Lab tests CPT 84132 Illinois Outpatient

Potassium test cost in Illinois

In Illinois, 114 hospitals publish a cash price for potassium blood test: from $4.00 to $179.00, with a median of $44.80. The lowest price is at Mercy Medical Center (Aurora) and 3 other hospitals. The highest price is 44.8× the lowest.

Outpatient cash prices, one line per hospital — its lowest listed price for code 84132. Prices for both sides of the body and inpatient prices are not mixed in. Collected Sep 29, 2026. See them on a map

Lowest$4.00Mercy Medical Center + 3 more

Median$44.80half of hospitals charge less

Highest$179.00in Illinois

Lowest saves$40.80vs the median

Hospitals in Illinois, cheapest first

Hospital	Cash price	List price	File date
Mercy Medical Center lowest Aurora · Chicago-Naperville-Elgin, IL-IN POTASSIUM	$4.00	$101.00	Sep 1, 2026 source file
Saint Francis Hospital lowest Evanston · Chicago-Naperville-Elgin, IL-IN HC ASSAY OF SERUM POTASSIUM	$4.00	$42.00	Sep 1, 2026 source file
Saint Joseph Medical Center - Joliet lowest Joliet · Chicago-Naperville-Elgin, IL-IN POTASSIUM	$4.00	$94.00	Sep 1, 2026 source file
The Carle Foundation Hospital lowest Urbana · Champaign-Urbana, IL Potassium, Plasma Ref	$4.00	$4.00	Apr 15, 2026 source file
Uchicago Medicine AdventHealth Bolingbrook Bolingbrook · Chicago-Naperville-Elgin, IL-IN HC POTASSIUM LEVEL	$4.25	$17.00	Apr 1, 2026 source file
Uchicago Medicine AdventHealth Glenoaks Glendale Heights · Chicago-Naperville-Elgin, IL-IN HC POTASSIUM LEVEL	$4.25	$17.00	Apr 1, 2026 source file
Uchicago Medicine AdventHealth Hinsdale Hinsdale · Chicago-Naperville-Elgin, IL-IN HC POTASSIUM LEVEL	$4.25	$17.00	Apr 1, 2026 source file
Uchicago Medicine AdventHealth La Grange La Grange · Chicago-Naperville-Elgin, IL-IN HC POTASSIUM LEVEL	$4.25	$17.00	Apr 1, 2026 source file
Roseland Community Hospital Chicago · Chicago-Naperville-Elgin, IL-IN Blood potassium level	$5.50	$62.00	Jul 1, 2026 source file
John H. Stroger, Jr. Hospital Chicago · Chicago-Naperville-Elgin, IL-IN POTASSIUM SERUM	$8.40	$12.00	— source file
Mason District Hospital Havana · Havana, IL .OR POTASSIUM	$12.40	$15.50	— source file
Presence Saint Joseph Hospital - Chicago Chicago · Chicago-Naperville-Elgin, IL-IN HC I-STAT K (POTASSIUM)	$13.86	$42.00	— source file
Carle BroMenn Medical Center Normal · Bloomington, IL Potassium, Plasma Ref	$14.00	$14.00	Apr 15, 2026 source file
Northwestern Lake Forest Hospital Lake Forest · Chicago-Naperville-Elgin, IL-IN HB Potassium Epoc (POCT)	$15.40	$22.00	Apr 1, 2026 source file
Community First Medical Center Chicago · Chicago-Naperville-Elgin, IL-IN Blood potassium level	$16.75	$33.50	Apr 1, 2026 source file
Carle Eureka Hospital Eureka · Peoria, IL Potassium, Plasma Ref	$19.00	$19.00	Apr 15, 2026 source file
Humboldt Park Health Chicago · Chicago-Naperville-Elgin, IL-IN Blood potassium level	$19.40	$69.30	Aug 24, 2026 source file
Gottlieb Memorial Hospital Melrose Park · Chicago-Naperville-Elgin, IL-IN Istat Potassium (Iabg)	$19.57	$103.00	Mar 31, 2026 source file
