Lab tests CPT 83735 Illinois Outpatient

Magnesium test cost in Illinois

In Illinois, 65 hospitals publish a cash price for magnesium blood test: from $5.50 to $191.00, with a median of $48.60. The lowest price is at Roseland Community Hospital Association (Chicago). The highest price is 34.7× the lowest.

Outpatient cash prices, one line per hospital — its lowest listed price for code 83735. Prices for both sides of the body and inpatient prices are not mixed in. Collected Sep 23, 2026.

Lowest$5.50Roseland Community Hospital Association

Median$48.60half pay less

Highest$191.00in Illinois

Lowest saves$43.10vs the median

Hospitals in Illinois, cheapest first

Hospital	Cash price	List price	File date
Roseland Community Hospital Association lowest Chicago · Chicago-Naperville-Elgin, IL-IN Magnesium level	$5.50	$53.00	Jul 1, 2026 source file
Uchicago Medicine AdventHealth Bolingbrook Bolingbrook · Chicago-Naperville-Elgin, IL-IN HC MAGNESIUM URINE RANDOM	$5.75	$23.00	Apr 1, 2026 source file
Uchicago Medicine AdventHealth Glenoaks Glendale Heights · Chicago-Naperville-Elgin, IL-IN HC ASSAY OF MAGNESIUM - MAGNESIUM IONIZED	$5.75	$23.00	Apr 1, 2026 source file
Uchicago Medicine AdventHealth Hinsdale Hinsdale · Chicago-Naperville-Elgin, IL-IN HC MAGNESIUM URINE CALCULI RISK ASSESSMENT - ARUP	$5.75	$23.00	Apr 1, 2026 source file
Uchicago Medicine AdventHealth La Grange La Grange · Chicago-Naperville-Elgin, IL-IN HC MAGNESIUM SUPERSATURATION PROFILE, URINE - ARUP	$5.75	$23.00	Apr 1, 2026 source file
Mercy Medical Center Aurora · Chicago-Naperville-Elgin, IL-IN MAGNESIUM	$6.00	$240.00	Sep 1, 2026 source file
Saint Francis Hospital Evanston · Chicago-Naperville-Elgin, IL-IN HC ASSAY OF MAGNESIUM	$6.00	$187.00	Sep 1, 2026 source file
Gottlieb Memorial Hospital Melrose Park · Chicago-Naperville-Elgin, IL-IN Magnesium (Qurrsk)	$11.02	$58.00	Mar 31, 2026 source file
Deaconess Illinois Crossroads Mount Vernon · Mount Vernon, IL MAGNESIUM, URINE	$11.90	$34.00	Feb 3, 2026 source file
Deaconess Illinois Union County Hospital Anna · Anna, IL MAGNESIUM	$11.90	$34.00	Feb 3, 2026 source file
Heartland Regional Medical Center Marion · Marion-Herrin, IL MAGNESIUM, URINE	$11.90	$34.00	Feb 3, 2026 source file
Loyola University Medical Center Maywood · Chicago-Naperville-Elgin, IL-IN Magnesium (Qurrsk)	$13.34	$58.00	Mar 31, 2026 source file
Riverside Medical Center Kankakee · Kankakee, IL MAGNESIUM LEVEL	$16.77	$63.00	— source file
Trinity Medical Center Rock Island · Davenport-Moline-Rock Island, IA-IL ASSAY OF MAGNESIUM	$16.80	$21.00	Jan 28, 2026 source file
MercyOne Genesis Aledo Medical Center Aledo · Davenport-Moline-Rock Island, IA-IL Magnesium Urine - Sendout	$22.20	$37.00	Mar 31, 2026 source file
Louis A Weiss Memorial Hospital Chicago · Chicago-Naperville-Elgin, IL-IN 83735 MAGNESIUM	$23.27	$68.45	Mar 17, 2025 source file
The University of Chicago Medical Center Chicago · Chicago-Naperville-Elgin, IL-IN Hc Magnesium, Urine	$29.00	$29.00	Apr 1, 2026 source file
Advocate Childrens Hospital Oak Lawn Oak Lawn · Chicago-Naperville-Elgin, IL-IN MAGNESIUM SRDP	$30.00	$60.00	Nov 4, 2025 source file
Advocate Childrens Hospital Park Ridge Park Ridge · Chicago-Naperville-Elgin, IL-IN MAGNESIUM SRDP	$30.00	$60.00	Nov 4, 2025 source file
Advocate Christ Medical Center Oak Lawn · Chicago-Naperville-Elgin, IL-IN MAGNESIUM SRDP	$30.00	$60.00	Nov 4, 2025 source file
Advocate Condell Medical Center Libertyville · Chicago-Naperville-Elgin, IL-IN MAGNESIUM SRDP	$30.00	$60.00	Nov 4, 2025 source file
