Magnesium test cost in New York, NY — inpatient
In New York-Newark-Jersey City, NY-NJ, 22 hospitals list a cash price for magnesium blood test as an inpatient: from $6.70 to $273.24, with a median of $8.27. The lowest listed price is at Hmh Hospitals — $1.57 less than the median here. Across New York, the median is $27.88 at 64 hospitals.
Cash prices at 22 facilities across 16 cities for code 83735, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Oct 28, 2025 and Aug 13, 2026.
Lowest$6.70Hmh Hospitals
Median$8.27half pay less
Highest$273.24in this market
Difference40.8×highest vs lowest
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in New York-Newark-Jersey City, NY-NJ.
median
Lowest $6.70Highest $273.24
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Hmh Hospitals lowest Neptune City, NJ MAGNESIUM QST | $6.70 | $138.00 | $22.91–$138.00 | 95% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ MAGNESIUM RBC ARUP | $6.70 | $138.00 | $22.91–$138.00 | 95% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ MAGNESIUM RANDOM U | $6.70 | $138.00 | $22.91–$138.00 | 95% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ RBC MG | $6.70 | $138.00 | $22.91–$138.00 | 95% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ MAGNESIUM RBC | $6.70 | $138.00 | $22.91–$138.00 | 95% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ MAGNESIUM 24 HR URINE | $6.70 | $138.00 | $22.91–$138.00 | 95% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ MAGNESIUM URINE RANDOM | $6.70 | $138.00 | $22.91–$138.00 | 95% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ MAGNESIUM | $6.70 | $138.00 | $22.91–$138.00 | 95% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ MAGNESIUM RBC QST | $6.70 | $138.00 | $22.91–$138.00 | 95% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ ASSAY OF MAGNESIUM | $6.70 | $138.00 | $22.91–$138.00 | 95% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ MAGNESIUM. | $6.70 | $138.00 | $22.91–$138.00 | 95% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ MAGNESIUM 24-HOUR URINE WITHOUT CREATININE QST | $6.70 | $138.00 | $22.91–$138.00 | 95% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ MAGNESIUM, RANDOM URINE QST | $6.70 | $138.00 | $22.91–$138.00 | 95% | Dec 31, 2025 source file |
| Morristown Medical Center Morristown, NJ · (973) 971-5450 Magnesium Urine 24 Hr | $7.71 | $84.00 | — | 91% | — source file |
| CentraState Medical Center Freehold Township, NJ · (732) 294-7012 Magnesium | $7.71 | $55.00 | — | 86% | — source file |
| CentraState Medical Center Freehold Township, NJ · (732) 294-7012 Magnesium Urine | $7.71 | $141.00 | — | 95% | — source file |
| CentraState Medical Center Freehold Township, NJ · (732) 294-7012 Magnesium RBC | $7.71 | $38.00 | — | 80% | — source file |
| Overlook Medical Center Summit, NJ · (908) 522-2000 Magnesium Urine 24 Hr | $7.71 | $62.00 | — | 88% | — source file |
| Newton Medical Center Newton, NJ · (973) 383-2121 Magnesium RBC | $7.71 | $274.00 | — | 97% | — source file |
| Newton Medical Center Newton, NJ · (973) 383-2121 Magnesium Urine | $7.71 | $56.00 | — | 86% | — source file |
| Newton Medical Center Newton, NJ · (973) 383-2121 Magnesium Urine 24 Hr | $7.71 | $274.00 | — | 97% | — source file |
| Newton Medical Center Newton, NJ · (973) 383-2121 Magnesium | $7.71 | $274.00 | — | 97% | — source file |
| Overlook Medical Center Summit, NJ · (908) 522-2000 Magnesium | $7.71 | $62.00 | — | 88% | — source file |
| Overlook Medical Center Summit, NJ · (908) 522-2000 Magnesium Urine | $7.71 | $62.00 | — | 88% | — source file |
| Overlook Medical Center Summit, NJ · (908) 522-2000 Magnesium RBC | $7.71 | $62.00 | — | 88% | — source file |