MacNeal Hospital Berwyn · Chicago-Naperville-Elgin, IL-IN K Potassium - Ccl	$19.57	$103.00	Mar 31, 2026 source file
La Rabida Children's Hospital Chicago · Chicago-Naperville-Elgin, IL-IN ISTAT POTASSIUM	$21.30	$21.30	Apr 1, 2026 source file
Hoopeston Community Memorial Hospital Hoopeston · Danville, IL Potassium, Plasma Ref	$23.00	$23.00	Apr 15, 2026 source file
Midwest Medical Center Galena · Galena, IL Potassium Level	$23.21	$25.50	— source file
Loyola University Medical Center Maywood · Chicago-Naperville-Elgin, IL-IN Anes Analys Potassium Serum	$23.69	$103.00	Mar 31, 2026 source file
St Elizabeths Hospital of the Hospital Sisters of the Third Order of St Francis O'Fallon · St. Louis, MO-IL HC POTASSIUM	$25.92	$36.00	— source file
MercyOne Genesis Aledo Medical Center Aledo · Davenport-Moline-Rock Island, IA-IL GHS POTASSIUM (K)	$26.40	$44.00	Mar 31, 2026 source file
Advocate Childrens Hospital Oak Lawn Oak Lawn · Chicago-Naperville-Elgin, IL-IN POC POTASSIUM SERUM	$27.50	$55.00	Nov 4, 2025 source file
Advocate Childrens Hospital Park Ridge Park Ridge · Chicago-Naperville-Elgin, IL-IN POC POTASSIUM SERUM	$27.50	$55.00	Nov 4, 2025 source file
Advocate Christ Medical Center Oak Lawn · Chicago-Naperville-Elgin, IL-IN POC POTASSIUM SERUM	$27.50	$55.00	Nov 4, 2025 source file
Advocate Condell Medical Center Libertyville · Chicago-Naperville-Elgin, IL-IN POC POTASSIUM SERUM	$27.50	$55.00	Nov 4, 2025 source file
Advocate Good Samaritan Hospital Downers Grove · Chicago-Naperville-Elgin, IL-IN POC POTASSIUM SERUM	$27.50	$55.00	Nov 4, 2025 source file
Advocate Good Shepherd Hospital Barrington · Chicago-Naperville-Elgin, IL-IN POC POTASSIUM SERUM	$27.50	$55.00	Nov 4, 2025 source file
Advocate Illinois Masonic Medical Center Chicago · Chicago-Naperville-Elgin, IL-IN POC POTASSIUM SERUM	$27.50	$55.00	Nov 4, 2025 source file
Advocate Lutheran General Hospital Park Ridge · Chicago-Naperville-Elgin, IL-IN POC POTASSIUM SERUM	$27.50	$55.00	Nov 4, 2025 source file
Advocate Sherman Hospital Elgin · Chicago-Naperville-Elgin, IL-IN POC POTASSIUM SERUM	$27.50	$55.00	Nov 4, 2025 source file
Advocate South Suburban Hospital Hazel Crest · Chicago-Naperville-Elgin, IL-IN POC POTASSIUM SERUM	$27.50	$55.00	Nov 4, 2025 source file
Advocate Trinity Hospital Chicago · Chicago-Naperville-Elgin, IL-IN POC POTASSIUM SERUM	$27.50	$55.00	Nov 4, 2025 source file
Salem Township Hospital Salem · Centralia, IL HC POTASSIUM; SERUM	$27.59	$68.98	Dec 3, 2025 source file
Gateway Regional Medical Center Granite City · St. Louis, MO-IL POTASSIUM SER PL WB	$28.29	$47.15	— source file
St Johns Hospital of the Hospital Sisters of the Third Order of St Francis Springfield · Springfield, IL ASSAY OF SERUM POTASSIUM	$29.52	$41.00	— source file
Resilience Healthcare West Suburban Medical Center Oak Park · Chicago-Naperville-Elgin, IL-IN 84132 POTASSIUM SERUM PLASMA/WHOLE BLOOD	$29.79	$87.61	Mar 17, 2025 source file
MercyOne Genesis Silvis Medical Center Silvis · Davenport-Moline-Rock Island, IA-IL GHS POTASSIUM (K)	$30.00	$50.00	Mar 31, 2026 source file
