Ammonia test cost in New York, NY
In New York-Newark-Jersey City, NY-NJ, 69 hospitals list a cash price for ammonia blood test: from $14.00 to $660.00, with a median of $17.48. The lowest listed price is at Saint Marys Hospital — $3.48 less than the median here. Across New York, the median is $52.74 at 109 hospitals.
Cash prices at 69 facilities across 48 cities for code 82140, as an outpatient — the setting a self-pay patient normally buys. Collected Oct 4, 2026; the hospital files themselves were last updated between Apr 22, 2025 and Sep 23, 2026.
Lowest$14.00Saint Marys Hospital
Median$17.48half of hospitals charge less
Highest$660.00in this market
Difference47.1×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 $14.00Highest $660.00
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Saint Marys Hospital lowest Passaic, NJ · (973) 365-4300 Hc Assay Of Ammonia File of Sep 1, 2026 · source file | $14.00 | $116.00 | $8.74–$98.60 | 88% |
| Old Bridge Medical Center Old Bridge, NJ AMMONIA PLASMA QST+3 more lines at this price File of Dec 31, 2025 · source file | $14.57 | $183.00 | $24.34–$178.04 | 92% |
| Southern Ocean Medical Center Manahawkin, NJ · (609) 597-6011 AMMONIA.+3 more lines at this price File of Dec 31, 2025 · source file | $14.57 | $183.00 | $14.57–$180.00 | 92% |
| Bayshore Medical Center Holmdel, NJ · (732) 739-5900 AMMONIA.+3 more lines at this price File of Dec 31, 2025 · source file | $14.57 | $183.00 | $14.57–$178.10 | 92% |
| Queens Hospital Center Jamaica, NY · (718) 883-3000 HC AMMONIA File of Sep 5, 2026 · source file | $14.57 | $61.08 | $1.00–$56.31 | 76% |
| Hackensack University Medical Center Hackensack, NJ · (551) 996-2000 AMMONIA.+3 more lines at this price File of Dec 31, 2025 · source file | $14.57 | $183.00 | $45.93–$183.00 | 92% |
| Raritan Bay Medical Center Perth Amboy, NJ · (732) 324-5000 AMMONIA.+3 more lines at this price File of Dec 31, 2025 · source file | $14.57 | $183.00 | $24.34–$178.04 | 92% |
| Kings County Hospital Center Brooklyn, NY · (718) 245-3901 HC AMMONIA File of Sep 5, 2026 · source file | $14.57 | $61.08 | $1.00–$55.95 | 76% |
| Harlem Hospital Center New York, NY · (212) 939-1000 HC AMMONIA File of Sep 5, 2026 · source file | $14.57 | $61.08 | $14.28–$100.73 | 76% |
| Metropolitan Hospital Center New York, NY · (212) 423-6262 HC AMMONIA File of Sep 5, 2026 · source file | $14.57 | $61.08 | $14.28–$63.56 | 76% |
| Ocean Medical Center Brick, NJ · (732) 840-2200 ASSAY OF AMMONIA+7 more lines at this price File of Dec 31, 2025 · source file | $14.57 | $183.00 | $25.99–$178.10 | 92% |
| Jacobi Medical Center Bronx, NY · (718) 918-5000 HC AMMONIA File of Sep 5, 2026 · source file | $14.57 | $61.08 | $14.28–$124.72 | 76% |
| Jersey Shore University Medical Center Neptune City, NJ · (732) 775-5500 ASSAY OF AMMONIA+3 more lines at this price File of Dec 31, 2025 · source file | $14.57 | $183.00 | $30.38–$183.00 | 92% |
| Elmhurst Hospital Center Broadway Elmhurst, NY · (718) 334-1141 HC AMMONIA File of Sep 5, 2026 · source file | $14.57 | $61.08 | $14.28–$67.70 | 76% |
| South Brooklyn Health Brooklyn, NY · (718) 616-4834 HC AMMONIA File of Sep 5, 2026 · source file | $14.57 | $61.08 | $1.00–$55.95 | 76% |
| Woodhull Medical & Mental Health Center Brooklyn, NY · (718) 963-8100 HC AMMONIA File of Sep 5, 2026 · source file | $14.57 | $61.08 | $14.28–$62.96 | 76% |
| North Central Bronx Hospital Bronx, NY HC AMMONIA File of Sep 5, 2026 · source file | $14.57 | $61.08 | $14.28–$61.38 | 76% |
| JFK University Medical Center Edison, NJ · (732) 321-7000 ASSAY OF AMMONIA+7 more lines at this price File of Dec 31, 2025 · source file | $14.57 | $183.00 | $29.46–$173.12 | 92% |
