Phosphorus test cost in New York, NY — inpatient
In New York-Newark-Jersey City, NY-NJ, 32 hospitals list a cash price for phosphorus (phosphate) blood test as an inpatient: from $4.74 to $273.24, with a median of $13.72. The lowest listed price is at Jersey Shore University Medical Center — $8.98 less than the median here. Across New York, the median is $20.34 at 112 hospitals.
Cash prices at 32 facilities across 22 cities for code 84100, as an inpatient (admitted to hospital) . Collected Oct 1, 2026; the hospital files themselves were last updated between Oct 28, 2025 and Aug 13, 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 New York-Newark-Jersey City, NY-NJ.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Jersey Shore University Medical Center lowest Neptune City, NJ · (732) 775-5500 PHOSPHORUS INORGANIC PLASMA OR SERUM ARUP+3 more lines at this price File of Dec 31, 2025 · source file | $4.74 | $79.00 | $13.11–$80.00 | 94% |
| University Hospital Newark, NJ · (973) 972-4300 ASSAY OF PHOSPHORUS INORGANIC File of Aug 13, 2026 · source file | $5.45 | $88.43 | $0.98–$84.01 | 94% |
| Morristown Medical Center Morristown, NJ · (973) 971-5450 Phosphorus Inorganic source file | $5.45 | $92.00 | — | 94% |
| Overlook Medical Center Summit, NJ · (908) 522-2000 Phosphorus Inorganic source file | $5.45 | $87.00 | — | 94% |
| Chilton Medical Center Pompton Plains, NJ · (973) 831-5000 Phosphorus Inorganic Stool+1 more line at this price source file | $5.45 | $97.00 | — | 94% |
| Hackensack Meridian Mountainside Medical Center Montclair, NJ · (973) 429-6000 Phosphate level source file | $5.45 | $80.00 | $4.74–$80.00 | 93% |
| CentraState Medical Center Freehold Township, NJ · (732) 294-7012 Phosphorus Inorganic source file | $5.45 | $60.00 | — | 91% |
| Newton Medical Center Newton, NJ · (973) 383-2121 Phosphorus Inorganic source file | $5.45 | $222.00 | — | 98% |
| NYU Langone Hospital - Suffolk Patchogue, NY · (631) 654-7100 HC ASSAY OF PHOSPHORUS File of Jan 1, 2026 · source file | $5.69 | $42.48 | $4.27–$160.44 | 87% |
| NYU Langone Mineola, NY HC ASSAY OF PHOSPHORUS File of Jan 1, 2026 · source file | $5.69 | $42.48 | $4.27–$160.44 | 87% |
| NYU Langone Brooklyn, NY HC ASSAY OF PHOSPHORUS File of Jan 1, 2026 · source file | $5.69 | $42.48 | $4.27–$160.44 | 87% |
| NYU Langone – Tisch Hospital New York, NY · (212) 263-7300 HC ASSAY OF PHOSPHORUS File of Jan 1, 2026 · source file | $5.69 | $42.48 | $4.27–$160.44 | 87% |
| NYU Langone – Orthopedic Hospital New York, NY HC ASSAY OF PHOSPHORUS File of Jan 1, 2026 · source file | $5.69 | $42.48 | $4.27–$160.44 | 87% |
| Englewood Health Englewood, NJ · (201) 894-3000 Phosphorus 84100 File of Feb 2, 2026 · source file | $6.50 | $65.00 | $5.08–$52.00 | 90% |
| BronxCare Hospital Center - Fulton Campus Bronx, NY · (212) 588-7000 INORGANIC PHOSPHORUS source file | $10.43 | $10.43 | — | — |
| Bronx-Lebanon Hospital Center - Concourse Division Bronx, NY · (212) 588-7000 INORGANIC PHOSPHORUS source file | $10.43 | $10.43 | — | — |
| University Hospital of Brooklyn Brooklyn, NY · (718) 270-1000 84100 - ASSAY OF PHOSPHORUS source file | $17.00 | $17.00 | $2.00–$77.00 | — |
| Hunterdon Medical Center Flemington, NJ · (908) 788-6100 PHOSPHORUS SERUM source file | $17.53 | $56.00 | $44.80–$47.60 | 69% |
| Nassau University Medical Center East Meadow, NY · (516) 572-0123 Chem Se Inorg Phos-S File of Oct 28, 2025 · source file | $19.06 | $27.22 | — | 30% |
| Hunterdon Medical Center Flemington, NJ · (908) 788-6100 PHOSPHORUS, FECES source file | $21.60 | $69.00 | $55.20–$58.65 | 69% |
| The Valley Hospital Paramus, NJ · (201) 447-8000 Phosphorus+1 more line at this price source file | $22.20 | $37.00 | $3.79–$31.45 | 40% |