Riverside Medical Center Kankakee · Kankakee, IL BLOOD POTASSIUM LEVEL	$31.94	$120.00	— source file
Morris Hospital Morris · Chicago-Naperville-Elgin, IL-IN Blood potassium level	$32.96	$137.00	Jun 30, 2026 source file
Trinity Rock Island Rock Island · Davenport-Moline-Rock Island, IA-IL HC ASSAY OF SERUM POTASSIUM	$33.57	$41.96	Jan 28, 2026 source file
Hopedale Medical Complex Hopedale · Peoria, IL POTASSIUM BLOOD	$37.31	$53.30	— source file
Heartland Regional Medical Center Marion · Marion-Herrin, IL HC POTASSIUM ISTAT	$37.67	$198.24	Feb 3, 2026 source file
Touchette Regional Hospital Cahokia Heights · St. Louis, MO-IL Potassium; serum, plasma or whole blood	$38.44	$62.00	— source file
Shriners Childrens - Chicago Chicago · Chicago-Naperville-Elgin, IL-IN ASSAY OF SERUM POTASSIUM	$39.40	$39.40	— source file
Northwestern Medicine Central DuPage Hospital Winfield · Chicago-Naperville-Elgin, IL-IN HB Potassium, Blood (Bg)	$41.30	$59.00	Apr 1, 2026 source file
Northwestern Medicine Delnor Hospital Geneva · Chicago-Naperville-Elgin, IL-IN HB Potassium, Blood (Bg)	$41.30	$59.00	Apr 1, 2026 source file
Northwestern Medicine Marianjoy Rehabilitation Hospital Wheaton · Chicago-Naperville-Elgin, IL-IN HB Potassium Level	$41.30	$59.00	Apr 1, 2026 source file
Northwestern Medicine McHenry Hospital McHenry · Chicago-Naperville-Elgin, IL-IN HB Potassium, Blood (Bg)	$41.30	$59.00	Apr 1, 2026 source file
Northwestern Memorial Hospital Chicago · Chicago-Naperville-Elgin, IL-IN HB Potassium, Blood (Bg)	$41.30	$59.00	Apr 1, 2026 source file
NorthShore University HealthSystems Glenbrook Hospital Glenview · Chicago-Naperville-Elgin, IL-IN R Potassium; Serum (P)	$42.90	$66.00	— source file
NorthShore University HealthSystems Skokie Hospital Skokie · Chicago-Naperville-Elgin, IL-IN R Potassium; Serum (P)	$42.90	$66.00	— source file
The University of Chicago Medical Center Chicago · Chicago-Naperville-Elgin, IL-IN Hc Potassium; Serum, Plasma Or Whole Blood-Laf	$43.00	$43.00	Apr 1, 2026 source file
Palos Community Hospital Palos Heights · Chicago-Naperville-Elgin, IL-IN HB Ref Potassium Serum Plasma/Whole Blood (Q)	$43.40	$62.00	Apr 1, 2026 source file
Northwestern Medicine Kishwaukee Hospital DeKalb · Chicago-Naperville-Elgin, IL-IN HB Potassium Istat (POCT)	$46.20	$66.00	Apr 1, 2026 source file
Northwestern Medicine Valley West Hospital Sandwich · Chicago-Naperville-Elgin, IL-IN HB Ref Genova Panel, Potassium RBC (Gva)	$46.20	$66.00	Apr 1, 2026 source file
Washington County Hospital Nashville · Nashville, IL LCHG POTASSIUM BLOOD	$48.80	$61.00	Jun 1, 2026 source file
Anderson Hospital Maryville · St. Louis, MO-IL POTASSIUM LEVEL	$49.90	$99.80	Feb 6, 2026 source file
Mercyhealth Hospital & Medical Center - Harvard Harvard · Chicago-Naperville-Elgin, IL-IN CHG POTASSIUM SERUM PLASMA/WHOLE BLOOD	$51.86	$69.15	Mar 1, 2026 source file
Louis A Weiss Memorial Hospital Chicago · Chicago-Naperville-Elgin, IL-IN Potassium Level	$52.39	$154.08	Mar 17, 2025 source file
