Magnesium test cost in Philadelphia, PA — inpatient
In Philadelphia-Camden-Wilmington, PA-NJ-DE-MD, 14 hospitals list a cash price for magnesium blood test as an inpatient: from $22.70 to $72.80, with a median of $34.00. The lowest listed price is at Inspira Medical Center Elmer and 3 other hospitals — $11.30 less than the median here. Across Pennsylvania, the median is $34.00 at 64 hospitals.
Cash prices at 14 facilities across 13 cities for code 83735, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Mar 24, 2026 and Apr 1, 2026.
Lowest$22.70Inspira Medical Center Elmer + 3 more
Median$34.00half pay less
Highest$72.80in this market
Difference3.2×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 Philadelphia-Camden-Wilmington, PA-NJ-DE-MD.
median
Lowest $22.70Highest $246.00
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Inspira Medical Center Elmer lowest Elmer, NJ · (856) 363-1000 MAGNESIUM URINE | $22.70 | $22.70 | — | — | Mar 24, 2026 source file |
| Inspira Health Center Woodbury lowest Woodbury, NJ MAGNESIUM | $22.70 | $22.70 | — | — | Mar 24, 2026 source file |
| Inspira Medical Center Elmer lowest Elmer, NJ · (856) 363-1000 MAGNESIUM | $22.70 | $22.70 | — | — | Mar 24, 2026 source file |
| Inspira Medical Center Mullica Hill lowest Mullica Hill, NJ MAGNESIUM URINE | $22.70 | $22.70 | — | — | Mar 24, 2026 source file |
| Inspira Medical Center Mullica Hill lowest Mullica Hill, NJ MAGNESIUM | $22.70 | $22.70 | — | — | Mar 24, 2026 source file |
| Inspira Medical Center Mannington lowest Salem, NJ MAGNESIUM URINE | $22.70 | $22.70 | — | — | Mar 24, 2026 source file |
| Inspira Medical Center Mannington lowest Salem, NJ MAGNESIUM | $22.70 | $22.70 | — | — | Mar 24, 2026 source file |
| Inspira Health Center Woodbury lowest Woodbury, NJ MAGNESIUM URINE | $22.70 | $22.70 | — | — | Mar 24, 2026 source file |
| Paoli Hospital Paoli, PA · (610) 648-1000 Hc Lax Magnesium | $34.00 | $85.00 | — | 60% | Apr 1, 2026 source file |
| The Bryn Mawr Hospital Bryn Mawr, PA · (610) 526-3000 Hc Lax Magnesium | $34.00 | $85.00 | — | 60% | — source file |
| Lankenau Medical Center Wynnewood, PA · (610) 645-2000 Hc Lax Magnesium | $34.00 | $85.00 | — | 60% | Apr 1, 2026 source file |
| Riddle Memorial Hospital Media, PA · (610) 566-9400 Hc Lax Magnesium | $34.00 | $85.00 | — | 60% | Apr 1, 2026 source file |
| Bryn Mawr Rehabilitation Hospital Malvern, PA Hc Lax Magnesium | $34.00 | $85.00 | — | 60% | — source file |
| Paoli Hospital Paoli, PA · (610) 648-1000 Hc Magnesium | $37.60 | $94.00 | — | 60% | Apr 1, 2026 source file |
| Lankenau Medical Center Wynnewood, PA · (610) 645-2000 Hc Magnesium | $37.60 | $94.00 | — | 60% | Apr 1, 2026 source file |
| Lankenau Medical Center Wynnewood, PA · (610) 645-2000 Hc Magnesium, Rbc | $37.60 | $94.00 | — | 60% | Apr 1, 2026 source file |
| Lankenau Medical Center Wynnewood, PA · (610) 645-2000 Hc Stnrdq Magnesium 300 | $37.60 | $94.00 | — | 60% | Apr 1, 2026 source file |
