Magnesium test cost in Tucson, AZ — inpatient
In Tucson, AZ, 3 hospitals list a cash price for magnesium blood test as an inpatient: from $5.04 to $8.42, with a median of $8.11. The lowest listed price is at Tucson Medical Center — $3.07 less than the median here. Across Arizona, the median is $10.04 at 36 hospitals.
Cash prices at 3 facilities for code 83735, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Mar 2, 2026 and Apr 30, 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 Tucson, AZ.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Tucson Medical Center lowest Tucson, AZ · (520) 324-1399 HC Magnesium | $5.04 | $18.00 | — | 72% | Apr 30, 2026 source file |
| Tucson Medical Center lowest Tucson, AZ · (520) 324-1399 HC Magnesium | $5.04 | $18.00 | — | 72% | Apr 30, 2026 source file |
| Tucson Medical Center Tucson, AZ · (520) 324-1399 HC Magnesium Urine | $5.60 | $20.00 | — | 72% | Apr 30, 2026 source file |
| Tucson Medical Center Tucson, AZ · (520) 324-1399 HC Magnesium Urine | $5.60 | $20.00 | — | 72% | Apr 30, 2026 source file |
| Banner University Med Center South Tucson, AZ · (520) 874-2000 LAB MAGNESIUM URINE | $8.11 | $52.00 | $23.40–$41.60 | 84% | Mar 2, 2026 source file |
| Banner University Medical Center Tucson Tucson, AZ · (520) 874-4189 LAB MAGNESIUM URINE | $8.42 | $52.00 | $23.40–$41.60 | 84% | Mar 2, 2026 source file |
| Banner University Med Center South Tucson, AZ · (520) 874-2000 LAB MAGNESIUM NS | $13.73 | $88.00 | $39.60–$70.40 | 84% | Mar 2, 2026 source file |
| Banner University Med Center South Tucson, AZ · (520) 874-2000 LAB MAGNESIUM | $14.20 | $91.00 | $40.95–$72.80 | 84% | Mar 2, 2026 source file |
| Banner University Medical Center Tucson Tucson, AZ · (520) 874-4189 LAB MAGNESIUM NS | $14.26 | $88.00 | $39.60–$70.40 | 84% | Mar 2, 2026 source file |
| Banner University Medical Center Tucson Tucson, AZ · (520) 874-4189 LAB MAGNESIUM | $14.74 | $91.00 | $40.95–$72.80 | 84% | Mar 2, 2026 source file |
| Tucson Medical Center Tucson, AZ · (520) 324-1399 HC Magnesium, Fecal | $16.24 | $58.00 | — | 72% | Apr 30, 2026 source file |
| Tucson Medical Center Tucson, AZ · (520) 324-1399 HC Magnesium, Fecal | $16.24 | $58.00 | — | 72% | Apr 30, 2026 source file |
| Tucson Medical Center Tucson, AZ · (520) 324-1399 HC Magnesium RBC | $26.26 | $93.77 | — | 72% | Apr 30, 2026 source file |
| Tucson Medical Center Tucson, AZ · (520) 324-1399 HC Magnesium RBC | $26.26 | $93.77 | — | 72% | Apr 30, 2026 source file |
Inpatient: lowest $5.04, median $8.11, highest $8.42 — a 1.7× difference within the same market.
As an outpatient, the same code is billed by 3 facilities here, median $8.11 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 2 of 2 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 2 it is below every plan's rate. 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.
2 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 83735 ($43.50). 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.
| Banner University Med Center South Tucson, AZLAB MAGNESIUM STOOL | $3.28 | file |
| Banner University Medical Center Tucson Tucson, AZLAB MAGNESIUM STOOL | $3.40 | file |