Mercyhealth Crystal Lake Hospital & Medical Center Crystal Lake · Chicago-Naperville-Elgin, IL-IN CHG POTASSIUM SERUM PLASMA/WHOLE BLOOD	$52.92	$70.56	Mar 1, 2026 source file
Community Hospital of Staunton Staunton · St. Louis, MO-IL POTASSIUM LEVEL	$55.70	$111.40	Feb 9, 2026 source file
Deaconess Illinois Crossroads Mount Vernon · Mount Vernon, IL HC POTASSIUM ISTAT	$56.02	$254.62	Feb 3, 2026 source file
Hammond Henry Dist Hospital Geneseo · Davenport-Moline-Rock Island, IA-IL Blood potassium level	$56.70	$63.00	Jan 22, 2026 source file
Ferrell Hospital Community Foundation Eldorado · Eldorado, IL HC POTASSIUM B	$57.75	$77.00	Sep 22, 2026 source file
Deaconess Illinois Union County Hospital Anna · Anna, IL HC POTASSIUM B	$58.31	$157.59	Feb 3, 2026 source file
Morrison Community Hospital Morrison · Sterling, IL POTASSIUM - SERUM	$59.00	$59.00	— source file
Sarah Bush Lincoln Health Center Mattoon · Charleston-Mattoon, IL Blood potassium level	$60.00	$60.00	Jun 3, 2026 source file
Harrisburg Medical Center Harrisburg · Harrisburg, IL HC Potassium Serum	$60.80	$76.00	Mar 4, 2026 source file
Herrin Hospital Herrin · Marion-Herrin, IL HC Potassium Serum	$60.80	$76.00	Mar 4, 2026 source file
Memorial Hospital of Carbondale Carbondale · Carbondale, IL HC Potassium Serum	$60.80	$76.00	Mar 4, 2026 source file
St Joseph Memorial Hospital Murphysboro · Carbondale, IL HC Potassium Serum	$60.80	$76.00	Mar 4, 2026 source file
Hshs Holy Family Hospital Greenville · St. Louis, MO-IL HC POTASSIUM	$62.64	$87.00	— source file
Jersey Community Hospital Jerseyville · St. Louis, MO-IL Potassium Level	$63.00	$63.00	— source file
St Anthonys Memorial Hospital of the Hospital Sisters of the Third Order of St Francis Mattoon · Charleston-Mattoon, IL HC POTASSIUM	$64.08	$89.00	— source file
Rockford Memorial Hospital Rockford · Rockford, IL CHG POTASSIUM SERUM PLASMA/WHOLE BLOOD	$64.56	$86.08	Mar 1, 2026 source file
Hshs Good Shepherd Hospital Shelbyville · Shelbyville, IL HC POTASSIUM	$64.80	$90.00	— source file
Thomas H Boyd Memorial Hospital Carrollton · Carrollton, IL Blood potassium level	$64.80	$81.00	Jul 7, 2026 source file
Ann & Robert H. Lurie Children's Hospital of Chicago Chicago · Chicago-Naperville-Elgin, IL-IN H POTASSIUM PLASMA OR SERUM	$65.10	$93.00	— source file
Endeavor Health Highland Park Hospital Highland Park · Chicago-Naperville-Elgin, IL-IN HB R POTASSIUM; SERUM (P)	$66.00	$66.00	Apr 1, 2026 source file
Northshore University Healthsystem - Evanston Hospital Evanston · Chicago-Naperville-Elgin, IL-IN HB R POTASSIUM; SERUM (P)	$66.00	$66.00	Apr 1, 2026 source file
Swedish Covenant Health Chicago · Chicago-Naperville-Elgin, IL-IN HB R POTASSIUM; SERUM (P)	$66.00	$66.00	Apr 1, 2026 source file
Northwest Community Hospital Arlington Heights · Chicago-Naperville-Elgin, IL-IN Hb Assay Of Serum Potassium	$69.00	$69.00	Apr 1, 2026 source file
Sarah D Culbertson Memorial Hospital Rushville · Rushville, IL Blood potassium level	$71.10	$79.00	May 26, 2026 source file
St Josephs Hospital Hospital Sisters Third Order of St Francis Breese · St. Louis, MO-IL HC POTASSIUM	$72.00	$100.00	— source file
