Potassium test cost in Chicago, IL — inpatient
In Chicago-Naperville-Elgin, IL-IN, 40 hospitals list a cash price for potassium blood test as an inpatient: from $4.25 to $129.00, with a median of $27.50. The lowest listed price is at Uchicago Medicine AdventHealth Glenoaks and 3 other hospitals — $23.25 less than the median here. Across Illinois, the median is $44.80 at 114 hospitals.
Cash prices at 40 facilities across 28 cities for code 84132, as an inpatient (admitted to hospital) . Collected Sep 29, 2026; the hospital files themselves were last updated between Mar 17, 2025 and Apr 1, 2026.
Lowest$4.25Uchicago Medicine AdventHealth Glenoaks + 3 more
Median$27.50half pay less
Highest$129.00in this market
Difference30.4×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 $4.25Highest $129.00
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Uchicago Medicine AdventHealth Glenoaks lowest Glendale Heights, IL · (630) 545-8000 HC POTASSIUM LEVEL | $4.25 | $17.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth La Grange lowest La Grange, IL · (708) 352-1200 HC POTASSIUM LEVEL | $4.25 | $17.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Bolingbrook lowest Bolingbrook, IL · (630) 312-5000 HC POTASSIUM LEVEL | $4.25 | $17.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Hinsdale lowest Hinsdale, IL · (630) 856-9000 HC POTASSIUM LEVEL | $4.25 | $17.00 | — | 75% | Apr 1, 2026 source file |
| John H. Stroger, Jr. Hospital Chicago, IL · (312) 864-6000 POTASSIUM SERUM | $8.40 | $12.00 | $1.29–$39.11 | 30% | — source file |
| Presence Saint Joseph Hospital - Chicago Chicago, IL · (773) 665-3000 HC I-STAT K (POTASSIUM) | $13.86 | $42.00 | $4.76–$20.43 | 67% | — source file |
| Presence Saint Joseph Hospital - Chicago Chicago, IL · (773) 665-3000 HC POTASSIUM-SERUM | $13.86 | $42.00 | $4.76–$20.43 | 67% | — source file |
| Franciscan Health Munster Munster, IN · (219) 922-4200 Assay of Serum Potassium 934 | $15.55 | $73.00 | $3.76–$109.00 | 79% | — source file |
| Franciscan Health Rensselaer Rensselaer, IN · (219) 866-5141 Assay of Serum Potassium | $17.54 | $49.00 | $4.26–$39.20 | 64% | — source file |
| Franciscan Health Rensselaer Rensselaer, IN · (219) 866-5141 Assay of Serum Potassium 934 | $17.54 | $49.00 | $4.26–$39.20 | 64% | — source file |
| Franciscan Health Munster Munster, IN · (219) 922-4200 Assay of Serum Potassium | $18.74 | $88.00 | — | 79% | — source file |
| Franciscan Health Dyer Dyer, IN · (219) 865-2141 Assay of Serum Potassium 934 | $19.71 | $73.00 | $4.26–$109.00 | 73% | — source file |
| Franciscan Health Munster Munster, IN · (219) 922-4200 Assay of Serum Potassium 1257 | $21.09 | $99.00 | $3.76–$109.00 | 79% | — source file |
| La Rabida Children's Hospital Chicago, IL · (773) 363-6700 ISTAT POTASSIUM | $21.30 | $21.30 | — | — | Apr 1, 2026 source file |
| Franciscan Health Dyer Dyer, IN · (219) 865-2141 Assay of Serum Potassium-ER | $22.14 | $82.00 | $4.26–$109.00 | 73% | — source file |
| Franciscan Health Dyer Dyer, IN · (219) 865-2141 Assay of Serum Potassium | $22.14 | $82.00 | $4.26–$109.00 | 73% | — source file |
