Posted Price

Magnesium test at Northwestern Medicine McHenry

CPT 83735 · McHenry, IL

Cash price$81.20
Gross charge$116.00
Insurer rates$22.39 – $116.00

These are Northwestern Medicine McHenry's own posted figures from its standard-charges file dated April 1, 2026. They are not a quote. Source: the hospital's file · its price transparency page.

Across 40 Illinois hospitals we index that post a cash price for this service: lowest $5.50, median $80.60, highest $206.46. See every hospital.

Nearby hospitals, same service

HospitalDistanceCash priceGross chargeFile date
Advocate Good Shepherd Hospital
Barrington, IL
14.3 mi$50.00$100.002025-11-04
Advocate Condell Medical Center
Libertyville, IL
18.0 mi$70.00$140.002025-11-04
Advocate Sherman Hospital
Elgin, IL
20.0 mi$80.00$160.002025-11-04
Northwestern Lake Forest Hospital
Lake Forest, IL
22.8 mi$81.20$116.002026-04-01
Northwestern Medicine Delnor Community Hospital
Geneva, IL
31.3 mi$81.20$116.002026-04-01
Advocate Lutheran General Hospital
Park Ridge, IL
31.7 mi$50.00$100.002025-11-04
Northwestern Medicine Central Dupage Hospital
Winfield, IL
32.3 mi$81.20$116.002026-04-01
Elmhurst Memorial Hospital
Elmhurst, IL
34.9 mi$131.00$131.002026-04-01

Distances are straight-line from ZIP code centers. Each hospital's figures come from its own file; files are updated on different dates.

Every row for CPT 83735 in this hospital's file

Row in the hospital's fileSettingCashGrossInsurer min – max
HB Magnesium Level
standard_charge_information[2323]
outpatient$81.20$116.00$22.39 – $116.00
HB Ref Genova Panel, Magnesium RBC (Gva)
standard_charge_information[2689]
outpatient$81.20$116.00$22.39 – $116.00
HB Ref Kidney Stone, Magnesium Assay (Lc)
standard_charge_information[2786]
outpatient$81.20$116.00$22.39 – $116.00
HB Ref Magnesium RBC
standard_charge_information[2819]
outpatient$81.20$116.00$22.39 – $116.00
HB Ref Electrolyte & Osmolality Panel, Feces, Magnesium (Mayo)
standard_charge_information[10694]
outpatient$81.20$116.00$22.39 – $116.00
HB Ref Kidney Stone Risk Assessr, Magnesium (Q)
standard_charge_information[10872]
outpatient$81.20$116.00$22.39 – $116.00
HB Ref Litholink Serum Panel, Magnesium (Lc)
standard_charge_information[10895]
outpatient$81.20$116.00$22.39 – $116.00

The first row is the one used above. A price for one code usually covers the hospital's facility charge only; the doctor, anesthesia, pathology and other services can be billed separately. Ask the hospital for a good faith estimate before a scheduled service: if you pay yourself and the bill comes in $400 or more above the estimate, you can dispute it under the No Surprises Act.

Check a bill from this hospital All Northwestern Medicine McHenry prices