Lab tests CPT 83735 Inpatient — admitted to hospital

Magnesium test cost in Peoria, IL — inpatient

In Peoria, IL, 1 hospital lists a cash price for magnesium blood test as an inpatient: from $25.77 to $25.77, with a median of $25.77. Across Illinois, the median is $71.50 at 90 hospitals.

Cash prices at 1 facility for code 83735, as an inpatient (admitted to hospital) . Collected Sep 28, 2026; the hospital files themselves were last updated between — and —.

Lowest$25.77Hopedale Medical Complex
Median$25.77half pay less
Highest$25.77in this market
Difference1.0×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 Peoria, IL.

median
Lowest $25.77Highest $57.17

Hospitals, cheapest first

HospitalCash price List priceInsurers payOff listFile date
Hopedale Medical Complex lowest Hopedale, IL · (309) 449-3321 MAGNESIUM 24 HR URINE $25.77 $36.81 $6.57–$7.94 30% —
source file
Hopedale Medical Complex Hopedale, IL · (309) 449-3321 MAGNESIUM URINE $57.17 $81.67 $6.57–$17.61 30% —
source file
Hopedale Medical Complex Hopedale, IL · (309) 449-3321 MAGNESIUM SERUM $57.17 $81.67 $6.57–$17.61 30% —
source file

Inpatient: lowest $25.77, median $25.77, highest $25.77.

As an outpatient, the same code is billed by 1 facility here, median $25.77 — that is the price to compare if you are not being admitted.

Cash or insurance?

At the one hospital here that publishes insurer rates for this code, the cash price is not below the highest rate a health plan has negotiated. 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 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.