CRP blood test cost in Chicago, IL
In Chicago-Naperville-Elgin, IL-IN, 59 hospitals list a cash price for C-reactive protein (CRP) blood test, standard (not high-sensitivity): from $5.00 to $248.00, with a median of $38.31. The lowest listed price is at Saint Joseph Medical Center - Joliet and 2 other hospitals — $33.31 less than the median here. Across Illinois, the median is $69.00 at 110 hospitals.
- The median here, $38.31, is 25% below the US median of $51.00.
- That is 7.4× Medicare's 2026 national rate for the same service ($5.18).
- 12 of 59 hospitals list a cash price equal to their full list price, with no self-pay discount.
Cash prices at 59 facilities across 40 cities for code 86140, as an outpatient — the setting a self-pay patient normally buys. Collected Nov 10, 2026; the hospital files themselves were last updated between Jan 1, 2025 and Nov 6, 2026.
Lowest$5.00Saint Joseph Medical Center - Joliet + 2 more
Median$38.31half of hospitals charge less
Highest$248.00in this market
Difference49.6×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 $5.00Highest $276.00
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Saint Joseph Medical Center - Joliet lowest Joliet, IL · (815) 725-7133 C-REACTIVE PROTEIN,QUANT+3 more lines at this price File of Sep 1, 2026 · source file | $5.00 | $295.00 | $3.11–$295.00 | 98% |
| Mercy Medical Center lowest Aurora, IL · (630) 859-2222 C-REACTIVE PROTEIN+3 more lines at this price File of Sep 1, 2026 · source file | $5.00 | $166.00 | $3.11–$166.00 | 97% |
| Saint Francis Hospital lowest Evanston, IL · (847) 316-4000 HC C-REACTIVE PROTEIN File of Sep 1, 2026 · source file | $5.00 | $100.00 | $3.11–$83.00 | 95% |
| John H. Stroger, Jr. Hospital Chicago, IL · (312) 864-6000 C-REACTIVE PROTEIN File of Apr 1, 2026 · source file | $9.10 | $13.00 | $1.45–$50.19 | 30% |
| Roseland Community Hospital Chicago, IL · (773) 995-3000 Measurement C-reactive protein for detection of infection or inflammation File of Jul 1, 2026 · source file | $11.72 | $53.00 | $4.82–$58.30 | 78% |
| Franciscan Health Munster Munster, IN · (219) 922-4200 C-Reactive Protein File of Jan 1, 2026 · source file | $17.89 | $84.00 | $4.09–$109.00 | 79% |
| NorthShore University HealthSystems Glenbrook Hospital Glenview, IL HB R C-Reactive Protein File of Jan 1, 2025 · source file | $22.75 | $35.00 | $4.73–$19.11 | 35% |
| NorthShore University HealthSystems Skokie Hospital Skokie, IL HB R C-Reactive Protein File of Jan 1, 2025 · source file | $22.75 | $35.00 | $4.73–$19.11 | 35% |
| Humboldt Park Health Chicago, IL · (773) 292-8200 Measurement C-reactive protein for detection of infection or inflammation File of Sep 29, 2026 · source file | $26.75 | $95.55 | $31.53–$100.33 | 72% |
| MacNeal Hospital Berwyn, IL · (708) 783-9100 C Reactive Protein (Crpro) File of Mar 31, 2026 · source file | $29.26 | $154.00 | $29.26–$213.29 | 81% |
| Gottlieb Memorial Hospital Melrose Park, IL · (708) 681-3200 C Reactive Protein (Crpro) File of Mar 31, 2026 · source file | $29.26 | $154.00 | $65.60–$129.05 | 81% |
| Presence Saint Joseph Hospital - Chicago Chicago, IL · (773) 665-3000 HC C REACTIVE PROTEIN-CRP+1 more line at this price File of Jan 1, 2026 · source file | $33.00 | $100.00 | $5.18–$21.79 | 67% |
