Magnesium test at St. Rose Hospital
CPT 83735 · Hayward, CA
These are St. Rose Hospital'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 37 California hospitals we index that post a cash price for this service: lowest $16.55, median $117.60, highest $477.25. See every hospital.
Nearby hospitals, same service
| Hospital | Distance | Cash price | Gross charge | File date |
|---|---|---|---|---|
| Kaiser Foundation Hospital - Redwood City Redwood City, CA | 10.2 mi | $120.40 | $215.00 | 2026-04-01 |
| Kaiser Foundation Hospital - Fremont Fremont, CA | 12.8 mi | $120.40 | $215.00 | 2026-04-01 |
| Kaiser Foundation Hospital - Oakland/Richmond Oakland, CA | 14.8 mi | $120.40 | $215.00 | 2026-04-01 |
| Kaiser Foundation Hospital - South San Francisco South San Francisco, CA | 16.2 mi | $120.40 | $215.00 | 2026-04-01 |
| Kaiser Foundation Hospital - Walnut Creek Walnut Creek, CA | 18.5 mi | $120.40 | $215.00 | 2026-04-01 |
| Marinhealth Medical Center Greenbrae, CA | 32.0 mi | $160.27 | $267.12 | 2026-03-26 |
| Kaiser Foundation Hospital - Woodland Hills Woodland Hills, CA | 309.0 mi | $106.08 | $204.00 | 2026-04-01 |
| Providence Cedars Sinai Tarzana Medical Center Tarzana, CA | 312.6 mi | $103.25 | $295.00 | 2026-04-01 |
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 file | Setting | Cash | Gross | Insurer min – max |
|---|---|---|---|---|
| HC ASSAY OF MAGNESIUM CDM standard_charge_information[5828] | both | $162.18 | $318.00 | |
| HC MAGNESIUM QUANT URINE standard_charge_information[5284] | both | $17.85 | $35.00 | |
| HC ASSAY OF MAGNESIUM LAB standard_charge_information[5320] | both | $34.55 | $67.75 | |
| HC ASSAY OF MAGNESIUM CDM standard_charge_information[5828] | both | $4.30 | $8.43 | |
| HC ASSAY OF MAGNESIUM CDM standard_charge_information[5828] | outpatient | $55.59 | $109.00 | |
| Assay of magnesium standard_charge_information[326798] | outpatient | $6.57 – $83.83 |
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 St. Rose Hospital prices