Magnesium test at Gateway Regional Medical Center
CPT 83735 · Granite City, IL
These are Gateway Regional Medical Center's own posted figures from its standard-charges file dated March 30, 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
| Hospital | Distance | Cash price | Gross charge | File date |
|---|---|---|---|---|
| Christian Hospital Northeast Saint Louis, MO | 8.9 mi | $93.60 | $156.00 | 2025-12-15 |
| Barnes Jewish Hospital Saint Louis, MO | 11.0 mi | $91.80 | $153.00 | 2025-12-15 |
| St. Louis Childrens Hospital Saint Louis, MO | 11.0 mi | $31.20 | $52.00 | 2025-12-15 |
| HSHS St. Elizabeth's Hospital O Fallon, IL | 12.7 mi | $105.12 | $146.00 | 2026-03-24 |
| Memorial Hospital Belleville, IL | 13.4 mi | $93.60 | $156.00 | 2025-12-15 |
| Alton Memorial Hospital Alton, IL | 15.6 mi | $93.60 | $156.00 | 2025-12-15 |
| Ranken Jordan Pediatric Bridge Hospital Maryland Heights, MO | 19.2 mi | $20.15 | $25.18 | 2026-04-24 |
| Missouri Baptist Medical Center Saint Louis, MO | 19.6 mi | $93.60 | $156.00 | 2025-12-15 |
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 file | Setting | Cash | Gross | Insurer min – max |
|---|---|---|---|---|
| Q442 MAGNESIUM line 3774 | outpatient | $206.46 | $344.10 | $344.10 – $344.10 |
| Q442 MAGNESIUM line 1308 | inpatient | $206.46 | $344.10 | $344.10 – $344.10 |
| L910235 MAGNESIUM, URINE line 6246 | inpatient | $40.20 | $67.00 | $67.00 – $67.00 |
| Q442 MAGNESIUM mod 90 line 7048 | inpatient | $206.46 | $344.10 | $344.10 – $344.10 |
| L910235 MAGNESIUM, URINE line 8944 | outpatient | $40.20 | $67.00 | $67.00 – $67.00 |
| Q442 MAGNESIUM mod 90 line 9746 | outpatient | $206.46 | $344.10 | $344.10 – $344.10 |
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 Gateway Regional Medical Center prices