| La Rabida Children's Hospital Chicago, IL · (773) 363-6700 CRP+1 more line at this price File of Apr 1, 2026 · source file | $33.65 | $33.65 | — | — |
| Northshore University Healthsystem - Evanston Hospital Evanston, IL · (847) 570-2000 HB R C-REACTIVE PROTEIN File of Apr 1, 2026 · source file | $35.00 | $35.00 | — | — |
| Swedish Covenant Health Chicago, IL · (773) 878-8200 HB R C-REACTIVE PROTEIN File of Apr 1, 2026 · source file | $35.00 | $35.00 | — | — |
| Endeavor Health Highland Park Hospital Highland Park, IL HB R C-REACTIVE PROTEIN File of Apr 1, 2026 · source file | $35.00 | $35.00 | — | — |
| Loyola University Medical Center Maywood, IL · (708) 216-9000 C Reactive Protein (Crpro) File of Mar 31, 2026 · source file | $35.42 | $154.00 | $13.25 | 77% |
| Advocate Childrens Hospital Park Ridge Park Ridge, IL C-REACTIVE PROTEIN File of Nov 6, 2026 · source file | $37.50 | $75.00 | $4.60–$66.75 | 50% |
| Advocate Condell Medical Center Libertyville, IL · (847) 362-2900 C-REACTIVE PROTEIN File of Nov 3, 2026 · source file | $37.50 | $75.00 | $4.60–$60.00 | 50% |
| Advocate Trinity Hospital Chicago, IL · (773) 967-5002 C-REACTIVE PROTEIN File of Nov 3, 2026 · source file | $37.50 | $75.00 | $4.60–$60.00 | 50% |
| Advocate Sherman Hospital Elgin, IL · (847) 742-9800 C-REACTIVE PROTEIN File of Nov 3, 2026 · source file | $37.50 | $75.00 | $4.60–$67.50 | 50% |
| Advocate Good Samaritan Hospital Downers Grove, IL · (630) 275-5900 C-REACTIVE PROTEIN File of Nov 3, 2026 · source file | $37.50 | $75.00 | $4.60–$60.00 | 50% |
| Advocate South Suburban Hospital Hazel Crest, IL C-REACTIVE PROTEIN File of Nov 3, 2026 · source file | $37.50 | $75.00 | $4.60–$73.05 | 50% |
| Advocate Lutheran General Hospital Park Ridge, IL · (847) 723-2210 C-REACTIVE PROTEIN File of Nov 3, 2026 · source file | $37.50 | $75.00 | $4.60–$66.75 | 50% |
| Advocate Good Shepherd Hospital Barrington, IL · (847) 381-9600 C-REACTIVE PROTEIN File of Nov 3, 2026 · source file | $37.50 | $75.00 | $4.60–$60.00 | 50% |
| Advocate Illinois Masonic Medical Center Chicago, IL · (773) 975-1600 C-REACTIVE PROTEIN File of Nov 3, 2026 · source file | $37.50 | $75.00 | $4.60–$61.05 | 50% |
| Advocate Childrens Hospital Oak Lawn Oak Lawn, IL C-REACTIVE PROTEIN File of Nov 3, 2026 · source file | $37.50 | $75.00 | $4.60–$60.00 | 50% |
| Advocate Christ Medical Center Oak Lawn, IL · (708) 684-8000 C-REACTIVE PROTEIN File of Nov 3, 2026 · source file | $37.50 | $75.00 | $4.60–$60.00 | 50% |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Ref Ibd Diagnostic, C-Reactive Protein (Pro-Z) File of Apr 1, 2026 · source file | $37.80 | $54.00 | $9.88–$54.00 | 30% |
| Franciscan Health Rensselaer Rensselaer, IN · (219) 866-5141 C-Reactive Protein File of Jan 1, 2026 · source file | $38.31 | $107.00 | $4.64–$85.60 | 64% |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB Ref Ibd Diagnostic, C-Reactive Protein (Pro-Z) File of Apr 1, 2026 · source file | $38.50 | $55.00 | $10.45–$55.00 | 30% |
| Shriners Childrens - Chicago Chicago, IL · (773) 622-5400 MEASUREMENT C-REACTIVE PROTEIN FOR DETECTION OF INFECTION OR INFLAMMATION File of Mar 19, 2026 · source file | $44.40 | $44.40 | $4.61–$9.18 | — |
| Franciscan Health Dyer Dyer, IN · (219) 865-2141 C-Reactive Protein File of Jan 1, 2026 · source file | $45.36 | $168.00 | $4.64–$126.00 | 73% |