| Maimonides Medical Center Brooklyn, NY · (718) 283-6000 PHOSPHORUS INORGANIC File of Apr 1, 2026 · source file | $24.00 | $24.00 | — | — |
| Maimonides Medical Center Brooklyn, NY · (718) 283-6000 FLUID PHOSPHORUS+1 more line at this price File of Apr 1, 2026 · source file | $25.00 | $25.00 | — | — |
| HMH Carrier Behavioral Health Belle Mead, NJ PHOSPHATE AS PHOSPHORUS QST+1 more line at this price source file | $32.00 | $80.00 | — | 60% |
| The Valley Hospital Paramus, NJ · (201) 447-8000 PHOSPHORUS, FECES 6070937 source file | $38.40 | $64.00 | $3.79–$54.40 | 40% |
| Mount Sinai Queens Long Island, NY HC Phosphate+1 more line at this price File of Apr 1, 2026 · source file | $49.50 | $55.00 | — | 10% |
| The Mount Sinai Hospital New York, NY · (212) 241-7981 HC Assay of Phosphorus+1 more line at this price File of Apr 1, 2026 · source file | $49.50 | $55.00 | — | 10% |
| Mount Sinai Behavioral Health Center New York, NY HC Phosphate+1 more line at this price File of Apr 1, 2026 · source file | $49.50 | $55.00 | — | 10% |
| Mount Sinai Brooklyn Brooklyn, NY HC Assay of Phosphorus+1 more line at this price File of Apr 1, 2026 · source file | $49.50 | $55.00 | — | 10% |
| Mount Sinai Morningside New York, NY HC Phosphate+1 more line at this price File of Apr 1, 2026 · source file | $49.50 | $55.00 | — | 10% |
| Mount Sinai Morningside New York, NY HC Peri. Fluid Phosphorus File of Apr 1, 2026 · source file | $54.00 | $60.00 | — | 10% |
| Mount Sinai Queens Long Island, NY HC Peri. Fluid Phosphorus File of Apr 1, 2026 · source file | $54.00 | $60.00 | — | 10% |
| The Mount Sinai Hospital New York, NY · (212) 241-7981 HC Peri. Fluid Phosphorus File of Apr 1, 2026 · source file | $54.00 | $60.00 | — | 10% |
| Mount Sinai Behavioral Health Center New York, NY HC Peri. Fluid Phosphorus File of Apr 1, 2026 · source file | $54.00 | $60.00 | — | 10% |
| Mount Sinai Brooklyn Brooklyn, NY HC Peri. Fluid Phosphorus File of Apr 1, 2026 · source file | $54.00 | $60.00 | — | 10% |
| Westchester Medical Center Valhalla, NY · (914) 493-7000 ASSAY OF PHOSPHORUS File of Jul 28, 2026 · source file | $58.00 | $58.00 | $17.40–$58.00 | — |
| Good Samaritan Hospital Suffern, NY · (914) 368-5000 Phosphorus Level+1 more line at this price File of Jun 29, 2026 · source file | $76.00 | $76.00 | $22.80–$53.20 | — |
| New York Community Hospital of Brooklyn Brooklyn, NY · (718) 692-5302 PHOSPHOROUS,INORG. File of Apr 1, 2026 · source file | $82.70 | $82.70 | — | — |
| Saint Peters University Hospital New Brunswick, NJ · (732) 745-8600 PHOSPHOROUS SERUM source file | $226.00 | $229.00 | $3.00–$229.00 | 1% |
| New York Eye and Ear Infirmary of Mount Sinai New York, NY · (212) 979-4000 BLOOD-PHOSPHORUS File of Apr 1, 2026 · source file | $273.24 | $303.60 | — | 10% |
Inpatient: lowest $4.74, median $13.72, highest $273.24 — a 57.6× difference within the same market.
As an outpatient, the same code is billed by 71 facilities here, median $10.43 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 13 of 15 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 2 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 phosphorus test measures phosphate in the blood. It is used with calcium for kidney disease, bone disease and parathyroid problems.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.
3 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 84100 ($41.60). Such a line is almost always a physician's fee billed separately, an assistant's share or a placeholder — a real charge, but not the price of the procedure itself.
| Hospital | Cash price | File |
|---|---|---|
| Brookdale Hospital Medical Center Brooklyn, NYPHOSPHORUS-SERUM | $0.01 | file |
| Kingsbrook Jewish Medical Center Brooklyn, NYPHOSPHORUS-SERUM | $0.01 | file |
| Interfaith Medical Center Brooklyn, NYPHOSPHORUS-SERUM | $0.01 | file |