| St Joseph's Hospital, Yonkers Yonkers, NY · (914) 378-7000 Assay of ammonia+2 more lines at this price File of Jul 13, 2026 · source file | $14.57 | — | $12.66–$292.28 | — |
| Bellevue Hospital Center New York, NY · (212) 561-4132 HC AMMONIA File of Sep 5, 2026 · source file | $14.57 | $61.08 | $1.00–$56.13 | 76% |
| Lincoln Medical & Mental Health Center Bronx, NY · (718) 579-5000 HC AMMONIA File of Sep 5, 2026 · source file | $14.57 | $61.08 | $1.00–$56.13 | 76% |
| Palisades Medical Center North Bergen, NJ · (201) 854-5000 AMMONIA.+3 more lines at this price File of Dec 31, 2025 · source file | $14.57 | $183.00 | $9.84–$66.76 | 92% |
| Riverview Medical Center Red Bank, NJ · (732) 741-2700 ASSAY OF AMMONIA+3 more lines at this price File of Dec 31, 2025 · source file | $14.57 | $183.00 | $25.80–$179.25 | 92% |
| Chilton Medical Center Pompton Plains, NJ · (973) 831-5000 Ammonia File of Apr 1, 2026 · source file | $16.76 | $252.00 | — | 93% |
| CentraState Medical Center Freehold Township, NJ · (732) 294-7012 Ammonia File of Apr 1, 2026 · source file | $16.76 | $215.00 | — | 92% |
| Newton Medical Center Newton, NJ · (973) 383-2121 Ammonia File of Apr 1, 2026 · source file | $16.76 | $587.00 | — | 97% |
| Overlook Medical Center Summit, NJ · (908) 522-2000 Ammonia File of Apr 1, 2026 · source file | $16.76 | $207.00 | — | 92% |
| University Hospital Newark, NJ · (973) 972-4300 ASSAY OF AMMONIA File of Aug 13, 2026 · source file | $16.76 | $361.02 | $11.66–$342.97 | 95% |
| Hackensack Meridian Mountainside Medical Center Montclair, NJ · (973) 429-6000 Ammonia level File of Feb 12, 2026 · source file | $16.76 | $240.45 | $14.57–$240.45 | 93% |
| Morristown Medical Center Morristown, NJ · (973) 971-5450 Ammonia File of Apr 1, 2026 · source file | $16.76 | $280.00 | — | 94% |
| NYU Langone – Orthopedic Hospital New York, NY HC ASSAY OF AMMONIA File of Jan 1, 2026 · source file | $17.48 | $106.50 | $13.11–$169.69 | 84% |
| NYU Langone Hospital - Suffolk Patchogue, NY · (631) 654-7100 HC ASSAY OF AMMONIA File of Jan 1, 2026 · source file | $17.48 | $106.50 | $13.11–$169.69 | 84% |
| NYU Langone Mineola, NY HC ASSAY OF AMMONIA File of Jan 1, 2026 · source file | $17.48 | $106.50 | $13.11–$169.69 | 84% |
| NYU Langone Brooklyn, NY HC ASSAY OF AMMONIA File of Jan 1, 2026 · source file | $17.48 | $106.50 | $13.11–$169.69 | 84% |
| NYU Langone – Tisch Hospital New York, NY · (212) 263-7300 HC ASSAY OF AMMONIA File of Jan 1, 2026 · source file | $17.48 | $106.50 | $13.11–$169.69 | 84% |
| Englewood Health Englewood, NJ · (201) 894-3000 Amnonia 82140 File of Feb 2, 2026 · source file | $18.90 | $189.00 | $14.78–$151.20 | 90% |
| The Valley Hospital Paramus, NJ · (201) 447-8000 ASSAY OF AMMONIA 6075134 File of May 6, 2026 · source file | $21.00 | $35.00 | $11.66–$46.48 | 40% |
| BronxCare Hospital Center - Fulton Campus Bronx, NY · (212) 588-7000 AMMONIA File of May 5, 2026 · source file | $32.05 | $32.05 | — | — |
| Bronx-Lebanon Hospital Center - Concourse Division Bronx, NY · (212) 588-7000 AMMONIA File of Apr 17, 2026 · source file | $32.05 | $32.05 | — | — |
| The Valley Hospital Paramus, NJ · (201) 447-8000 AMMONIA File of May 6, 2026 · source file | $35.40 | $59.00 | $11.66–$50.15 | 40% |
| Jamaica Hospital Medical Center Jamaica, NY · (718) 262-6000 AMMONIA LEVEL File of Mar 25, 2026 · source file | $44.00 | $44.00 | $12.38–$1,912.00 | — |
| Flushing Hospital Medical Center Flushing, NY · (718) 670-5000 AMMONIA LEVEL File of Mar 25, 2026 · source file | $44.00 | $44.00 | $12.38–$1,912.00 | — |
| University Hospital of Brooklyn Brooklyn, NY · (718) 270-1000 82140 - ASSAY OF AMMONIA File of Apr 22, 2025 · source file | $48.00 | $48.00 | $11.00–$92.00 | — |
