Posted Price

Magnesium test at HSHS St. Elizabeth's Hospital

CPT 83735 · O Fallon, IL

Cash price$105.12
Gross charge$146.00
Insurer rates$3.80 – $146.00

These are HSHS St. Elizabeth's Hospital's own posted figures from its standard-charges file dated March 24, 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
Memorial Hospital
Belleville, IL
6.3 mi$93.60$156.002025-12-15
Gateway Regional Medical Center
Granite City, IL
12.7 mi$206.46$344.102026-03-30
Barnes Jewish Hospital
Saint Louis, MO
19.0 mi$91.80$153.002025-12-15
St. Louis Childrens Hospital
Saint Louis, MO
19.0 mi$31.20$52.002025-12-15
Christian Hospital Northeast
Saint Louis, MO
21.1 mi$93.60$156.002025-12-15
Alton Memorial Hospital
Alton, IL
26.3 mi$93.60$156.002025-12-15
Mercy Hospital South
Saint Louis, MO
26.5 mi$83.20$128.002026-06-10
Missouri Baptist Medical Center
Saint Louis, MO
28.3 mi$93.60$156.002025-12-15

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
HC MAGNESIUM
line 69832
both$105.12$146.00$3.80 – $146.00
HC MAGNESIUM-90 mod 90
line 123965
both$105.12$146.00$3.80 – $146.00
HC MAGNESIUM mod PO
line 346094
both$105.12$146.00$3.80 – $146.00
HC MAGNESIUM mod XE
line 346144
both$105.12$146.00$3.80 – $146.00
HC MAGNESIUM mod Q1
line 346194
both$105.12$146.00$3.80 – $146.00
HC MAGNESIUM mod 59
line 346244
both$105.12$146.00$3.80 – $146.00
HC MAGNESIUM mod 91
line 351674
both$105.12$146.00$3.80 – $146.00

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 HSHS St. Elizabeth's Hospital prices