Advocate Good Samaritan Hospital Downers Grove · Chicago-Naperville-Elgin, IL-IN MAGNESIUM SRDP	$30.00	$60.00	Nov 4, 2025 source file
Advocate Good Shepherd Hospital Barrington · Chicago-Naperville-Elgin, IL-IN MAGNESIUM SRDP	$30.00	$60.00	Nov 4, 2025 source file
Advocate Illinois Masonic Medical Center Chicago · Chicago-Naperville-Elgin, IL-IN MAGNESIUM SRDP	$30.00	$60.00	Nov 4, 2025 source file
Advocate Lutheran General Hospital Park Ridge · Chicago-Naperville-Elgin, IL-IN MAGNESIUM SRDP	$30.00	$60.00	Nov 4, 2025 source file
Advocate Sherman Hospital Elgin · Chicago-Naperville-Elgin, IL-IN MAGNESIUM SRDP	$30.00	$60.00	Nov 4, 2025 source file
Advocate South Suburban Hospital Hazel Crest · Chicago-Naperville-Elgin, IL-IN MAGNESIUM SRDP	$30.00	$60.00	Nov 4, 2025 source file
Advocate Trinity Hospital Chicago · Chicago-Naperville-Elgin, IL-IN MAGNESIUM SRDP	$30.00	$60.00	Nov 4, 2025 source file
Humboldt Park Health North Francisco Chicago · Chicago-Naperville-Elgin, IL-IN Magnesium level	$39.10	$139.65	Aug 24, 2026 source file
Gateway Regional Medical Center Granite City · St. Louis, MO-IL L910235 MAGNESIUM, URINE	$40.20	$67.00	— source file
Resilience Healthcare West Suburban Medical Center Oak Park · Chicago-Naperville-Elgin, IL-IN Magnesium Level	$43.42	$127.70	Mar 17, 2025 source file
La Rabida Children's Hospital\|LaRabida Childrens Hospital Chicago · Chicago-Naperville-Elgin, IL-IN 24 URINE MG	$43.59	$43.59	Apr 1, 2026 source file
MercyOne Genesis Silvis Medical Center Silvis · Davenport-Moline-Rock Island, IA-IL Magnesium Urine - Sendout	$48.60	$81.00	Mar 31, 2026 source file
Shriners Childrens - Chicago Chicago · Chicago-Naperville-Elgin, IL-IN MAGNESIUM LEVEL	$57.50	$57.50	— source file
Presence Saint Joseph Hospital - Chicago Chicago · Chicago-Naperville-Elgin, IL-IN HC MAGNESIUM - RBC	$61.71	$187.00	— source file
Community First Medical Center Chicago · Chicago-Naperville-Elgin, IL-IN Magnesium level	$68.63	$137.25	Apr 1, 2026 source file
NorthShore University HealthSystems Evanston Hospital Evanson · Chicago-Naperville-Elgin, IL-IN Magnesium Urine*	$71.50	$110.00	— source file
NorthShore University HealthSystems Glenbrook Hospital Glenview · Chicago-Naperville-Elgin, IL-IN Magnesium Urine*	$71.50	$110.00	— source file
NorthShore University HealthSystems Highland Park Hospital Highland Park · Chicago-Naperville-Elgin, IL-IN Magnesium Urine*	$71.50	$110.00	— source file
NorthShore University HealthSystems Skokie Hospital Skokie · Chicago-Naperville-Elgin, IL-IN Magnesium Urine*	$71.50	$110.00	— source file
St Anthonys Memorial Hospital of the Hospital Sisters of the Third Order of St Francis Mattoon · Charleston-Mattoon, IL ASSAY OF MAGNESIUM	$72.00	$100.00	— source file
St Josephs Hospital Hospital Sisters Third Order of St Francis Breese · St. Louis, MO-IL ASSAY OF MAGNESIUM	$79.92	$111.00	— source file
Northwestern Lake Forest Hospital Lake Forest · Chicago-Naperville-Elgin, IL-IN HB Ref Magnesium (Q)	$81.20	$116.00	Apr 1, 2026 source file
Northwestern Medicine Central DuPage Hospital Winfield · Chicago-Naperville-Elgin, IL-IN HB Ref Magnesium RBC	$81.20	$116.00	Apr 1, 2026 source file
Northwestern Medicine Delnor Hospital Geneva · Chicago-Naperville-Elgin, IL-IN HB Ref Magnesum Level, Stool (Arup)	$81.20	$116.00	Apr 1, 2026 source file
Northwestern Medicine Kishwaukee Hospital DeKalb · Chicago-Naperville-Elgin, IL-IN HB Magnesium Level, Urine	$81.20	$116.00	Apr 1, 2026 source file
Northwestern Medicine Marianjoy Rehabilitation Hospital Wheaton · Chicago-Naperville-Elgin, IL-IN HB Ref Magnesium, Urine (Gva)	$81.20	$116.00	Apr 1, 2026 source file
