Sodium test cost in Chicago, IL
In Chicago-Naperville-Elgin, IL-IN, 63 hospitals list a cash price for sodium blood test: from $4.00 to $156.71, with a median of $32.50. The lowest listed price is at Saint Joseph Medical Center - Joliet and 2 other hospitals — $28.50 less than the median here. Across Illinois, the median is $49.00 at 113 hospitals.
Cash prices at 63 facilities across 45 cities for code 84295, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 29, 2026; the hospital files themselves were last updated between Mar 17, 2025 and Sep 1, 2026.
Lowest$4.00Saint Joseph Medical Center - Joliet + 2 more
Median$32.50half of hospitals charge less
Highest$156.71in this market
Difference39.2×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 $4.00Highest $156.71
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Saint Joseph Medical Center - Joliet lowest Joliet, IL · (815) 725-7133 SODIUM+2 more lines at this price File of Sep 1, 2026 · source file | $4.00 | $90.00 | $2.89–$90.00 | 96% |
| Saint Francis Hospital lowest Evanston, IL · (847) 316-4000 HC ASSAY OF SERUM SODIUM File of Sep 1, 2026 · source file | $4.00 | $44.00 | $2.89–$38.26 | 91% |
| Mercy Medical Center lowest Aurora, IL · (630) 859-2222 SODIUM File of Sep 1, 2026 · source file | $4.00 | $88.00 | $2.89–$88.00 | 95% |
| Uchicago Medicine AdventHealth Glenoaks Glendale Heights, IL · (630) 545-8000 HC SODIUM LEVEL File of Apr 1, 2026 · source file | $4.25 | $17.00 | — | 75% |
| Uchicago Medicine AdventHealth Hinsdale Hinsdale, IL · (630) 856-9000 HC SODIUM LEVEL File of Apr 1, 2026 · source file | $4.25 | $17.00 | — | 75% |
| Uchicago Medicine AdventHealth Bolingbrook Bolingbrook, IL · (630) 312-5000 HC SODIUM LEVEL File of Apr 1, 2026 · source file | $4.25 | $17.00 | — | 75% |
| Uchicago Medicine AdventHealth La Grange La Grange, IL · (708) 352-1200 HC SODIUM LEVEL File of Apr 1, 2026 · source file | $4.25 | $17.00 | — | 75% |
| Roseland Community Hospital Chicago, IL · (773) 995-3000 Blood sodium level File of Jul 1, 2026 · source file | $5.50 | $62.00 | $4.47–$68.20 | 91% |
| John H. Stroger, Jr. Hospital Chicago, IL · (312) 864-6000 SODIUM BLOOD source file | $9.10 | $13.00 | $1.35–$25.21 | 30% |
| Franciscan Health Munster Munster, IN · (219) 922-4200 Assay of Serum Sodium source file | $12.99 | $61.00 | $3.80–$109.00 | 79% |
| Community First Medical Center Chicago, IL · (773) 282-7000 Blood sodium level File of Apr 1, 2026 · source file | $13.63 | $27.25 | $1.31–$33.00 | 50% |
| Presence Saint Joseph Hospital - Chicago Chicago, IL · (773) 665-3000 HC SODIUM-SERUM+3 more lines at this price source file | $14.52 | $44.00 | $4.81–$20.43 | 67% |
| Franciscan Health Munster Munster, IN · (219) 922-4200 Sodium; Whole Bld source file | $14.91 | $70.00 | $3.80–$109.00 | 79% |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Sodium Epoc (POCT) File of Apr 1, 2026 · source file | $15.40 | $22.00 | $5.15–$70.00 | 30% |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Sodium Epoc (POCT) File of Apr 1, 2026 · source file | $15.40 | $22.00 | $3.65–$22.00 | 30% |
| Franciscan Health Dyer Dyer, IN · (219) 865-2141 Assay of Serum Sodium source file | $16.47 | $61.00 | $4.30–$109.00 | 73% |
| Humboldt Park Health Chicago, IL · (773) 292-8200 Blood sodium level File of Aug 24, 2026 · source file | $19.40 | $69.30 | $69.30 | 72% |
