | — |
| Edward Hospital Naperville, IL · (630) 527-3000 HC PARTIAL THROMBOPLASTIN TIME (PTT) File of Apr 1, 2026 · source file | $100.00 | $100.00 | — | — |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Lupus Anticoagulant Evaluation Panel, Silica Clotting Time Screen-Hepzymed+5 more lines at this price File of Apr 1, 2026 · source file | $105.70 | $151.00 | $25.07–$151.00 | 30% |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Lupus Anticoagulant Evaluation Panel, Silica Clotting Time Screen+2 more lines at this price File of Apr 1, 2026 · source file | $105.70 | $151.00 | $29.14–$151.00 | 30% |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Lupus Anticoagulant Evaluation Panel, Silica Clotting Time Screen+5 more lines at this price File of Apr 1, 2026 · source file | $112.70 | $161.00 | $21.76–$161.00 | 30% |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Aptt Mixing Study File of Apr 1, 2026 · source file | $112.70 | $161.00 | $26.73–$161.00 | 30% |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Aptt Mixing Study File of Apr 1, 2026 · source file | $112.70 | $161.00 | $31.07–$161.00 | 30% |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Partial Thromboplastin Time File of Apr 1, 2026 · source file | $113.40 | $162.00 | $26.89–$162.00 | 30% |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Partial Thromboplastin Time File of Apr 1, 2026 · source file | $113.40 | $162.00 | $31.27–$162.00 | 30% |
| Endeavor Health Highland Park Hospital Highland Park, IL HB HEPARIN ABSORBED APTT* File of Apr 1, 2026 · source file | $115.00 | $115.00 | — | — |
| Northshore University Healthsystem - Evanston Hospital Evanston, IL · (847) 570-2000 HB HEPARIN ABSORBED APTT* File of Apr 1, 2026 · source file | $115.00 | $115.00 | — | — |
| Swedish Covenant Health Chicago, IL · (773) 878-8200 HB HEPARIN ABSORBED APTT* File of Apr 1, 2026 · source file | $115.00 | $115.00 | — | — |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Partial Thromboplastin Time File of Apr 1, 2026 · source file | $120.40 | $172.00 | $18.49–$190.00 | 30% |
| Northwest Community Hospital Arlington Heights, IL · (847) 618-1000 Hb Thromboplastin Time, Partial (Ptt) Plasma Or Whole Blood File of Apr 1, 2026 · source file | $121.00 | $121.00 | — | — |
| Jackson Park Hospital Foundation Chicago, IL · (773) 947-7500 DVVRT File of Dec 26, 2025 · source file | $121.22 | $151.53 | — | 20% |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Ref Vw Panel-Partial Thromboplastin Time File of Apr 1, 2026 · source file | $121.80 | $174.00 | $28.88–$174.00 | 30% |
| Northshore University Healthsystem - Evanston Hospital Evanston, IL · (847) 570-2000 HB PTT(PART THROM TIME)* (P) File of Apr 1, 2026 · source file | $123.00 | $123.00 | — | — |
| Swedish Covenant Health Chicago, IL · (773) 878-8200 HB PTT(PART THROM TIME)* (P) File of Apr 1, 2026 · source file | $123.00 | $123.00 | — | — |
| Endeavor Health Highland Park Hospital Highland Park, IL HB PTT(PART THROM TIME)* (P) File of Apr 1, 2026 · source file | $123.00 | $123.00 | — | — |
| Ann & Robert H. Lurie Children's Hospital of Chicago Chicago, IL · (312) 227-4000 H THROMBOPLASTIN TIME PARTIAL PLASMA/WHOLE BLOOD+1 more line at this price File of Sep 1, 2026 · source file | $124.60 | $178.00 | $30.26–$169.10 | 30% |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Aptt Mixing Study File of Apr 1, 2026 · source file | $125.30 | $179.00 | $23.17–$190.00 | 30% |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Partial Thromboplastin Time+1 more line at this price File of Apr 1, 2026 · source file | $133.00 | $190.00 | $13.11–$190.00 | 30% |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Ref Vw Panel-Partial Thromboplastin Time File of Apr 1, 2026 · source file | $135.10 | $193.00 | $16.85–$211.00 | 30% |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Ref Partial Thromboplastin Time File of Apr 1, 2026 · source file | $147.70 | $211.00 | $27.00–$211.00 | 30% |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Ref Vw Panel-Partial Thromboplastin Time+1 more line at this price File of Apr 1, 2026 · source file | $147.70 | $211.00 | $14.56–$211.00 | 30% |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Ref Partial Thromboplastin Time File of Apr 1, 2026 · source file | $147.70 | $211.00 | $31.44–$211.00 | 30% |
| Jackson Park Hospital Foundation Chicago, IL · (773) 947-7500 PARTIAL PROTHROMBIN TIME File of Dec 26, 2025 · source file | $192.28 | $240.35 | — | 20% |
| Vista Medical Center East Waukegan, IL · (847) 360-3000 THROMBOPLAST TIMEPTT File of Mar 31, 2025 · source file | $194.42 | $194.42 | $6.01–$27.41 | — |
| Ingalls Memorial Hospital Harvey, IL · (708) 333-2300 Hc Partial Thromboplastin Time (Ptt)+1 more line at this price File of Apr 1, 2026 · source file | $199.00 | $199.00 | — | — |
| Uchicago Medicine Northwest Indiana Crown Point, IN · (312) 755-4706 HC PARTIAL THROMBOPLASTIN TIME (PTT) File of Apr 1, 2026 · source file | $199.00 | $199.00 | — | — |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Partial Thromboplastin Time (Ptt)+1 more line at this price File of Apr 1, 2026 · source file | $216.00 | $216.00 | — | — |
Hospital The hospital that published the price, its city and the line exactly as written in its price file.
Cash price The hospital's own price for a patient paying without insurance (“discounted cash” in its price file). Hospitals must publish it under federal law, 45 CFR 180.50. Call to confirm it before booking. More
List price The hospital's full chargemaster price (“gross charge”) before any discount. Almost nobody pays it; the gap to the cash price shows what the self-pay discount is worth. More
Insurers pay The lowest and highest rates this hospital has agreed with insurance plans for the same item, from its price file. If the cash price is below what your plan pays and you have not met your deductible, paying cash can cost you less. More
Off list How much lower the cash price is than the list price.
No cash discount This line's cash price equals the hospital's full list price. Many hospitals still reduce bills for uninsured patients: ask the billing office for its self-pay discount in writing. More
Outpatient: lowest $5.25, median $50.00, highest $216.00 — a 41.1× difference within the same market.
As an inpatient, the same code is billed by 40 facilities here, median $50.00. 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 38 of 44 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 4 it is 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.
3 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 85730 ($46.15). Such a line is almost always a physician's fee billed separately, an assistant's share or a placeholder — a real charge, but not the price of the procedure itself.
| Hospital | Cash price | File |
|---|---|---|
| Gottlieb Memorial Hospital Melrose Park, ILEwc - Lab Partial Thromboplastin Time | $0.01 | file |
| Loyola University Medical Center Maywood, ILEwc - Lab Partial Thromboplastin Time | $0.01 | file |
| Roseland Community Hospital Chicago, ILCoagulation assessment blood test, plasma or whole blood | $4.51 | file |
File Link to the hospital's own price file.