| Paoli Hospital Paoli, PA · (610) 648-1000 Hc Magnesium, Rbc | $37.60 | $94.00 | — | 60% | Apr 1, 2026 source file |
| Paoli Hospital Paoli, PA · (610) 648-1000 Hc Stnrdq Magnesium 300 | $37.60 | $94.00 | — | 60% | Apr 1, 2026 source file |
| Riddle Memorial Hospital Media, PA · (610) 566-9400 Hc Magnesium | $37.60 | $94.00 | — | 60% | Apr 1, 2026 source file |
| Riddle Memorial Hospital Media, PA · (610) 566-9400 Hc Magnesium, Rbc | $37.60 | $94.00 | — | 60% | Apr 1, 2026 source file |
| Riddle Memorial Hospital Media, PA · (610) 566-9400 Hc Stnrdq Magnesium 300 | $37.60 | $94.00 | — | 60% | Apr 1, 2026 source file |
| The Bryn Mawr Hospital Bryn Mawr, PA · (610) 526-3000 Hc Magnesium | $37.60 | $94.00 | — | 60% | — source file |
| The Bryn Mawr Hospital Bryn Mawr, PA · (610) 526-3000 Hc Magnesium, Rbc | $37.60 | $94.00 | — | 60% | — source file |
| The Bryn Mawr Hospital Bryn Mawr, PA · (610) 526-3000 Hc Stnrdq Magnesium 300 | $37.60 | $94.00 | — | 60% | — source file |
| Bryn Mawr Rehabilitation Hospital Malvern, PA Hc Magnesium | $37.60 | $94.00 | — | 60% | — source file |
| Bryn Mawr Rehabilitation Hospital Malvern, PA Hc Magnesium, Rbc | $37.60 | $94.00 | — | 60% | — source file |
| Bryn Mawr Rehabilitation Hospital Malvern, PA Hc Stnrdq Magnesium 300 | $37.60 | $94.00 | — | 60% | — source file |
| Nemours Children's Hospital Wilmington, DE · (302) 651-4000 Supersaturation Profile 24 Hour Urine Component 4 | $39.00 | $39.00 | — | — | — source file |
| Nemours Children's Hospital Wilmington, DE · (302) 651-4000 Supersaturation Profile 24 Hour Urine Component 4 | $39.00 | $39.00 | — | — | — source file |
| St Mary Medical Center Langhorne, PA · (215) 750-2003 HC Quest 15565 Magnesium 24 Hour Urine | $42.90 | $66.00 | $6.60–$92.08 | 35% | Mar 31, 2026 source file |
| St Mary Medical Center Langhorne, PA · (215) 750-2003 HC Quest 14460 Magnesium Urine | $42.90 | $66.00 | $6.60–$92.08 | 35% | Mar 31, 2026 source file |
| St Mary Medical Center Langhorne, PA · (215) 750-2003 HC Magnesium Urine | $42.90 | $66.00 | $6.60–$92.08 | 35% | Mar 31, 2026 source file |
| St Mary Medical Center Langhorne, PA · (215) 750-2003 HC Quest 442 Magnesium 24 Hour Urine | $42.90 | $66.00 | $6.60–$92.08 | 35% | Mar 31, 2026 source file |
| St Mary Medical Center Langhorne, PA · (215) 750-2003 HC Quest Magnesium RBC | $42.90 | $66.00 | $6.60–$92.08 | 35% | Mar 31, 2026 source file |
| St Mary Medical Center Langhorne, PA · (215) 750-2003 HC Magnesium | $42.90 | $66.00 | $6.60–$92.08 | 35% | Mar 31, 2026 source file |
| Mercy Fitzgerald Hospital Darby, PA · (215) 237-4000 HC Magnesium Urine | $53.30 | $82.00 | $6.68–$106.36 | 35% | Mar 31, 2026 source file |
| Mercy Fitzgerald Hospital Darby, PA · (215) 237-4000 HC Warde Magnesium RBC | $53.30 | $82.00 | $6.68–$106.36 | 35% | Mar 31, 2026 source file |
| Mercy Fitzgerald Hospital Darby, PA · (215) 237-4000 HC Warde 3426900 Magnesium 24 Hour Urine | $53.30 | $82.00 | $6.68–$106.36 | 35% | Mar 31, 2026 source file |