| MacNeal Hospital Berwyn, IL · (708) 783-9100 Istat Sodium (Iabg)+3 more lines at this price File of Mar 31, 2026 · source file | $20.52 | $108.00 | $0.83–$149.58 | 81% |
| Gottlieb Memorial Hospital Melrose Park, IL · (708) 681-3200 Anes Analys Sodium+3 more lines at this price File of Mar 31, 2026 · source file | $20.52 | $108.00 | $46.01–$90.50 | 81% |
| Franciscan Health Munster Munster, IN · (219) 922-4200 Sodium; Whole Bld 1260 source file | $21.09 | $99.00 | $3.80–$109.00 | 79% |
| Franciscan Health Crown Point Crown Point, IN · (219) 757-6100 Sodium; Whole Bld 1260+3 more lines at this price source file | $21.16 | $82.00 | $82.00 | 74% |
| Franciscan Health Dyer Dyer, IN · (219) 865-2141 Assay of Serum Sodium-Oh+2 more lines at this price source file | $22.14 | $82.00 | $4.30–$109.00 | 73% |
| Franciscan Health Rensselaer Rensselaer, IN · (219) 866-5141 Assay of Serum Sodium+1 more line at this price source file | $22.91 | $64.00 | $4.30–$51.20 | 64% |
| Methodist Hospital-Southlake Merrillville, IN · (219) 886-4000 HC Sodium; Serum, Plasma or Whole Blood source file | $24.50 | $35.00 | $4.81–$31.15 | 30% |
| The Methodist Hospitals Gary, IN · (219) 886-4000 HC Sodium; Serum, Plasma or Whole Blood source file | $24.50 | $35.00 | $4.81–$31.15 | 30% |
| Loyola University Medical Center Maywood, IL · (708) 216-9000 Sodium, Serum (Na)+3 more lines at this price File of Mar 31, 2026 · source file | $24.84 | $108.00 | $6.41–$113.83 | 77% |
| Morris Hospital Morris, IL · (815) 942-2932 Blood sodium level File of Jun 30, 2026 · source file | $28.39 | $118.00 | $4.81–$100.30 | 76% |
| Resilience Healthcare West Suburban Medical Center Oak Park, IL · (708) 383-6200 84295 SODIUM SERUM PLASMA OR WHOLE BLOOD File of Mar 17, 2025 · source file | $29.70 | $87.35 | $4.67–$56.78 | 66% |
| La Rabida Children's Hospital Chicago, IL · (773) 363-6700 AFT SODIUM STAT+2 more lines at this price File of Apr 1, 2026 · source file | $31.53 | $31.53 | — | — |
| Advocate Trinity Hospital Chicago, IL · (773) 967-5002 POC SODIUM SERUM File of Nov 4, 2025 · source file | $32.50 | $65.00 | $4.81–$52.00 | 50% |
| Advocate Sherman Hospital Elgin, IL · (847) 742-9800 POC SODIUM SERUM File of Nov 4, 2025 · source file | $32.50 | $65.00 | $4.81–$58.50 | 50% |
| Advocate Lutheran General Hospital Park Ridge, IL · (847) 723-2210 POC SODIUM SERUM File of Nov 4, 2025 · source file | $32.50 | $65.00 | $4.81–$57.85 | 50% |
| Advocate South Suburban Hospital Hazel Crest, IL POC SODIUM SERUM File of Nov 4, 2025 · source file | $32.50 | $65.00 | $4.81–$63.31 | 50% |
| Advocate Childrens Hospital Oak Lawn Oak Lawn, IL POC SODIUM SERUM File of Nov 4, 2025 · source file | $32.50 | $65.00 | $4.81–$52.00 | 50% |
| Advocate Christ Medical Center Oak Lawn, IL · (708) 684-8000 POC SODIUM SERUM File of Nov 4, 2025 · source file | $32.50 | $65.00 | $4.81–$52.00 | 50% |
| Advocate Good Shepherd Hospital Barrington, IL · (847) 381-9600 POC SODIUM SERUM File of Nov 4, 2025 · source file | $32.50 | $65.00 | $4.81–$52.00 | 50% |
| Advocate Childrens Hospital Park Ridge Park Ridge, IL POC SODIUM SERUM File of Nov 4, 2025 · source file | $32.50 | $65.00 | $4.81–$57.85 | 50% |
| Advocate Illinois Masonic Medical Center Chicago, IL · (773) 975-1600 POC SODIUM SERUM File of Nov 4, 2025 · source file | $32.50 | $65.00 | $4.81–$52.91 | 50% |
| Advocate Condell Medical Center Libertyville, IL · (847) 362-2900 POC SODIUM SERUM File of Nov 4, 2025 · source file | $32.50 | $65.00 | $4.81–$52.00 | 50% |