Carlinville Area Hospital Carlinville · St. Louis, MO-IL POTASSIUM	$72.10	$103.00	— source file
Fairfield Memorial Hospital Fairfield · Fairfield, IL POTASSIUM SERUM	$75.20	$94.00	— source file
Pana Community Hospital Pana · Taylorville, IL Potassium Level	$77.00	$77.00	— source file
FHN Memorial Hospital Freeport · Freeport, IL Blood potassium level	$78.58	$98.23	Jan 22, 2026 source file
St Josephs Hospital of the Hospital Sisters of the Third Order of St Francis Highland · St. Louis, MO-IL HC POTASSIUM	$79.20	$110.00	— source file
Illini Community Hospital Pittsfield · Pittsfield, IL HC ASSAY OF SERUM POTASSIUM - POTASSIUM	$80.12	$133.52	Jun 8, 2026 source file
City of Clinton Clinton · Clinton, IL Blood potassium level	$83.95	$83.95	Jun 8, 2026 source file
Fayette County Hospital Vandalia · Vandalia, IL Blood potassium level	$85.00	$85.00	Jun 12, 2026 source file
Crawford Memorial Hospital Robinson · Robinson, IL POTASSIUM-K-SERUM-84132	$87.20	$109.00	— source file
Blessing Hospital Quincy · Quincy, IL-MO HC ASSAY OF SERUM POTASSIUM - POTASSIUM	$90.53	$150.87	Jun 8, 2026 source file
Pinckneyville Community Hospital Pinckneyville · Pinckneyville, IL Blood potassium level	$92.00	$92.00	Jun 8, 2026 source file
St Marys Hospital Decatur of Hospital Sisters of the Third Order of St Francis Decatur · Decatur, IL HC POTASSIUM	$92.88	$129.00	— source file
Rochelle Community Hospital Rochelle · Rochelle, IL Blood potassium level	$93.00	$93.00	Aug 6, 2026 source file
St Francis Hospital Sisters of the Third Order of St Francis Litchfield · Litchfield, IL HC POTASSIUM	$95.04	$132.00	— source file
Edward Hospital Naperville · Chicago-Naperville-Elgin, IL-IN HC POTASSIUM SERUM PLASMA OR WHOLE BLOOD	$96.00	$96.00	Apr 1, 2026 source file
Elmhurst Memorial Hospital Elmhurst · Chicago-Naperville-Elgin, IL-IN HC POTASSIUM SERUM PLASMA OR WHOLE BLOOD	$96.00	$96.00	Apr 1, 2026 source file
Sparta Community Hospital Sparta · Sparta, IL POTASSIUM LEVEL	$97.50	$97.50	— source file
Gibson Community Hospital Gibson City · Champaign-Urbana, IL POTASSIUM SERUM	$100.00	$100.00	— source file
Carle Health Pekin Hospital Pekin · Peoria, IL Potassium, Serum	$102.00	$102.00	Apr 15, 2026 source file
Methodist Medical Center of Illinois Peoria · Peoria, IL Potassium, Serum	$102.00	$102.00	Apr 15, 2026 source file
Proctor Community Hospital Peoria · Peoria, IL Potassium, Serum	$102.00	$102.00	Apr 15, 2026 source file
County of Clay Flora · Flora, IL LCHG POTASSIUM BLOOD	$104.00	$104.00	May 7, 2026 source file
Jackson Park Hospital Foundation Chicago · Chicago-Naperville-Elgin, IL-IN POTASSIUM SERUM	$117.88	$147.35	— source file
Ingalls Memorial Hospital Harvey · Chicago-Naperville-Elgin, IL-IN Hc Potassium; Serum, Plasma Or Whole Blood	$129.00	$129.00	Apr 1, 2026 source file
Vista Medical Center East Waukegan · Chicago-Naperville-Elgin, IL-IN POTASSIUM SER PL WB	$149.64	$149.64	— source file
Richland Memorial Hospital Olney · Olney, IL Potassium, Serum	$179.00	$179.00	Apr 15, 2026 source file

