Magnesium test cost in Boulder, CO
In Boulder, CO, 1 hospital lists a cash price for magnesium blood test: from $107.30 to $107.30, with a median of $107.30. Across Colorado, the median is $42.56 at 17 hospitals.
Cash prices at 1 facility for code 83735, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 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 Boulder, CO.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| AdventHealth Avista lowest Louisville, CO · (303) 673-1000 HC MAGNESIUM LEVEL | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Avista lowest Louisville, CO · (303) 673-1000 HC MAGNESIUM URINE RANDOM | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Avista lowest Louisville, CO · (303) 673-1000 HC ASSAY OF MAGNESIUM - MAGNESIUM RBC | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Avista lowest Louisville, CO · (303) 673-1000 HC CVICU IONIZED MAGNESIUM POC | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Avista lowest Louisville, CO · (303) 673-1000 HC ASSAY OF MAGNESIUM - MAGNESIUM IONIZED | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Avista lowest Louisville, CO · (303) 673-1000 HC MAGNESIUM SUPERSATURATION PROFILE, URINE - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Avista lowest Louisville, CO · (303) 673-1000 HC MAGNESIUM, URINE - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Avista lowest Louisville, CO · (303) 673-1000 HC MAGNESIUM TIMED URINE | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Avista lowest Louisville, CO · (303) 673-1000 HC MAGNESIUM URINE CALCULI RISK ASSESSMENT - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Avista lowest Louisville, CO · (303) 673-1000 HC MAGNESIUM - SUPERSATURATION PROFILE, URINE - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Avista lowest Louisville, CO · (303) 673-1000 HC MAGNESIUM RBC - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
Outpatient: lowest $107.30, median $107.30, highest $107.30.
As an inpatient, the same code is billed by 1 facility here, median $107.30. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
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.