| Advocate Good Samaritan Hospital Downers Grove, IL · (630) 275-5900 POC SODIUM SERUM File of Nov 4, 2025 · source file | $32.50 | $65.00 | $4.81–$52.00 | 50% |
| The Methodist Hospitals Gary, IN · (219) 886-4000 Sodium+1 more line at this price source file | $39.20 | $56.00 | $4.81–$49.84 | 30% |
| Methodist Hospital-Southlake Merrillville, IN · (219) 886-4000 Assay of Serum Sodium+1 more line at this price source file | $39.20 | $56.00 | $4.81–$49.84 | 30% |
| Northwest Health - Porter Valparaiso, IN · (219) 983-8300 84295 SODIUM,SER PL OR WB+2 more lines at this price File of Apr 1, 2026 · source file | $39.69 | $147.00 | $4.24–$123.48 | 73% |
| Shriners Childrens - Chicago Chicago, IL · (773) 622-5400 ASSAY OF SERUM SODIUM source file | $41.30 | $41.30 | $4.28–$9.18 | — |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Sodium; Serum, Plasma Or Whole Blood-Laf File of Apr 1, 2026 · source file | $43.00 | $43.00 | — | — |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Sodium Assay File of Apr 1, 2026 · source file | $43.40 | $62.00 | $11.35–$62.00 | 30% |
| Resilience Healthcare West Suburban Medical Center Oak Park, IL · (708) 383-6200 Sodium Level File of Mar 17, 2025 · source file | $44.41 | $130.61 | $4.67–$84.90 | 66% |
| Louis A Weiss Memorial Hospital Chicago, IL · (773) 878-8700 Sodium Level File of Mar 17, 2025 · source file | $44.41 | $130.61 | $4.67–$84.90 | 66% |
| Advocate Good Shepherd Hospital Barrington, IL · (847) 381-9600 SODIUM SERUM File of Nov 4, 2025 · source file | $45.00 | $90.00 | $4.81–$72.00 | 50% |
| Advocate Sherman Hospital Elgin, IL · (847) 742-9800 SODIUM SERUM File of Nov 4, 2025 · source file | $45.00 | $90.00 | $4.81–$81.00 | 50% |
| Advocate Good Samaritan Hospital Downers Grove, IL · (630) 275-5900 SODIUM SERUM File of Nov 4, 2025 · source file | $45.00 | $90.00 | $4.81–$72.00 | 50% |
| Advocate Lutheran General Hospital Park Ridge, IL · (847) 723-2210 SODIUM SERUM File of Nov 4, 2025 · source file | $45.00 | $90.00 | $4.81–$80.10 | 50% |
| Advocate South Suburban Hospital Hazel Crest, IL SODIUM SERUM File of Nov 4, 2025 · source file | $45.00 | $90.00 | $4.81–$87.66 | 50% |
| Advocate Trinity Hospital Chicago, IL · (773) 967-5002 SODIUM SERUM File of Nov 4, 2025 · source file | $45.00 | $90.00 | $4.81–$72.00 | 50% |
| Advocate Childrens Hospital Oak Lawn Oak Lawn, IL SODIUM SERUM File of Nov 4, 2025 · source file | $45.00 | $90.00 | $4.81–$72.00 | 50% |
| Advocate Christ Medical Center Oak Lawn, IL · (708) 684-8000 SODIUM SERUM File of Nov 4, 2025 · source file | $45.00 | $90.00 | $4.81–$72.00 | 50% |
| Advocate Condell Medical Center Libertyville, IL · (847) 362-2900 SODIUM SERUM File of Nov 4, 2025 · source file | $45.00 | $90.00 | $4.81–$72.00 | 50% |
| Advocate Illinois Masonic Medical Center Chicago, IL · (773) 975-1600 SODIUM SERUM File of Nov 4, 2025 · source file | $45.00 | $90.00 | $4.81–$73.26 | 50% |
| Advocate Childrens Hospital Park Ridge Park Ridge, IL SODIUM SERUM File of Nov 4, 2025 · source file | $45.00 | $90.00 | $4.81–$80.10 | 50% |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Sodium Epoc (POCT) File of Apr 1, 2026 · source file | $49.00 | $70.00 | $4.83–$70.00 | 30% |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Sodium Epoc (POCT) File of Apr 1, 2026 · source file | $49.00 | $70.00 | $13.51–$70.00 | 30% |