| Franciscan Health Dyer Dyer, IN · (219) 865-2141 Assay of Serum Potassium-Oh | $22.14 | $82.00 | $4.26–$109.00 | 73% | — source file |
| Franciscan Health Dyer Dyer, IN · (219) 865-2141 Assay of Serum Potassium-Nicu | $22.14 | $82.00 | $4.26–$109.00 | 73% | — source file |
| Franciscan Health Dyer one side Dyer, IN · (219) 865-2141 HC Assay Fo Serum Potassium-Rt | $22.14 | $82.00 | $4.26–$109.00 | 73% | — source file |
| Advocate Sherman Hospital Elgin, IL · (847) 742-9800 POC POTASSIUM SERUM | $27.50 | $55.00 | $24.04–$49.50 | 50% | Nov 4, 2025 source file |
| Advocate Childrens Hospital Park Ridge Park Ridge, IL POC POTASSIUM SERUM | $27.50 | $55.00 | $24.04–$44.00 | 50% | Nov 4, 2025 source file |
| Advocate Christ Medical Center Oak Lawn, IL · (708) 684-8000 POC POTASSIUM SERUM | $27.50 | $55.00 | $24.04–$44.00 | 50% | Nov 4, 2025 source file |
| Advocate Good Shepherd Hospital Barrington, IL · (847) 381-9600 POC POTASSIUM SERUM | $27.50 | $55.00 | $24.04–$44.00 | 50% | Nov 4, 2025 source file |
| Advocate Illinois Masonic Medical Center Chicago, IL · (773) 975-1600 POC POTASSIUM SERUM | $27.50 | $55.00 | $24.04–$44.00 | 50% | Nov 4, 2025 source file |
| Advocate South Suburban Hospital Hazel Crest, IL POC POTASSIUM SERUM | $27.50 | $55.00 | $24.04–$44.00 | 50% | Nov 4, 2025 source file |
| Advocate Lutheran General Hospital Park Ridge, IL · (847) 723-2210 POC POTASSIUM SERUM | $27.50 | $55.00 | $24.04–$44.00 | 50% | Nov 4, 2025 source file |
| Advocate Condell Medical Center Libertyville, IL · (847) 362-2900 POC POTASSIUM SERUM | $27.50 | $55.00 | $24.04–$44.00 | 50% | Nov 4, 2025 source file |
| Advocate Good Samaritan Hospital Downers Grove, IL · (630) 275-5900 POC POTASSIUM SERUM | $27.50 | $55.00 | $24.04–$44.00 | 50% | Nov 4, 2025 source file |
| Advocate Trinity Hospital Chicago, IL · (773) 967-5002 POC POTASSIUM SERUM | $27.50 | $55.00 | $24.04–$44.00 | 50% | Nov 4, 2025 source file |
| Advocate Childrens Hospital Oak Lawn Oak Lawn, IL POC POTASSIUM SERUM | $27.50 | $55.00 | $24.04–$44.00 | 50% | Nov 4, 2025 source file |
| Franciscan Health Crown Point Crown Point, IN · (219) 757-6100 Assay of Serum Potassium-ER | $28.64 | $111.00 | $111.00 | 74% | — source file |
| Franciscan Health Crown Point Crown Point, IN · (219) 757-6100 Assay of Serum Potassium 934 | $28.64 | $111.00 | $111.00 | 74% | — source file |
| Franciscan Health Crown Point Crown Point, IN · (219) 757-6100 Assay of Serum Potassium 1257 | $28.64 | $111.00 | $111.00 | 74% | — source file |
| Franciscan Health Crown Point Crown Point, IN · (219) 757-6100 Assay of Serum Potassium | $28.64 | $111.00 | $111.00 | 74% | — source file |
| Franciscan Health Crown Point Crown Point, IN · (219) 757-6100 Assay of Serum Potassium-Nicu | $28.64 | $111.00 | $111.00 | 74% | — source file |
| Resilience Healthcare West Suburban Medical Center Oak Park, IL · (708) 383-6200 84132 POTASSIUM SERUM PLASMA/WHOLE BLOOD | $29.79 | $87.61 | $56.95 | 66% | Mar 17, 2025 source file |
| La Rabida Children's Hospital Chicago, IL · (773) 363-6700 POTASSIUM | $29.92 | $29.92 | — | — | Apr 1, 2026 source file |
| La Rabida Children's Hospital Chicago, IL · (773) 363-6700 AFT POTASSIUM - STAT | $29.92 | $29.92 | — | — | Apr 1, 2026 source file |