| Morris Hospital Morris, IL · (815) 942-2932 Measurement C-reactive protein for detection of infection or inflammation File of Oct 27, 2026 · source file | $45.47 | $189.00 | $81.65–$194.67 | 76% |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc C-Reactive Protein-Laf File of Apr 1, 2026 · source file | $50.00 | $50.00 | — | — |
| Franciscan Health Crown Point Crown Point, IN · (219) 757-6100 C-Reactive Protein File of Jan 1, 2026 · source file | $57.28 | $222.00 | $222.00 | 74% |
| Loretto Hospital Chicago, IL · (773) 626-4300 C-REACTIVE PROTEIN File of Nov 5, 2026 · source file | $57.87 | $96.45 | $57.87–$96.45 | 40% |
| Community First Medical Center Chicago, IL · (773) 282-7000 Measurement C-reactive protein for detection of infection or inflammation File of Apr 1, 2026 · source file | $58.63 | $117.25 | $5.18–$117.25 | 50% |
| Mercyhealth Crystal Lake Hospital & Medical Center Crystal Lake, IL · (792) 220-5500 CHG C-REACTIVE PROTEIN File of Mar 1, 2026 · source file | $66.15 | $88.20 | — | 25% |
| Northwest Health - Porter Valparaiso, IN · (219) 983-8300 C Reactive Protein File of Apr 1, 2026 · source file | $66.42 | $246.00 | $4.57–$206.64 | 73% |
| Methodist Hospital-Southlake Merrillville, IN · (219) 886-4000 HC C-Reactive Protein File of Aug 18, 2026 · source file | $68.60 | $98.00 | $5.18–$87.22 | 30% |
| The Methodist Hospitals Gary, IN · (219) 886-4000 HC C-Reactive Protein File of Aug 18, 2026 · source file | $68.60 | $98.00 | $5.18–$87.22 | 30% |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Ref Ibd Diagnostic, C-Reactive Protein (Pro-Z) File of Apr 1, 2026 · source file | $75.60 | $108.00 | $17.28–$108.00 | 30% |
| NorthShore University HealthSystems Glenbrook Hospital Glenview, IL C-Reactive Protein* (P) File of Jan 1, 2025 · source file | $77.35 | $119.00 | $16.07–$64.97 | 35% |
| NorthShore University HealthSystems Skokie Hospital Skokie, IL C-Reactive Protein* (P) File of Jan 1, 2025 · source file | $77.35 | $119.00 | $16.07–$64.97 | 35% |
| Louis A Weiss Memorial Hospital Chicago, IL · (773) 878-8700 C-Reactive Protein File of Mar 17, 2025 · source file | $86.33 | $253.90 | $4.15–$165.04 | 66% |
| Resilience Healthcare West Suburban Medical Center Oak Park, IL · (708) 383-6200 C-Reactive Protein File of Mar 17, 2025 · source file | $86.33 | $253.90 | $4.15–$165.04 | 66% |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB C-Reactive Protein (Crp) File of Apr 1, 2026 · source file | $88.90 | $127.00 | $18.95–$293.00 | 30% |
| Mercyhealth Hospital & Medical Center - Harvard Harvard, IL · (815) 943-5431 CHG C-REACTIVE PROTEIN File of Mar 1, 2026 · source file | $91.99 | $122.65 | — | 25% |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Ref C-Reactive Protein (Crp)+2 more lines at this price File of Apr 1, 2026 · source file | $92.40 | $132.00 | $21.91–$132.00 | 30% |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Ref Ibs Sgi Diagnostic, Bill Only, Crp+2 more lines at this price File of Apr 1, 2026 · source file | $92.40 | $132.00 | $21.12–$132.00 | 30% |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Ref Ibs Sgi Diagnostic, Bill Only, Crp+2 more lines at this price File of Apr 1, 2026 · source