Magnesium test cost in Charlotte, NC
In Charlotte-Concord-Gastonia, NC-SC, 16 hospitals list a cash price for magnesium blood test: from $19.00 to $127.00, with a median of $73.00. The lowest listed price is at MUSC Lancaster Medical Center — $54.00 less than the median here. Across North Carolina, the median is $58.00 at 37 hospitals.
Cash prices at 16 facilities across 13 cities 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 Dec 1, 2025 and Sep 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 Charlotte-Concord-Gastonia, NC-SC.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| MUSC Lancaster Medical Center lowest Lancaster, SC · (803) 286-1481 HB MAGRU MAG URINE (SEND OUT) | $19.00 | $38.00 | — | 50% | Apr 1, 2026 source file |
| MUSC Chester Regional Medical Center Chester, SC · (803) 581-3151 HB MAGRU MAG URINE (SEND OUT) | $19.50 | $39.00 | — | 50% | Apr 1, 2026 source file |
| MUSC Lancaster Medical Center Lancaster, SC · (803) 286-1481 HB MAGNESIUM URINE 24 HOUR (SEND OUT) | $21.50 | $43.00 | — | 50% | Apr 1, 2026 source file |
| MUSC Lancaster Medical Center Lancaster, SC · (803) 286-1481 HB MAG/CREAT U (SEND OUT) | $21.50 | $43.00 | — | 50% | Apr 1, 2026 source file |
| MUSC Chester Regional Medical Center Chester, SC · (803) 581-3151 HB MAG/CREAT U (SEND OUT) | $22.50 | $45.00 | — | 50% | Apr 1, 2026 source file |
| MUSC Lancaster Medical Center Lancaster, SC · (803) 286-1481 HB EFPO MAGNESIUM MA (SEND OUT) | $29.50 | $59.00 | — | 50% | Apr 1, 2026 source file |
| MUSC Chester Regional Medical Center Chester, SC · (803) 581-3151 HB EFPO MAGNESIUM MA (SEND OUT) | $32.00 | $64.00 | — | 50% | Apr 1, 2026 source file |
| MUSC Lancaster Medical Center Lancaster, SC · (803) 286-1481 HB MAGNESIUM URINE (SEND OUT) | $34.00 | $68.00 | — | 50% | Apr 1, 2026 source file |
| MUSC Chester Regional Medical Center Chester, SC · (803) 581-3151 HB MAGNESIUM | $35.00 | $70.00 | — | 50% | Apr 1, 2026 source file |
| MUSC Chester Regional Medical Center Chester, SC · (803) 581-3151 HB MAGNESIUM URINE 24 HOUR (SEND OUT) | $35.00 | $70.00 | — | 50% | Apr 1, 2026 source file |
| MUSC Chester Regional Medical Center Chester, SC · (803) 581-3151 HB MAGNESIUM URINE (SEND OUT) | $35.00 | $70.00 | — | 50% | Apr 1, 2026 source file |
| MUSC Chester Regional Medical Center Chester, SC · (803) 581-3151 HB MAGNESIUM STONE (SEND OUT) | $45.00 | $90.00 | — | 50% | Apr 1, 2026 source file |
| Piedmont Medical Center Fort Mill, SC MAGNESIUM/2 | $66.75 | $89.00 | $1.00–$96.13 | 25% | Apr 15, 2026 source file |
| Piedmont Medical Center Rock Hill, SC MAGNESIUM/2 | $66.75 | $89.00 | $1.00–$96.13 | 25% | Sep 1, 2026 source file |
| Carolinas Medical Center Charlotte, NC · (704) 355-2000 HC ASSAY OF MAGNESIUM | $73.00 | $146.00 | $6.83–$131.40 | 50% | Dec 5, 2025 source file |
| Carolinas Rehabilitation Charlotte, NC HC ASSAY OF MAGNESIUM | $73.00 | $146.00 | $6.83–$134.32 | 50% | Dec 5, 2025 source file |
| Carolinas Rehabilitation Belmont, NC HC ASSAY OF MAGNESIUM | $73.00 | $146.00 | $6.83–$134.32 | 50% | Dec 5, 2025 source file |
| Atrium Health Anson Wadesboro, NC · (704) 694-5131 HC ASSAY OF MAGNESIUM | $73.00 | $146.00 | $6.83–$138.70 | 50% | Dec 1, 2025 source file |
| Atrium Health Lincoln Lincolnton, NC · (980) 212-2000 HC ASSAY OF MAGNESIUM | $73.00 | $146.00 | $6.83–$138.70 | 50% | Dec 1, 2025 source file |
| Atrium Health Union Monroe, NC · (704) 283-3100 HC ASSAY OF MAGNESIUM | $73.00 | $146.00 | $6.83–$138.70 | 50% | Dec 4, 2025 source file |
