Magnesium test cost in Idaho
In Idaho, 9 hospitals publish a cash price for magnesium blood test: from $9.00 to $59.50, with a median of $30.00. The lowest price is at Kootenai Health (Coeur D'Alene). The highest price is 6.6× the lowest.
Outpatient cash prices, one line per hospital — its lowest listed price for code 83735. Prices for both sides of the body and inpatient prices are not mixed in. Collected Sep 23, 2026.
Hospitals in Idaho, cheapest first
| Hospital | Cash price | List price | File date |
|---|---|---|---|
| Kootenai Health lowest Coeur D'Alene · Coeur d'Alene, ID HC KH MAYO SUP24 ASSAY OF MAGNESIUM | $9.00 | $12.00 | Mar 27, 2026 source file |
| Saint Alphonsus Medical Center - Nampa Nampa · Boise City, ID HC Warde 3426900 Magnesium 24 Hour Urine | $15.60 | $24.00 | Mar 31, 2026 source file |
| Saint Alphonsus Regional Medical Center - Boise Boise · Boise City, ID HC Warde 3426900 Magnesium 24 Hour Urine | $15.60 | $24.00 | Mar 31, 2026 source file |
| St Luke's Magic Valley Regional Medical Center Twin Falls · Twin Falls, ID | $30.00 | $30.00 | — source file |
| St Luke's McCall McCall · McCall, ID | $30.00 | $30.00 | — source file |
| St Luke's Nampa Medical Center Nampa · Boise City, ID | $30.00 | $30.00 | — source file |
| St Luke's Regional Medical Center Boise · Boise City, ID | $30.00 | $30.00 | — source file |
| St Luke's Wood River Medical Center Ketchum · Hailey, ID | $30.00 | $30.00 | — source file |
| Bingham Memorial Hospital Blackfoot · Blackfoot, ID Magnesium level | $59.50 | $85.00 | Feb 2, 2026 source file |
By metro area
Each metro page compares every listing, including prices for both sides of the body.
| Metro area | Hospitals | Lowest | Median |
|---|---|---|---|
| Boise City, ID | 4 | $15.60 | $22.80 |
| Blackfoot, ID | 1 | $59.50 | $59.50 |
| Coeur d'Alene, ID | 1 | $9.00 | $9.00 |
| Hailey, ID | 1 | $30.00 | $30.00 |
| McCall, ID | 1 | $30.00 | $30.00 |
| Twin Falls, ID | 1 | $30.00 | $30.00 |
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.
Magnesium blood test in other states
- Alabama$71.78
- Alaska$71.76
- Arizona$10.04
- Arkansas$35.18
- California$106.08
- Colorado$42.56
- Connecticut$28.60
- Delaware$67.90
- Florida$13.20
- Georgia$83.85
- Hawaii$13.20
- Illinois$48.60
- Indiana$50.71
- Iowa$43.80
- Kansas$61.10
- Kentucky$83.86
- Louisiana$24.31
- Maine$41.27
- Maryland$17.62
- Massachusetts$32.42
- Michigan$23.35
- Minnesota$19.65
- Mississippi$8.80
- Missouri$36.63
- Montana$52.80
- Nebraska$24.42
- Nevada$59.81
- New Hampshire$32.19
- New Jersey$7.71
- New Mexico$76.20
- New York$27.88
- North Carolina$58.00
- North Dakota$12.81
- Ohio$33.30
- Oklahoma$32.50
- Oregon$30.00
- Pennsylvania$34.00
- Puerto Rico$10.00
- Rhode Island$52.70
- South Carolina$21.50
- South Dakota$37.60
- Tennessee$11.85
- Texas$22.05
- Utah$65.69
- Vermont$56.35
- Virginia$11.85
- Washington$49.20
- West Virginia$13.50
- Wisconsin$50.00
- Wyoming$13.96
Median cash price across the state's hospitals.