| Mercy Fitzgerald Hospital Darby, PA · (215) 237-4000 HC Magnesium | $53.30 | $82.00 | $6.68–$106.36 | 35% | Mar 31, 2026 source file |
| Nazareth Hospital Philadelphia, PA · (215) 335-6000 HC Quest Magnesium 24 Hour Urine | $65.65 | $101.00 | $6.70–$473.55 | 35% | Mar 31, 2026 source file |
| Nazareth Hospital Philadelphia, PA · (215) 335-6000 HC Warde Magnesium RBC | $65.65 | $101.00 | $6.70–$473.55 | 35% | Mar 31, 2026 source file |
| Nazareth Hospital Philadelphia, PA · (215) 335-6000 HC Magnesium Urine | $65.65 | $101.00 | $6.70–$473.55 | 35% | Mar 31, 2026 source file |
| Nazareth Hospital Philadelphia, PA · (215) 335-6000 HC Warde 3400288 Magnesium Urine | $65.65 | $101.00 | $6.70–$473.55 | 35% | Mar 31, 2026 source file |
| Nazareth Hospital Philadelphia, PA · (215) 335-6000 HC Magnesium | $65.65 | $101.00 | $6.70–$473.55 | 35% | Mar 31, 2026 source file |
| Nazareth Hospital Philadelphia, PA · (215) 335-6000 HC Quest 442 Magnesium 24 Hour Urine | $65.65 | $101.00 | $6.70–$473.55 | 35% | Mar 31, 2026 source file |
| St. Francis Hospital Wilmington, DE · (302) 421-4100 HC Quest 15565 Magnesium 24 Hour Urine | $72.80 | $112.00 | $6.57–$112.68 | 35% | Mar 31, 2026 source file |
| St. Francis Hospital Wilmington, DE · (302) 421-4100 HC Quest 442 Magnesium 24 Hour Urine | $72.80 | $112.00 | $6.57–$112.68 | 35% | Mar 31, 2026 source file |
| St. Francis Hospital Wilmington, DE · (302) 421-4100 HC Magnesium | $76.70 | $118.00 | $6.57–$113.28 | 35% | Mar 31, 2026 source file |
| St. Francis Hospital Wilmington, DE · (302) 421-4100 HC Quest Magnesium RBC | $80.60 | $124.00 | $6.57–$119.04 | 35% | Mar 31, 2026 source file |
| St. Francis Hospital Wilmington, DE · (302) 421-4100 HC Quest 14460 Magnesium Urine | $80.60 | $124.00 | $6.57–$119.04 | 35% | Mar 31, 2026 source file |
| St. Francis Hospital Wilmington, DE · (302) 421-4100 HC Magnesium Urine | $80.60 | $124.00 | $6.57–$119.04 | 35% | Mar 31, 2026 source file |
| Nemours Children's Hospital Wilmington, DE · (302) 651-4000 Supersaturation Pediatric Profile Urine VI | $117.00 | $117.00 | — | — | — source file |
| Nemours Children's Hospital Wilmington, DE · (302) 651-4000 Supersaturation Pediatric Profile Urine VI | $117.00 | $117.00 | — | — | — source file |
| Nemours Children's Hospital Wilmington, DE · (302) 651-4000 Magnesium (24 Hour Urine) | $198.00 | $198.00 | — | — | — source file |
| Nemours Children's Hospital Wilmington, DE · (302) 651-4000 Magnesium (24 Hour Urine) | $198.00 | $198.00 | — | — | — source file |
| Nemours Children's Hospital Wilmington, DE · (302) 651-4000 Magnesium | $246.00 | $246.00 | — | — | — source file |
| Nemours Children's Hospital Wilmington, DE · (302) 651-4000 Magnesium | $246.00 | $246.00 | — | — | — source file |
Inpatient: lowest $22.70, median $34.00, highest $72.80 — a 3.2× difference within the same market.
As an outpatient, the same code is billed by 22 facilities here, median $34.00 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 4 of 4 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.