| Atrium Health Pineville Charlotte, NC · (704) 379-5000 HC ASSAY OF MAGNESIUM | $73.00 | $146.00 | $6.83–$134.32 | 50% | Dec 5, 2025 source file |
| Atrium Health Pineville Charlotte, NC · (704) 379-5000 HC ASSAY OF MAGNESIUM | $73.00 | $146.00 | $6.83–$141.62 | 50% | Dec 5, 2025 source file |
| Carolinas Medical Center-Northeast Concord, NC · (704) 783-3000 HC ASSAY OF MAGNESIUM | $73.00 | $146.00 | $6.83–$138.70 | 50% | Dec 1, 2025 source file |
| Carolinas Medical Center Charlotte, NC · (704) 355-2000 HC ASSAY OF MAGNESIUM | $73.00 | $146.00 | $6.83–$131.40 | 50% | Dec 4, 2025 source file |
| Carolinas Medical Center Charlotte, NC · (704) 355-2000 HC ASSAY OF MAGNESIUM | $73.00 | $146.00 | $6.83–$134.32 | 50% | Dec 4, 2025 source file |
| Carolinas Medical Center Charlotte, NC · (704) 355-2000 HC ASSAY OF MAGNESIUM | $73.00 | $146.00 | $27.74–$146.00 | 50% | Dec 4, 2025 source file |
| Duke Health Lake Norman Hospital Mooresville, NC · (704) 660-4000 Magnesium Pnl | $100.98 | $374.00 | $58.65–$130.88 | 73% | — source file |
| Duke Health Lake Norman Hospital Mooresville, NC · (704) 660-4000 Magnesium | $100.98 | $374.00 | $108.83–$129.03 | 73% | — source file |
| Duke Health Lake Norman Hospital Mooresville, NC · (704) 660-4000 Magnesium | $100.98 | $374.00 | $58.65–$130.88 | 73% | — source file |
| Duke Health Lake Norman Hospital Mooresville, NC · (704) 660-4000 HC MAGNESIUM PNL | $100.98 | $374.00 | $32.84–$243.10 | 73% | — source file |
| Duke Health Lake Norman Hospital Mooresville, NC · (704) 660-4000 Magnesium Pnl | $100.98 | $374.00 | $108.83–$129.03 | 73% | — source file |
| MUSC Chester Regional Medical Center Chester, SC · (803) 581-3151 HB MAGNESIUM URINE 24 HR | $107.00 | $214.00 | — | 50% | Apr 1, 2026 source file |
| Gaston Memorial Hospital Mount Holly, NC CHG MAGNESIUM | $127.00 | $127.00 | $3.65–$120.65 | — | May 11, 2026 source file |
| Gaston Memorial Hospital Belmont, NC CHG MAGNESIUM | $127.00 | $127.00 | $3.65–$120.65 | — | May 11, 2026 source file |
| Gaston Memorial Hospital Gastonia, NC · (704) 834-4891 CHG MAGNESIUM | $127.00 | $127.00 | $3.65–$120.65 | — | May 11, 2026 source file |
| Piedmont Medical Center Rock Hill, SC MAGNESIUM/4 | $233.25 | $311.00 | $1.00–$311.00 | 25% | Sep 1, 2026 source file |
| Piedmont Medical Center Fort Mill, SC MAGNESIUM/4 | $233.25 | $311.00 | $1.00–$311.00 | 25% | Apr 15, 2026 source file |
| Piedmont Medical Center Fort Mill, SC MAGNESIUM | $237.75 | $317.00 | $1.00–$317.00 | 25% | Apr 15, 2026 source file |
| Piedmont Medical Center Rock Hill, SC MAGNESIUM | $237.75 | $317.00 | $1.00–$317.00 | 25% | Sep 1, 2026 source file |
| MUSC Lancaster Medical Center Lancaster, SC · (803) 286-1481 HB MAGNESIUM | $302.50 | $605.00 | — | 50% | Apr 1, 2026 source file |
| MUSC Lancaster Medical Center Lancaster, SC · (803) 286-1481 HB MAGNESIUM STONE (SEND OUT) | $302.50 | $605.00 | — | 50% | Apr 1, 2026 source file |
| MUSC Lancaster Medical Center Lancaster, SC · (803) 286-1481 HB MAGNESIUM URINE 24 HR | $302.50 | $605.00 | — | 50% | Apr 1, 2026 source file |
Outpatient: lowest $19.00, median $73.00, highest $127.00 — a 6.7× difference within the same market.
As an inpatient, the same code is billed by 16 facilities here, median $73.00. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
Cash or insurance?
At 11 of 14 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at none is it 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.