| St. Francis Hospital Roslyn, NY HC AMMONIA BLOOD File of Feb 19, 2026 · source file | $53.79 | $151.00 | $14.28–$151.00 | 64% |
| Chsli St Joseph Hospital Bethpage, NY · (516) 759-6000 HC AMMONIA BLOOD File of Feb 19, 2026 · source file | $53.79 | $151.00 | $14.28–$151.00 | 64% |
| Mercy Medical Center Rockville Centre, NY · (516) 705-2525 HC AMMONIA BLOOD File of Feb 19, 2026 · source file | $53.79 | $153.00 | $14.28–$153.00 | 65% |
| Good Samaritan Hospital Medical Center West Islip, NY · (631) 376-3000 HC AMMONIA BLOOD File of Feb 19, 2026 · source file | $53.79 | $151.00 | $14.28–$151.00 | 64% |
| St. Catherine of Siena Medical Center Smithtown, NY · (631) 862-3000 HC AMMONIA BLOOD File of Feb 19, 2026 · source file | $53.79 | $153.00 | $10.39–$153.00 | 65% |
| Nassau University Medical Center East Meadow, NY · (516) 572-0123 Chem Se Amonia File of Oct 28, 2025 · source file | $58.50 | $83.57 | $5.97–$625.00 | 30% |
| CentraState Medical Center Freehold Township, NJ · (732) 294-7012 Ammonia File of Apr 1, 2026 · source file | $60.16 | $527.00 | — | 89% |
| Newton Medical Center Newton, NJ · (973) 383-2121 Ammonia File of Apr 1, 2026 · source file | $65.82 | $2,219.00 | — | 97% |
| Mount Sinai Queens Long Island, NY HC Ammonia File of Apr 1, 2026 · source file | $72.00 | $80.00 | — | 10% |
| Mount Sinai Brooklyn Brooklyn, NY HC Ammonia File of Apr 1, 2026 · source file | $72.00 | $80.00 | — | 10% |
| Mount Sinai Morningside New York, NY HC Ammonia File of Apr 1, 2026 · source file | $72.00 | $80.00 | — | 10% |
| The Mount Sinai Hospital New York, NY · (212) 241-7981 HC Ammonia File of Apr 1, 2026 · source file | $72.00 | $80.00 | — | 10% |
| Maimonides Medical Center Brooklyn, NY · (718) 283-6000 AMMONIA File of Apr 1, 2026 · source file | $75.00 | $75.00 | — | — |
| Morristown Medical Center Morristown, NJ · (973) 971-5450 Ammonia File of Apr 1, 2026 · source file | $88.22 | $1,593.00 | — | 94% |
| Hudson Regional Hospital Secaucus, NJ · (201) 392-3200 Ammonia level File of Sep 23, 2026 · source file | $100.15 | $100.15 | $14.57–$188.98 | — |
| St Johns Episcopal Hospital Far Rockaway, NY · (718) 869-7000 ASSAY OF AMMONIA File of Apr 7, 2026 · source file | $109.07 | $109.07 | $13.84–$33.59 | — |
| Montefiore Mount Vernon Hospital Mount Vernon, NY · (914) 664-8000 HC ASSAY OF AMMONIA File of Apr 1, 2026 · source file | $120.90 | $186.00 | $10.93–$157.79 | 35% |
| Englewood Health Englewood, NJ · (201) 894-3000 Stonerisk Diagnostic Profile *X* 82140 File of Feb 2, 2026 · source file | $127.40 | $1,274.00 | $99.63–$1,019.20 | 90% |
| Overlook Medical Center Summit, NJ · (908) 522-2000 Ammonia File of Apr 1, 2026 · source file | $128.67 | $2,135.00 | — | 94% |
| Chilton Medical Center Pompton Plains, NJ · (973) 831-5000 Ammonia File of Apr 1, 2026 · source file | $131.49 | $2,287.00 | — | 94% |
| Westchester Medical Center Valhalla, NY · (914) 493-7000 ASSAY OF AMMONIA File of Jul 28, 2026 · source file | $175.00 | $175.00 | $10.20–$175.00 | — |
| Stony Brook University Hospital Stony Brook, NY · (631) 444-4000 AMMONIA LEVEL File of Jun 10, 2026 · source file | $179.00 | $179.00 | $14.57–$4,255.00 | — |
| Stony Brook University Hospital Stony Brook, NY · (631) 444-4000 ASSAY OF AMMONIA File of Jun 10, 2026 · source file | $192.00 | $192.00 | $14.57–$4,255.00 | — |
| New York Community Hospital of Brooklyn Brooklyn, NY · (718) 692-5302 AMMONIA File of Apr 1, 2026 · source file | $228.02 | $228.02 | — | — |
| Good Samaritan Hospital Suffern, NY · (914) 368-5000 Ammonia Level File of Jun 29, 2026 · source file | $233.00 | $233.00 | $14.57–$687.56 | — |