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

File date When the hospital last updated its price file, as the file says itself. A dash means the file gives no date.

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

By metro area

Each metro page compares every listing, including prices for both sides of the body.

Metro area	Hospitals	Lowest	Median
Chicago-Naperville-Elgin, IL-IN	55	$4.00	$27.50
St. Louis, MO-IL	10	$25.92	$59.17
Peoria, IL	5	$19.00	$102.00
Davenport-Moline-Rock Island, IA-IL	4	$26.40	$31.78
Carbondale, IL	2	$60.80	$60.80
Champaign-Urbana, IL	2	$4.00	$52.00
Charleston-Mattoon, IL	2	$60.00	$62.04
Marion-Herrin, IL	2	$37.67	$49.24
Anna, IL	1	$58.31	$58.31
Bloomington, IL	1	$14.00	$14.00
Carrollton, IL	1	$64.80	$64.80
Clinton, IL	1	$83.95	$83.95
Centralia, IL	1	$27.59	$27.59
Danville, IL	1	$23.00	$23.00
Decatur, IL	1	$92.88	$92.88
Eldorado, IL	1	$57.75	$57.75
Fairfield, IL	1	$75.20	$75.20
Flora, IL	1	$104.00	$104.00
Freeport, IL	1	$78.58	$78.58
Galena, IL	1	$23.21	$23.21
Harrisburg, IL	1	$60.80	$60.80
Havana, IL	1	$12.40	$12.40
Kankakee, IL	1	$31.94	$31.94
Litchfield, IL	1	$95.04	$95.04
Mount Vernon, IL	1	$56.02	$56.02
Nashville, IL	1	$48.80	$48.80
Olney, IL	1	$179.00	$179.00
Pinckneyville, IL	1	$92.00	$92.00
Pittsfield, IL	1	$80.12	$80.12
Quincy, IL-MO	1	$90.53	$90.53
Robinson, IL	1	$87.20	$87.20
Rushville, IL	1	$71.10	$71.10
Rochelle, IL	1	$93.00	$93.00
Rockford, IL	1	$64.56	$64.56
Shelbyville, IL	1	$64.80	$64.80
Sparta, IL	1	$97.50	$97.50
Springfield, IL	1	$29.52	$29.52
Sterling, IL	1	$59.00	$59.00
Taylorville, IL	1	$77.00	$77.00
Vandalia, IL	1	$85.00	$85.00

Market A metro area (as the Census Bureau defines it) or, outside metro areas, a town. Each links to every hospital price there.

Hospitals How many hospitals publish a cash price for this code here. Each hospital counts once, at its lowest outpatient cash price.

Lowest The lowest cash price among those hospitals.

Median The middle cash price: half of the hospitals charge less, half charge more. One price per hospital. More

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.

Potassium blood test in other states

Median cash price across the state's hospitals.