| Advocate South Suburban Hospital Hazel Crest, IL POTASSIUM SERUM | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Childrens Hospital Oak Lawn Oak Lawn, IL POTASSIUM SERUM | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Christ Medical Center Oak Lawn, IL · (708) 684-8000 POTASSIUM SERUM | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Trinity Hospital Chicago, IL · (773) 967-5002 POTASSIUM SERUM | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Good Samaritan Hospital Downers Grove, IL · (630) 275-5900 POTASSIUM SERUM | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Condell Medical Center Libertyville, IL · (847) 362-2900 POTASSIUM SERUM | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Illinois Masonic Medical Center Chicago, IL · (773) 975-1600 POTASSIUM SERUM | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Lutheran General Hospital Park Ridge, IL · (847) 723-2210 POTASSIUM SERUM | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Childrens Hospital Park Ridge Park Ridge, IL POTASSIUM SERUM | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Good Shepherd Hospital Barrington, IL · (847) 381-9600 POTASSIUM SERUM | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Sherman Hospital Elgin, IL · (847) 742-9800 POTASSIUM SERUM | $37.50 | $75.00 | $32.78–$67.50 | 50% | Nov 4, 2025 source file |
| NorthShore University HealthSystems Skokie Hospital Skokie, IL R Potassium; Serum (P) | $42.90 | $66.00 | $10.76–$35.31 | 35% | — source file |
| NorthShore University HealthSystems Glenbrook Hospital Glenview, IL R Potassium; Serum (P) | $42.90 | $66.00 | $10.76–$35.31 | 35% | — source file |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Potassium; Serum, Plasma Or Whole Blood-Laf | $43.00 | $43.00 | — | — | Apr 1, 2026 source file |
| NorthShore University HealthSystems Glenbrook Hospital Glenview, IL Potassium I-Stat (P) | $43.55 | $67.00 | $10.92–$35.85 | 35% | — source file |
| NorthShore University HealthSystems Skokie Hospital Skokie, IL Potassium Emer Csu Lab (P) | $43.55 | $67.00 | $10.92–$35.85 | 35% | — source file |
| NorthShore University HealthSystems Skokie Hospital Skokie, IL Potassium Whole Blood* | $43.55 | $67.00 | $10.92–$35.85 | 35% | — source file |
| NorthShore University HealthSystems Skokie Hospital Skokie, IL Potassium * (P) | $43.55 | $67.00 | $10.92–$35.85 | 35% | — source file |
| NorthShore University HealthSystems Skokie Hospital Skokie, IL Potassium I-Stat (P) | $43.55 | $67.00 | $10.92–$35.85 | 35% | — source file |
| NorthShore University HealthSystems Glenbrook Hospital Glenview, IL Potassium Whole Blood* | $43.55 | $67.00 | $10.92–$35.85 | 35% | — source file |
| NorthShore University HealthSystems Glenbrook Hospital Glenview, IL Potassium * (P) | $43.55 | $67.00 | $10.92–$35.85 | 35% | — source file |
| NorthShore University HealthSystems Glenbrook Hospital Glenview, IL Potassium Emer Csu Lab (P) | $43.55 | $67.00 | $10.92–$35.85 | 35% | — source file |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Potassium; Serum, Plasma Or Whole Blood | $50.00 | $50.00 | — | — | Apr 1, 2026 source file |