| Chilton Medical Center Pompton Plains, NJ · (973) 831-5000 Magnesium Stool | $7.71 | $97.00 | — | 92% | — source file |
| Chilton Medical Center Pompton Plains, NJ · (973) 831-5000 Magnesium RBC | $7.71 | $62.00 | — | 88% | — source file |
| Chilton Medical Center Pompton Plains, NJ · (973) 831-5000 Magnesium Urine | $7.71 | $62.00 | — | 88% | — source file |
| Chilton Medical Center Pompton Plains, NJ · (973) 831-5000 Magnesium | $7.71 | $153.00 | — | 95% | — source file |
| CentraState Medical Center Freehold Township, NJ · (732) 294-7012 Magnesium Urine 24 Hr | $7.71 | $60.00 | — | 87% | — source file |
| University Hospital Newark, NJ · (973) 972-4300 ASSAY OF MAGNESIUM | $7.71 | $133.17 | $5.36–$126.51 | 94% | Aug 13, 2026 source file |
| Morristown Medical Center Morristown, NJ · (973) 971-5450 Magnesium RBC | $7.71 | $84.00 | — | 91% | — source file |
| Morristown Medical Center Morristown, NJ · (973) 971-5450 Magnesium Urine | $7.71 | $84.00 | — | 91% | — source file |
| Morristown Medical Center Morristown, NJ · (973) 971-5450 Magnesium | $7.71 | $84.00 | — | 91% | — source file |
| NYU Langone Brooklyn, NY HC ASSAY OF MAGNESIUM | $8.04 | $62.00 | $5.08–$160.44 | 87% | Jan 1, 2026 source file |
| NYU Langone Mineola, NY HC ASSAY OF MAGNESIUM | $8.04 | $62.00 | $5.08–$160.44 | 87% | Jan 1, 2026 source file |
| NYU Langone New York, NY · (212) 263-7300 HC ASSAY OF MAGNESIUM | $8.04 | $62.00 | $5.08–$160.44 | 87% | Jan 1, 2026 source file |
| NYU Langone New York, NY · (212) 263-7300 HC ASSAY OF MAGNESIUM | $8.04 | $62.00 | $5.08–$160.44 | 87% | Jan 1, 2026 source file |
| NYU Langone Hospital?Suffolk Patchogue, NY HC ASSAY OF MAGNESIUM | $8.04 | $62.00 | $5.08–$160.44 | 87% | Jan 1, 2026 source file |
| Englewood Health Englewood, NJ · (201) 894-3000 Magnesium 83735 | $8.50 | $85.00 | $6.65–$68.00 | 90% | Feb 2, 2026 source file |
| The Valley Hospital Paramus, NJ · (201) 447-8000 ASSAY OF MAGNESIUM 6075134 | $9.60 | $16.00 | $5.36–$21.37 | 40% | — source file |
| The Valley Hospital Paramus, NJ · (201) 447-8000 MAGNESIUM ASSAY | $9.60 | $16.00 | $5.36–$21.37 | 40% | — source file |
| Englewood Health Englewood, NJ · (201) 894-3000 Urine Magnesi (Random)83735 | $10.00 | $100.00 | $7.82–$80.00 | 90% | Feb 2, 2026 source file |
| Englewood Health Englewood, NJ · (201) 894-3000 Urine Magnesi(24hr)*X*83735 | $11.80 | $118.00 | $9.23–$94.40 | 90% | Feb 2, 2026 source file |
| Englewood Health Englewood, NJ · (201) 894-3000 Magnesium 24 Hr *X*83735 | $14.90 | $149.00 | $11.65–$119.20 | 90% | Feb 2, 2026 source file |
| Englewood Health Englewood, NJ · (201) 894-3000 Magnesium RBC 83735 | $19.00 | $190.00 | $14.86–$152.00 | 90% | Feb 2, 2026 source file |
| The Valley Hospital Paramus, NJ · (201) 447-8000 ASSAY OF MAGNESIUM 6070791 | $19.20 | $32.00 | $5.36–$27.20 | 40% | — source file |
| Englewood Health Englewood, NJ · (201) 894-3000 Xpld-Urorisk-Mg 83735 | $21.50 | $215.00 | $16.81–$172.00 | 90% | Feb 2, 2026 source file |
| The Valley Hospital Paramus, NJ · (201) 447-8000 MAGU (6075127) | $27.60 | $46.00 | $5.36–$39.10 | 40% | — source file |
| The Valley Hospital Paramus, NJ · (201) 447-8000 MAGNESIUM RANDOM URINE | $27.60 | $46.00 | $5.36–$39.10 | 40% | — source file |
| The Valley Hospital Paramus, NJ · (201) 447-8000 Magnesium | $31.20 | $52.00 | $5.36–$44.20 | 40% | — source file |
| The Valley Hospital Paramus, NJ · (201) 447-8000 ASSAY OF MAGNESIUM 6070937 | $36.00 | $60.00 | $5.36–$51.00 | 40% | — source file |
| Mount Sinai Brooklyn Brooklyn, NY HC Magnesium Urine | $45.00 | $50.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Queens Long Island, NY HC Magnesium Urine | $45.00 | $50.00 | — | 10% | Apr 1, 2026 source file |
