Magnesium test cost in Naples, FL — inpatient
In Naples-Marco Island, FL, 2 hospitals list a cash price for magnesium blood test as an inpatient: from $6.16 to $60.00, with a median of $33.08. The lowest listed price is at Naples HMA — $26.92 less than the median here. Across Florida, the median is $14.30 at 149 hospitals.
Cash prices at 2 facilities for code 83735, as an inpatient (admitted to hospital) . Collected Sep 27, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Jul 1, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Naples-Marco Island, FL.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Naples HMA lowest Naples, FL Q10551 MG RBC ICP/MS | $6.16 | $25.66 | $6.16–$17.04 | 76% | Apr 1, 2026 source file |
| Naples HMA lowest Naples, FL Q10551 MG RBC ICP/MS | $6.16 | $25.66 | $6.16–$17.04 | 76% | Apr 1, 2026 source file |
| Naples HMA lowest Naples, FL Q10551 MG RBC ICP/MS | $6.16 | $25.66 | $6.16–$17.04 | 76% | Apr 1, 2026 source file |
| Naples HMA lowest Naples, FL Q442 MAGNESIUM | $6.16 | $25.66 | $6.16–$17.04 | 76% | Apr 1, 2026 source file |
| Naples HMA lowest Naples, FL Q442 MAGNESIUM | $6.16 | $25.66 | $6.16–$17.04 | 76% | Apr 1, 2026 source file |
| Naples HMA lowest Naples, FL Q442 MAGNESIUM | $6.16 | $25.66 | $6.16–$17.04 | 76% | Apr 1, 2026 source file |
| Naples HMA Naples, FL Q14460 MAGNESIUM | $7.50 | $31.26 | $7.50–$20.76 | 76% | Apr 1, 2026 source file |
| Naples HMA Naples, FL Q14460 MAGNESIUM | $7.50 | $31.26 | $7.50–$20.76 | 76% | Apr 1, 2026 source file |
| Naples HMA Naples, FL Q15565 MAGNESIUM | $7.50 | $31.26 | $7.50–$20.76 | 76% | Apr 1, 2026 source file |
| Naples HMA Naples, FL Q14460 MAGNESIUM | $7.50 | $31.26 | $7.50–$20.76 | 76% | Apr 1, 2026 source file |
| Naples HMA Naples, FL Q15565 MAGNESIUM | $7.50 | $31.26 | $7.50–$20.76 | 76% | Apr 1, 2026 source file |
| Naples HMA Naples, FL Q15565 MAGNESIUM | $7.50 | $31.26 | $7.50–$20.76 | 76% | Apr 1, 2026 source file |
| Naples HMA Naples, FL MAGNESIUM | $36.95 | $153.96 | $36.95–$102.23 | 76% | Apr 1, 2026 source file |
| Naples HMA Naples, FL MAGNESIUM | $36.95 | $153.96 | $36.95–$102.23 | 76% | Apr 1, 2026 source file |
| Naples HMA Naples, FL MAGNESIUM | $36.95 | $153.96 | $36.95–$102.23 | 76% | Apr 1, 2026 source file |
| Naples Community Hospital Naples, FL · (239) 624-5000 HC ASSAY OF MAGNESIUM - MAGNESIUM URINE | $60.00 | $150.00 | — | 60% | Jul 1, 2026 source file |
| Naples Community Hospital Naples, FL · (239) 624-5000 HC ASSAY OF MAGNESIUM - MAGNESIUM | $75.20 | $188.00 | — | 60% | Jul 1, 2026 source file |
Inpatient: lowest $6.16, median $33.08, highest $60.00 — a 9.7× difference within the same market.
As an outpatient, the same code is billed by 2 facilities here, median $32.70 — 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 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.
3 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 83735 ($47.00). Such a line is almost always a physician's fee billed separately, an assistant's share or a placeholder — a real charge, but not the price of the procedure itself.
| Naples HMA Naples, FLQ623 MG RBC ICP/MS | $2.66 | file |
| Naples HMA Naples, FLQ623 MG RBC ICP/MS | $2.66 | file |
| Naples HMA Naples, FLQ623 MG RBC ICP/MS | $2.66 | file |