| Northwestern Medicine Marianjoy Rehabilitation Hospital Wheaton, IL HB Sodium Epoc (POCT) File of Apr 1, 2026 · source file | $49.00 | $70.00 | $29.40–$70.00 | 30% |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB Sodium Epoc (POCT) File of Apr 1, 2026 · source file | $49.00 | $70.00 | $13.30–$70.00 | 30% |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Sodium Epoc (POCT) File of Apr 1, 2026 · source file | $49.00 | $70.00 | $12.81–$70.00 | 30% |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Sodium Epoc (POCT) File of Apr 1, 2026 · source file | $49.00 | $70.00 | $11.20–$70.00 | 30% |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Sodium Epoc (POCT) File of Apr 1, 2026 · source file | $49.00 | $70.00 | $10.43–$70.00 | 30% |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Sodium; Serum, Plasma Or Whole Blood File of Apr 1, 2026 · source file | $50.00 | $50.00 | — | — |
| NorthShore University HealthSystems Glenbrook Hospital Glenview, IL R Sodium; Serum (P)+2 more lines at this price source file | $50.70 | $78.00 | $10.53–$42.59 | 35% |
| NorthShore University HealthSystems Skokie Hospital Skokie, IL Sodium * (P)+2 more lines at this price source file | $50.70 | $78.00 | $10.53–$42.59 | 35% |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Sodium, Blood (Bg) File of Apr 1, 2026 · source file | $51.80 | $74.00 | $13.54–$74.00 | 30% |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Sodium, Blood (Bg) File of Apr 1, 2026 · source file | $51.80 | $74.00 | $5.11–$74.00 | 30% |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Sodium, Blood (Bg) File of Apr 1, 2026 · source file | $51.80 | $74.00 | $17.32–$124.00 | 30% |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Sodium, Blood (Bg) File of Apr 1, 2026 · source file | $51.80 | $74.00 | $11.03–$74.00 | 30% |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Sodium, Blood (Bg)+1 more line at this price File of Apr 1, 2026 · source file | $52.50 | $75.00 | $12.00–$75.00 | 30% |
| Northwestern Medicine Marianjoy Rehabilitation Hospital Wheaton, IL HB Sodium Assay File of Apr 1, 2026 · source file | $52.50 | $75.00 | $31.50–$75.00 | 30% |
| Mercyhealth Crystal Lake Hospital & Medical Center Crystal Lake, IL · (792) 220-5500 CHG SODIUM SERUM PLASMA OR WHOLE BLOOD File of Mar 1, 2026 · source file | $52.92 | $70.56 | — | 25% |
| Mercyhealth Hospital & Medical Center - Harvard Harvard, IL · (815) 943-5431 CHG SODIUM SERUM PLASMA OR WHOLE BLOOD File of Mar 1, 2026 · source file | $54.50 | $72.67 | — | 25% |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Sodium Assay File of Apr 1, 2026 · source file | $56.00 | $80.00 | $14.51–$154.00 | 30% |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB Sodium Assay File of Apr 1, 2026 · source file | $56.00 | $80.00 | $15.20–$80.00 | 30% |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Sodium Assay File of Apr 1, 2026 · source file | $65.10 | $93.00 | $13.86–$93.00 | 30% |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Sodium, Blood (Bg) File of Apr 1, 2026 · source file | $74.20 | $106.00 | $17.60–$106.00 | 30% |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Sodium, Blood (Bg) File of Apr 1, 2026 · source file | $74.20 | $106.00 | $20.46–$106.00 | 30% |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Sodium Assay File of Apr 1, 2026 · source file | $77.00 | $110.00 | $18.26–$110.00 | 30% |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Sodium Assay File of Apr 1, 2026 · source file | $77.00 | $110.00 | $21.23–$110.00 | 30% |