| Mercyhealth Hospital & Medical Center - Harvard Harvard, IL · (815) 943-5431 CHG POTASSIUM SERUM PLASMA/WHOLE BLOOD | $51.86 | $69.15 | — | 25% | Mar 1, 2026 source file |
| Resilience Healthcare West Suburban Medical Center Oak Park, IL · (708) 383-6200 Potassium Level | $52.39 | $154.08 | $100.15 | 66% | Mar 17, 2025 source file |
| Louis A Weiss Memorial Hospital Chicago, IL · (773) 878-8700 Potassium Level | $52.39 | $154.08 | $100.15 | 66% | Mar 17, 2025 source file |
| Northwest Health - Porter Valparaiso, IN · (219) 983-8300 84132 POTASSIUM SER PL WB | $52.92 | $147.00 | $35.28–$123.48 | 64% | Apr 1, 2026 source file |
| Northwest Health - Porter Valparaiso, IN · (219) 983-8300 Blood Gas Potassium DM Arterial | $52.92 | $147.00 | $35.28–$123.48 | 64% | Apr 1, 2026 source file |
| Northwest Health - Porter Valparaiso, IN · (219) 983-8300 Blood Gas Sodium DM Arterial | $52.92 | $147.00 | $35.28–$123.48 | 64% | Apr 1, 2026 source file |
| Northwest Health - Porter Valparaiso, IN · (219) 983-8300 .BG Potassium DM Art POC | $52.92 | $147.00 | $35.28–$123.48 | 64% | Apr 1, 2026 source file |
| Mercyhealth Crystal Lake Hospital & Medical Center Crystal Lake, IL · (792) 220-5500 CHG POTASSIUM SERUM PLASMA/WHOLE BLOOD | $52.92 | $70.56 | — | 25% | Mar 1, 2026 source file |
| Northwest Health - Porter Valparaiso, IN · (219) 983-8300 Potassium Serum | $52.92 | $147.00 | $35.28–$123.48 | 64% | Apr 1, 2026 source file |
| Ann & Robert H. Lurie Children's Hospital of Chicago Chicago, IL · (312) 227-4000 H POTASSIUM BLOOD GAS POC | $65.10 | $93.00 | $34.41–$3,678.00 | 30% | — source file |
| Ann & Robert H. Lurie Children's Hospital of Chicago Chicago, IL · (312) 227-4000 H POTASSIUM PLASMA OR SERUM | $65.10 | $93.00 | $34.41–$3,678.00 | 30% | — source file |
| Ann & Robert H. Lurie Children's Hospital of Chicago Chicago, IL · (312) 227-4000 H POTASSIUM SERUM PLASMA/WHOLE BLOOD | $65.10 | $93.00 | $34.41–$3,678.00 | 30% | — source file |
| Swedish Covenant Health Chicago, IL · (773) 878-8200 HB R POTASSIUM; SERUM (P) | $66.00 | $66.00 | — | — | Apr 1, 2026 source file |
| Endeavor Health Highland Park Hospital Highland Park, IL HB R POTASSIUM; SERUM (P) | $66.00 | $66.00 | — | — | Apr 1, 2026 source file |
| Northshore University Healthsystem - Evanston Hospital Evanston, IL · (847) 570-2000 HB R POTASSIUM; SERUM (P) | $66.00 | $66.00 | — | — | Apr 1, 2026 source file |
| Northshore University Healthsystem - Evanston Hospital Evanston, IL · (847) 570-2000 HB POTASSIUM, WHOLE BLOOD* | $67.00 | $67.00 | — | — | Apr 1, 2026 source file |
| Endeavor Health Highland Park Hospital Highland Park, IL HB POTASSIUM, I-STAT (P) | $67.00 | $67.00 | — | — | Apr 1, 2026 source file |
| Endeavor Health Highland Park Hospital Highland Park, IL HB POTASSIUM * (P) | $67.00 | $67.00 | — | — | Apr 1, 2026 source file |
| Endeavor Health Highland Park Hospital Highland Park, IL HB POTASSIUM, WHOLE BLOOD* | $67.00 | $67.00 | — | — | Apr 1, 2026 source file |
| Endeavor Health Highland Park Hospital Highland Park, IL HB POTASSIUM EMER CSU LAB (P) | $67.00 | $67.00 | — | — | Apr 1, 2026 source file |
