Magnesium test cost in Manchester, NH — inpatient
In Manchester-Nashua, NH, 3 hospitals list a cash price for magnesium blood test as an inpatient: from $18.54 to $51.80, with a median of $40.17. The lowest listed price is at Monadnock Community Hospital — $21.63 less than the median here. Across New Hampshire, the median is $32.19 at 6 hospitals.
Cash prices at 3 facilities across 3 cities for code 83735, as an inpatient (admitted to hospital) . Collected Sep 22, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Apr 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 Manchester-Nashua, NH.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Monadnock Community Hospital lowest Peterborough, NH MAGNESIUM URINE-STONE | $18.54 | $30.90 | — | 40% | Apr 1, 2026 source file |
| St Joseph Hospital of Nashua Nashua, NH HC MAGNESIUM | $40.17 | $103.00 | — | 61% | — source file |
| St Joseph Hospital of Nashua Nashua, NH HC SO1 MAGNESIUM | $40.17 | $103.00 | — | 61% | — source file |
| St Joseph Hospital of Nashua Nashua, NH HC SO MAGNESIUM | $40.17 | $103.00 | — | 61% | — source file |
| Elliot Hospital Manchester, NH Hc Assay Of Magnesium | $51.80 | $140.00 | — | 63% | Apr 1, 2026 source file |
| Monadnock Community Hospital Peterborough, NH MAGNESIUM | $58.71 | $97.85 | — | 40% | Apr 1, 2026 source file |
| Monadnock Community Hospital Peterborough, NH MAGNESIUM RBC | $58.71 | $97.85 | — | 40% | Apr 1, 2026 source file |
| Monadnock Community Hospital Peterborough, NH MAGNESIUM URINE | $58.71 | $97.85 | — | 40% | Apr 1, 2026 source file |
Inpatient: lowest $18.54, median $40.17, highest $51.80 — a 2.8× difference within the same market.
As an outpatient, the same code is billed by 3 facilities here, median $40.17 — that is the price to compare if you are not being admitted.
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.