| Swedish Covenant Health Chicago, IL · (773) 878-8200 HB SODIUM * (P)+2 more lines at this price File of Apr 1, 2026 · source file | $78.00 | $78.00 | — | — |
| Northshore University Healthsystem - Evanston Hospital Evanston, IL · (847) 570-2000 HB R SODIUM; SERUM (P)+2 more lines at this price File of Apr 1, 2026 · source file | $78.00 | $78.00 | — | — |
| Endeavor Health Highland Park Hospital Highland Park, IL HB R SODIUM; SERUM (P)+2 more lines at this price File of Apr 1, 2026 · source file | $78.00 | $78.00 | — | — |
| NorthShore University HealthSystems Skokie Hospital Skokie, IL Sodium Emer Csu Lab (P) source file | $79.95 | $123.00 | $16.61–$67.16 | 35% |
| NorthShore University HealthSystems Glenbrook Hospital Glenview, IL Sodium Emer Csu Lab (P) source file | $79.95 | $123.00 | $16.61–$67.16 | 35% |
| Northwest Community Hospital Arlington Heights, IL · (847) 618-1000 Hb Sodium, Whole Blood Poct+1 more line at this price File of Apr 1, 2026 · source file | $81.00 | $81.00 | — | — |
| Ann & Robert H. Lurie Children's Hospital of Chicago Chicago, IL · (312) 227-4000 H SODIUM BLOOD+3 more lines at this price source file | $86.10 | $123.00 | $20.91–$8,500.00 | 30% |
| Elmhurst Memorial Hospital Elmhurst, IL · (331) 221-1000 HC SODIUM SERUM PLASMA OR WHOLE BLOOD File of Apr 1, 2026 · source file | $99.00 | $99.00 | — | — |
| Edward Hospital Naperville, IL · (630) 527-3000 HC SODIUM SERUM PLASMA OR WHOLE BLOOD File of Apr 1, 2026 · source file | $99.00 | $99.00 | — | — |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Sodium Assay File of Apr 1, 2026 · source file | $107.80 | $154.00 | $10.63–$154.00 | 30% |
| Jackson Park Hospital Foundation Chicago, IL · (773) 947-7500 SODIUM SERUM source file | $117.04 | $146.30 | — | 20% |
| Swedish Covenant Health Chicago, IL · (773) 878-8200 HB SODIUM,EMER,CSU LAB (P) File of Apr 1, 2026 · source file | $123.00 | $123.00 | — | — |
| Endeavor Health Highland Park Hospital Highland Park, IL HB SODIUM,EMER,CSU LAB (P) File of Apr 1, 2026 · source file | $123.00 | $123.00 | — | — |
| Northshore University Healthsystem - Evanston Hospital Evanston, IL · (847) 570-2000 HB SODIUM,EMER,CSU LAB (P) File of Apr 1, 2026 · source file | $123.00 | $123.00 | — | — |
| Uchicago Medicine Northwest Indiana Crown Point, IN · (312) 755-4706 HC SODIUM; SERUM, PLASMA OR WHOLE BLOOD File of Apr 1, 2026 · source file | $136.00 | $136.00 | — | — |
| Ingalls Memorial Hospital Harvey, IL · (708) 333-2300 Hc Sodium; Serum, Plasma Or Whole Blood File of Apr 1, 2026 · source file | $136.00 | $136.00 | — | — |
| Vista Medical Center East Waukegan, IL · (847) 360-3000 SODIUM,SER PL OR WB source file | $156.71 | $156.71 | $0.01–$22.10 | — |
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 $4.00, median $32.50, highest $156.71 — a 39.2× difference within the same market.
As an inpatient, the same code is billed by 40 facilities here, median $32.50. 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 41 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 it is
A sodium test measures the level of sodium in the blood. It is used for confusion, weakness, dehydration and for people on diuretics or with heart, kidney or liver disease.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.