| Northshore University Healthsystem - Evanston Hospital Evanston, IL · (847) 570-2000 HB POTASSIUM EMER CSU LAB (P) | $67.00 | $67.00 | — | — | Apr 1, 2026 source file |
| Northshore University Healthsystem - Evanston Hospital Evanston, IL · (847) 570-2000 HB POTASSIUM * (P) | $67.00 | $67.00 | — | — | Apr 1, 2026 source file |
| Northshore University Healthsystem - Evanston Hospital Evanston, IL · (847) 570-2000 HB POTASSIUM, I-STAT (P) | $67.00 | $67.00 | — | — | Apr 1, 2026 source file |
| Swedish Covenant Health Chicago, IL · (773) 878-8200 HB POTASSIUM, I-STAT (P) | $67.00 | $67.00 | — | — | Apr 1, 2026 source file |
| Swedish Covenant Health Chicago, IL · (773) 878-8200 HB POTASSIUM EMER CSU LAB (P) | $67.00 | $67.00 | — | — | Apr 1, 2026 source file |
| Swedish Covenant Health Chicago, IL · (773) 878-8200 HB POTASSIUM * (P) | $67.00 | $67.00 | — | — | Apr 1, 2026 source file |
| Swedish Covenant Health Chicago, IL · (773) 878-8200 HB POTASSIUM, WHOLE BLOOD* | $67.00 | $67.00 | — | — | Apr 1, 2026 source file |
| Franciscan Health Munster Munster, IN · (219) 922-4200 Assay of Serum Potassium-Oh | $67.52 | $317.00 | $3.76–$237.75 | 79% | — source file |
| Northwest Community Hospital Arlington Heights, IL · (847) 618-1000 Hb Potassium, Whole Blood Poct | $69.00 | $69.00 | — | — | Apr 1, 2026 source file |
| Northwest Community Hospital Arlington Heights, IL · (847) 618-1000 Hb Assay Of Serum Potassium | $69.00 | $69.00 | — | — | Apr 1, 2026 source file |
| Franciscan Health Crown Point Crown Point, IN · (219) 757-6100 Assay of Serum Potassium-Oh | $81.79 | $317.00 | $317.00 | 74% | — source file |
| Edward Hospital Naperville, IL · (630) 527-3000 HC POTASSIUM SERUM PLASMA OR WHOLE BLOOD | $96.00 | $96.00 | — | — | Apr 1, 2026 source file |
| Elmhurst Memorial Hospital Elmhurst, IL · (331) 221-1000 HC POTASSIUM SERUM PLASMA OR WHOLE BLOOD | $96.00 | $96.00 | — | — | Apr 1, 2026 source file |
| Franciscan Health Rensselaer Rensselaer, IN · (219) 866-5141 Assay of Serum Potassium-Oh | $113.49 | $317.00 | $4.26–$253.60 | 64% | — source file |
| Jackson Park Hospital Foundation Chicago, IL · (773) 947-7500 POTASSIUM SERUM | $117.88 | $147.35 | — | 20% | — source file |
| Uchicago Medicine Northwest Indiana Crown Point, IN · (312) 755-4706 HC POTASSIUM; SERUM, PLASMA OR WHOLE BLOOD | $129.00 | $129.00 | — | — | Apr 1, 2026 source file |
| Ingalls Memorial Hospital Harvey, IL · (708) 333-2300 Hc Potassium; Serum, Plasma Or Whole Blood | $129.00 | $129.00 | — | — | Apr 1, 2026 source file |
Inpatient: lowest $4.25, median $27.50, highest $129.00 — a 30.4× difference within the same market.
As an outpatient, the same code is billed by 63 facilities here, median $28.64 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 21 of 23 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 3 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 potassium test measures the level of potassium in the blood. Doctors check it for people on diuretics or blood pressure drugs, with kidney disease, an irregular heartbeat, or vomiting and diarrhea.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.