file | $92.40 | $132.00 | $9.11–$132.00 | 30% |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Ref Ibs Sgi Diagnostic, Bill Only, Crp+2 more lines at this price File of Apr 1, 2026 · source file | $92.40 | $132.00 | $25.48–$132.00 | 30% |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB Ref Ibs Sgi Diagnostic, Bill Only, Crp+2 more lines at this price File of Apr 1, 2026 · source file | $92.40 | $132.00 | $25.08–$132.00 | 30% |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Ref Ibs Sgi Diagnostic, Bill Only, Crp+2 more lines at this price File of Apr 1, 2026 · source file | $92.40 | $132.00 | $25.61–$132.00 | 30% |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Ref Ibs Sgi Diagnostic, Bill Only, Crp+2 more lines at this price File of Apr 1, 2026 · source file | $92.40 | $132.00 | $19.67–$132.00 | 30% |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Ref Ibs Sgi Diagnostic, Bill Only, Crp+2 more lines at this price File of Apr 1, 2026 · source file | $92.40 | $132.00 | $24.16–$132.00 | 30% |
| Jackson Park Hospital Foundation Chicago, IL · (773) 947-7500 C REACTIVE PROTEIN File of Dec 26, 2025 · source file | $98.65 | $123.31 | — | 20% |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB C-Reactive Protein (Crp) File of Apr 1, 2026 · source file | $102.90 | $147.00 | $26.90–$147.00 | 30% |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB C-Reactive Protein (Crp) File of Apr 1, 2026 · source file | $102.90 | $147.00 | $21.90–$147.00 | 30% |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB C-Reactive Protein (Crp) File of Apr 1, 2026 · source file | $105.00 | $150.00 | $28.50–$150.00 | 30% |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB C-Reactive Protein (Crp) File of Apr 1, 2026 · source file | $107.80 | $154.00 | $24.64–$154.00 | 30% |
| Northwest Community Hospital Arlington Heights, IL · (847) 618-1000 Hb C-Reactive Protein File of Apr 1, 2026 · source file | $113.00 | $113.00 | — | — |
| Northshore University Healthsystem - Evanston Hospital Evanston, IL · (847) 570-2000 HB C-REACTIVE PROTEIN* (P) File of Apr 1, 2026 · source file | $119.00 | $119.00 | — | — |
| Swedish Covenant Health Chicago, IL · (773) 878-8200 HB C-REACTIVE PROTEIN* (P) File of Apr 1, 2026 · source file | $119.00 | $119.00 | — | — |
| Endeavor Health Highland Park Hospital Highland Park, IL HB C-REACTIVE PROTEIN* (P) File of Apr 1, 2026 · source file | $119.00 | $119.00 | — | — |
| Vista Medical Center East Waukegan, IL · (847) 360-3000 C-REACTIVE PROTEIN File of Mar 31, 2025 · source file | $149.64 | $149.64 | $5.18–$21.10 | — |
| Ingalls Memorial Hospital Harvey, IL · (708) 333-2300 Hc C-Reactive Protein File of Apr 1, 2026 · source file | $152.00 | $152.00 | — | — |
| Uchicago Medicine Northwest Indiana Crown Point, IN · (312) 755-4706 HC C-REACTIVE PROTEIN File of Apr 1, 2026 · source file | $152.00 | $152.00 | — | — |