| The Mount Sinai Hospital New York, NY · (212) 241-7981 HC Magnesium Urine | $45.00 | $50.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Behavioral Health Center New York, NY HC Magnesium Urine | $45.00 | $50.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Morningside New York, NY HC Magnesium Urine | $45.00 | $50.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Behavioral Health Center New York, NY HC Magnesium Fecal | $54.00 | $60.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Morningside New York, NY HC Magnesium Fecal | $54.00 | $60.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Brooklyn Brooklyn, NY HC Magnesium Fecal | $54.00 | $60.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Queens Long Island, NY HC Magnesium Fecal | $54.00 | $60.00 | — | 10% | Apr 1, 2026 source file |
| The Mount Sinai Hospital New York, NY · (212) 241-7981 HC Magnesium Fecal | $54.00 | $60.00 | — | 10% | Apr 1, 2026 source file |
| HMH Carrier Behavioral Health Belle Mead, NJ MAGNESIUM QST | $55.20 | $138.00 | — | 60% | — source file |
| HMH Carrier Behavioral Health Belle Mead, NJ MAGNESIUM QST | $55.20 | $138.00 | — | 60% | — source file |
| Englewood Health Englewood, NJ · (201) 894-3000 Xpld - Assay of Magnesium 83735 | $58.70 | $587.00 | $45.90–$469.60 | 90% | Feb 2, 2026 source file |
| Mount Sinai Queens Long Island, NY HC Magnesium | $67.50 | $75.00 | — | 10% | Apr 1, 2026 source file |
| The Mount Sinai Hospital New York, NY · (212) 241-7981 HC Magnesium | $67.50 | $75.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Behavioral Health Center New York, NY HC Magnesium | $67.50 | $75.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Brooklyn Brooklyn, NY HC Magnesium | $67.50 | $75.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Morningside New York, NY HC Magnesium | $67.50 | $75.00 | — | 10% | Apr 1, 2026 source file |
| Maimonides Medical Center Brooklyn, NY · (718) 283-6000 URINE MAGNESIUM | $70.00 | $70.00 | — | — | Apr 1, 2026 source file |
| Maimonides Medical Center Brooklyn, NY · (718) 283-6000 MAGNESIUM | $70.00 | $70.00 | — | — | Apr 1, 2026 source file |
| Maimonides Medical Center Brooklyn, NY · (718) 283-6000 URINE MAGNESIUM BAT | $70.00 | $70.00 | — | — | Apr 1, 2026 source file |
| Mount Sinai Morningside New York, NY HC Assay of Magnesium | $72.00 | $80.00 | — | 10% | Apr 1, 2026 source file |
| The Mount Sinai Hospital New York, NY · (212) 241-7981 HC Assay of Magnesium | $72.00 | $80.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Behavioral Health Center New York, NY HC Assay of Magnesium | $72.00 | $80.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Queens Long Island, NY HC Assay of Magnesium | $72.00 | $80.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Brooklyn Brooklyn, NY HC Assay of Magnesium | $72.00 | $80.00 | — | 10% | Apr 1, 2026 source file |
| Nassau University Medical Center East Meadow, NY · (516) 572-0123 Magnesium Rbc | $82.84 | $118.34 | — | 30% | Oct 28, 2025 source file |
| Nassau University Medical Center East Meadow, NY · (516) 572-0123 Chem Se Magnesium | $82.84 | $118.34 | — | 30% | Oct 28, 2025 source file |
| The Valley Hospital Paramus, NJ · (201) 447-8000 MG RBC (LC) | $121.80 | $203.00 | $5.36–$172.55 | 40% | — source file |
| New York Eye and Ear Infirmary of Mount Sinai New York, NY · (212) 979-4000 BLOOD-MAGNESIUM | $273.24 | $303.60 | — | 10% | Apr 1, 2026 source file |
Inpatient: lowest $6.70, median $8.27, highest $273.24 — a 40.8× difference within the same market.
As an outpatient, the same code is billed by 50 facilities here, median $8.04 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 8 of 8 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 1 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.