Northwestern Medicine McHenry Hospital McHenry · Chicago-Naperville-Elgin, IL-IN HB Ref Genova Panel, Magnesium RBC (Gva)	$81.20	$116.00	Apr 1, 2026 source file
Northwestern Medicine Valley West Hospital Sandwich · Chicago-Naperville-Elgin, IL-IN HB Ref Litholink Serum Panel, Magnesium (Lc)	$81.20	$116.00	Apr 1, 2026 source file
Palos Community Hospital Palos Heights · Chicago-Naperville-Elgin, IL-IN HB Ref Cathartic Laxatives Profile, Magnesium, Stool (Q)	$81.20	$116.00	Apr 1, 2026 source file
Northwest Community Hospital Arlington Heights · Chicago-Naperville-Elgin, IL-IN Hb Magnesium,Rbc&Plasma	$100.00	$100.00	Apr 1, 2026 source file
Ann & Robert H. Lurie Children's Hospital of Chicago Chicago · Chicago-Naperville-Elgin, IL-IN H MAGNESIUM URINE 24-HOUR COLLECTION	$102.20	$146.00	— source file
St Josephs Hospital of the Hospital Sisters of the Third Order of St Francis Highland · St. Louis, MO-IL ASSAY OF MAGNESIUM	$102.24	$142.00	— source file
St Elizabeths Hospital of the Hospital Sisters of the Third Order of St Francis O'Fallon · St. Louis, MO-IL HC MAGNESIUM	$105.12	$146.00	— source file
St Johns Hospital of the Hospital Sisters of the Third Order of St Francis Springfield · Springfield, IL HC MAGNESIUM	$108.00	$150.00	— source file
St Francis Hospital Sisters of the Third Order of St Francis Litchfield · Litchfield, IL HC MAGNESIUM	$109.44	$152.00	— source file
Endeavor Health Clinical Operations Evanston · Chicago-Naperville-Elgin, IL-IN HB MAGNESIUM URINE*	$110.00	$110.00	Apr 1, 2026 source file
Endeavor Health Clinical Operations Highland Park · Chicago-Naperville-Elgin, IL-IN HB MAGNESIUM URINE*	$110.00	$110.00	Apr 1, 2026 source file
Swedish Covenant Health Chicago · Chicago-Naperville-Elgin, IL-IN HB MAGNESIUM URINE*	$110.00	$110.00	Apr 1, 2026 source file
Hshs Holy Family Hospital Greenville · St. Louis, MO-IL ASSAY OF MAGNESIUM	$114.48	$159.00	— source file
Edward Hospital Naperville · Chicago-Naperville-Elgin, IL-IN HC MAGNESIUM	$131.00	$131.00	Apr 1, 2026 source file
Elmhurst Memorial Hospital Elmhurst · Chicago-Naperville-Elgin, IL-IN HC MAGNESIUM	$131.00	$131.00	Apr 1, 2026 source file
Hshs Good Shepherd Hospital Shelbyville · Shelbyville, IL ASSAY OF MAGNESIUM	$140.40	$195.00	— source file
St Marys Hospital Decatur of Hospital Sisters of the Third Order of St Francis Decatur · Decatur, IL HC MAGNESIUM	$149.76	$208.00	— source file
Ingalls Memorial Hospital Harvey · Chicago-Naperville-Elgin, IL-IN Hc Magnesium, Urine	$191.00	$191.00	Apr 1, 2026 source file

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	48	$5.50	$43.50
St. Louis, MO-IL	5	$40.20	$102.24
Davenport-Moline-Rock Island, IA-IL	3	$16.80	$22.20
Anna, IL	1	$11.90	$11.90
Charleston-Mattoon, IL	1	$72.00	$72.00
Decatur, IL	1	$149.76	$149.76
Kankakee, IL	1	$16.77	$16.77
Litchfield, IL	1	$109.44	$109.44
Marion-Herrin, IL	1	$11.90	$11.90
Mount Vernon, IL	1	$11.90	$11.90
Shelbyville, IL	1	$140.40	$140.40
Springfield, IL	1	$108.00	$108.00

What it is

A magnesium test measures the level of magnesium in the blood. Doctors order it for muscle cramps or weakness, an irregular heartbeat, low potassium or calcium that does not correct, and for people on diuretics, long-term acid-reducing drugs or with kidney disease.

What the price covers

The price usually covers running the test. The blood draw (36415) is often billed as a separate line.

Magnesium blood test in other states

Median cash price across the state's hospitals.