| Ann & Robert H. Lurie Children's Hospital of Chicago Chicago, IL · (312) 227-4000 H C-REACTIVE PROTEIN (CRP) SERUM File of Sep 1, 2026 · source file | $161.70 | $231.00 | $39.27–$219.45 | 30% |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Ref Ibd Diagnostic, C-Reactive Protein (Pro-Z) File of Apr 1, 2026 · source file | $165.20 | $236.00 | $39.18–$236.00 | 30% |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Ref Ibd Diagnostic, C-Reactive Protein (Pro-Z) File of Apr 1, 2026 · source file | $165.20 | $236.00 | $45.55–$236.00 | 30% |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB C-Reactive Protein (Crp) File of Apr 1, 2026 · source file | $172.20 | $246.00 | $16.97–$246.00 | 30% |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Ref Ibd Diagnostic, C-Reactive Protein (Pro-Z) File of Apr 1, 2026 · source file | $177.10 | $253.00 | $12.64–$274.00 | 30% |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Ref Ibd Diagnostic, C-Reactive Protein (Pro-Z) File of Apr 1, 2026 · source file | $191.80 | $274.00 | $40.83–$274.00 | 30% |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Ref Ibd Diagnostic, C-Reactive Protein (Pro-Z) File of Apr 1, 2026 · source file | $191.80 | $274.00 | $18.91–$274.00 | 30% |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB C-Reactive Protein (Crp) File of Apr 1, 2026 · source file | $205.10 | $293.00 | $56.55–$293.00 | 30% |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB C-Reactive Protein (Crp) File of Apr 1, 2026 · source file | $205.10 | $293.00 | $48.64–$293.00 | 30% |
| Elmhurst Memorial Hospital Elmhurst, IL · (331) 221-1000 HC C-REACTIVE PROTEIN File of Apr 1, 2026 · source file | $248.00 | $248.00 | — | — |
| Edward Hospital Naperville, IL · (630) 527-3000 HC C-REACTIVE PROTEIN File of Apr 1, 2026 · source file | $248.00 | $248.00 | — | — |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc C-Reactive Protein File of Apr 1, 2026 · source file | $276.00 | $276.00 | — | — |
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 $5.00, median $38.31, highest $248.00 — a 49.6× difference within the same market.
As an inpatient, the same code is billed by 37 facilities here, median $37.50. 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 40 of 46 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 CRP blood test is, what the price covers and why prices differ: CRP blood test explained.
10 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 86140 ($48.00). 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 C Reactive Protein | $0.01 | file |
| Loyola University Medical Center Maywood, ILEwc - Lab C Reactive Protein | $0.01 | file |
| Uchicago Medicine AdventHealth La Grange La Grange, ILHC C REACTIVE PROTEIN LEVEL MG/DL INFLAMMATORY | $4.50 | file |
| Uchicago Medicine AdventHealth Glenoaks Glendale Heights, ILHC CRP (C-REACTIVE PROTEIN) INFLAMMATORY | $4.50 | file |
| Uchicago Medicine AdventHealth Glenoaks Glendale Heights, ILHC C REACTIVE PROTEIN LEVEL MG/DL INFLAMMATORY | $4.50 | file |
| Uchicago Medicine AdventHealth Hinsdale Hinsdale, ILHC CRP (C-REACTIVE PROTEIN) INFLAMMATORY | $4.50 | file |
| Uchicago Medicine AdventHealth Hinsdale Hinsdale, ILHC C REACTIVE PROTEIN LEVEL MG/DL INFLAMMATORY | $4.50 | file |
| Uchicago Medicine AdventHealth Bolingbrook Bolingbrook, ILHC CRP (C-REACTIVE PROTEIN) INFLAMMATORY | $4.50 | file |
| Uchicago Medicine AdventHealth Bolingbrook Bolingbrook, ILHC C REACTIVE PROTEIN LEVEL MG/DL INFLAMMATORY | $4.50 | file |
| Uchicago Medicine AdventHealth La Grange La Grange, ILHC CRP (C-REACTIVE PROTEIN) INFLAMMATORY | $4.50 | file |
File Link to the hospital's own price file.