| Memorial Hospital for Cancer and Allied Diseases West Harrison, NY HC Assay of Ammonia - Ammonia File of Dec 1, 2025 · source file | $253.00 | $253.00 | $14.59–$227.70 | — |
| Memorial Hospital for Cancer and Allied Diseases New York, NY HC Assay of Ammonia - Ammonia File of Dec 1, 2025 · source file | $253.00 | $253.00 | $14.59–$227.70 | — |
| Memorial Hospital for Cancer and Allied Diseases Middletown, NJ HC Assay of Ammonia - Ammonia File of Dec 1, 2025 · source file | $253.00 | $253.00 | $45.88–$227.70 | — |
| Memorial Hospital for Cancer and Allied Diseases Basking Ridge, NJ HC Assay of Ammonia - Ammonia File of Dec 1, 2025 · source file | $253.00 | $253.00 | $45.88–$227.70 | — |
| St Johns Riverside Hospital Park Care Pavillion Yonkers, NY · (914) 964-4444 ASSAY OF AMMONIA File of Mar 27, 2026 · source file | $271.15 | $319.00 | $13.84–$3,783.00 | 15% |
| New York Eye and Ear Infirmary of Mount Sinai New York, NY · (212) 979-4000 AMMONIA, BLOOD File of Apr 1, 2026 · source file | $273.24 | $303.60 | — | 10% |
| Stony Brook Southampton Hospital Southampton, NY AMMONIA LEVEL File of Jun 17, 2026 · source file | $279.15 | $279.15 | $14.57–$18.94 | — |
| Brooklyn Hospital Center at Downtown Campus Brooklyn, NY · (718) 250-8000 AMMONIA LEVEL File of Jul 27, 2026 · source file | $289.65 | $289.65 | $11.66–$29.14 | — |
| Stony Brook Southampton Hospital Southampton, NY ASSAY OF AMMONIA File of Jun 17, 2026 · source file | $298.69 | $298.69 | $14.57–$18.94 | — |
| Brooklyn Hospital Center at Downtown Campus Brooklyn, NY · (718) 250-8000 ASSAY OF AMMONIA File of Jul 27, 2026 · source file | $331.63 | $331.63 | $11.66–$29.14 | — |
| Saint Peters University Hospital New Brunswick, NJ · (732) 745-8600 AMMONIA LEVEL File of Nov 19, 2025 · source file | $660.00 | $666.00 | $6.00–$666.00 | 1% |
Hospital The hospital that published the price, its city and the line exactly as written in its price file.
Cash price The hospital's own price for a patient paying without insurance (“discounted cash” in its price file). Hospitals must publish it under federal law, 45 CFR 180.50. Call to confirm it before booking. More
List price The hospital's full chargemaster price (“gross charge”) before any discount. Almost nobody pays it; the gap to the cash price shows what the self-pay discount is worth. More
Insurers pay The lowest and highest rates this hospital has agreed with insurance plans for the same item, from its price file. If the cash price is below what your plan pays and you have not met your deductible, paying cash can cost you less. More
Off list How much lower the cash price is than the list price.
No cash discount This line's cash price equals the hospital's full list price. Many hospitals still reduce bills for uninsured patients: ask the billing office for its self-pay discount in writing. More
Outpatient: lowest $14.00, median $17.48, highest $660.00 — a 47.1× difference within the same market.
As an inpatient, the same code is billed by 30 facilities here, median $26.53. 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 47 of 55 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 9 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
An ammonia test measures ammonia in the blood. It is used for confusion or drowsiness in people with liver disease and for some rare inherited disorders in newborns.
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 82140 ($89.76). 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, NYAMMONIA | $0.01 | file |
| Kingsbrook Jewish Medical Center Brooklyn, NYAMMONIA | $0.01 | file |
| Interfaith Medical Center Brooklyn, NYAMMONIA | $0.01 | file |
File Link to the hospital's own price file.