Free T4 test cost in New York, NY
In New York-Newark-Jersey City, NY-NJ, 82 hospitals list a cash price for free T4 (free thyroxine) thyroid blood test: from $9.00 to $375.21, with a median of $10.60. The lowest listed price is at Saint Marys Hospital — $1.60 less than the median here. Across New York, the median is $48.00 at 111 hospitals.
- The median here, $10.60, is 84% below the US median of $66.46.
- That is 1.2× Medicare's 2026 national rate for the same service ($9.02).
- New York, NY has the lowest median of 2 metro areas in New York with at least 10 hospitals pricing this code.
- 17 of 82 hospitals list a cash price equal to their full list price, with no self-pay discount.
Cash prices at 82 facilities across 58 cities for code 84439, as an outpatient — the setting a self-pay patient normally buys. Collected Nov 12, 2026; the hospital files themselves were last updated between Apr 22, 2025 and Sep 28, 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 |
|---|---|---|---|---|
| Saint Marys Hospital lowest Passaic, NJ · (973) 365-4300 Hc Assay Of Free Thyroxine File of Sep 1, 2026 · source file | $9.00 | $172.00 | $5.41–$146.20 | 95% |
| Palisades Medical Center North Bergen, NJ · (201) 854-5000 THYROXINE-FREE.+6 more lines at this price File of Dec 31, 2025 · source file | $9.02 | $162.00 | $9.02–$41.33 | 94% |
| Southern Ocean Medical Center Manahawkin, NJ · (609) 597-6011 THYROXINE-FREE.+6 more lines at this price File of Dec 31, 2025 · source file | $9.02 | $162.00 | $10.18–$159.34 | 94% |
| Old Bridge Medical Center Old Bridge, NJ THYROXINE-FREE.+6 more lines at this price File of Dec 31, 2025 · source file | $9.02 | $162.00 | $7.32–$157.61 | 94% |
| Raritan Bay Medical Center Perth Amboy, NJ · (732) 324-5000 THYROXINE-FREE.+6 more lines at this price File of Dec 31, 2025 · source file | $9.02 | $162.00 | $7.32–$157.61 | 94% |
| Ocean Medical Center Brick, NJ · (732) 840-2200 THYROXINE-FREE.+13 more lines at this price File of Dec 31, 2025 · source file | $9.02 | $162.00 | $7.81–$157.66 | 94% |
| Riverview Medical Center Red Bank, NJ · (732) 741-2700 T4 FREE+6 more lines at this price File of Dec 31, 2025 · source file | $9.02 | $55.00 | $7.76–$158.68 | 84% |
| JFK University Medical Center Edison, NJ · (732) 321-7000 THYROXINE-FREE.+13 more lines at this price File of Dec 31, 2025 · source file | $9.02 | $162.00 | $8.86–$153.25 | 94% |
| Metropolitan Hospital Center New York, NY · (212) 423-6262 HC THYROXINE; FREE+1 more line at this price File of Sep 5, 2026 · source file | $9.02 | $37.80 | $1.00–$34.61 | 76% |
| Harlem Hospital Center New York, NY · (212) 939-1000 HC THYROXINE; FREE+1 more line at this price File of Sep 5, 2026 · source file | $9.02 | $37.80 | $1.00–$34.61 | 76% |
| Woodhull Medical & Mental Health Center Brooklyn, NY · (718) 963-8100 HC THYROXINE; FREE+1 more line at this price File of Sep 5, 2026 · source file | $9.02 | $37.80 | $1.00–$34.61 | 76% |
| Jersey Shore University Medical Center Neptune City, NJ · (732) 775-5500 T4 FREE DIRECT DIALYSIS QST+6 more lines at this price File of Dec 31, 2025 · source file | $9.02 | $162.00 | $9.13–$162.00 | 94% |
| St Joseph's Hospital, Yonkers Yonkers, NY · (914) 378-7000 Assay of free thyroxine+2 more lines at this price File of Jul 13, 2026 · source file | $9.02 | — | $7.83–$335.14 | — |
| Jacobi Medical Center Bronx, NY · (718) 918-5000 HC THYROXINE; FREE+1 more line at this price File of Sep 5, 2026 · source file | $9.02 | $37.80 | $1.00–$34.28 | 76% |
| Hackensack University Medical Center Hackensack, NJ · (551) 996-2000 THYROXINE-FREE.+6 more lines at this price File of Dec 31, 2025 · source file | $9.02 | $162.00 | $13.81–$162.00 | 94% |
| Kings County Hospital Center Brooklyn, NY · (718) 245-3901 HC THYROXINE; FREE+1 more line at this price File of Sep 5, 2026 · source file | $9.02 | $37.80 | $1.00–$34.61 | 76% |
| Bayshore Medical Center Holmdel, NJ · (732) 739-5900 T4 FREE DIRECT DIALYSIS QST+6 more lines at this price File of Dec 31, 2025 · source file | $9.02 | $162.00 | $9.02–$157.66 | 94% |
| Elmhurst Hospital Center Broadway Elmhurst, NY · (718) 334-1141 HC THYROXINE; FREE+1 more line at this price File of Sep 5, 2026 · source file | $9.02 | $37.80 | $1.00–$34.39 | 76% |
| North Central Bronx Hospital Bronx, NY HC THYROXINE; FREE+1 more line at this price File of Sep 5, 2026 · source file | $9.02 | $37.80 | $1.00–$34.28 | 76% |
| Lincoln Medical & Mental Health Center Bronx, NY · (718) 579-5000 HC THYROXINE; FREE+1 more line at this price File of Sep 5, 2026 · source file | $9.02 | $37.80 | $1.00–$34.73 | 76% |
| South Brooklyn Health Brooklyn, NY · (718) 616-4834 HC THYROXINE; FREE+1 more line at this price File of Sep 5, 2026 · source file | $9.02 | $37.80 | $1.00–$34.61 | 76% |
| Bellevue Hospital Center New York, NY · (212) 561-4132 HC THYROXINE; FREE+1 more line at this price File of Sep 5, 2026 · source file | $9.02 | $37.80 | $1.00–$34.73 | 76% |
| Queens Hospital Center Jamaica, NY · (718) 883-3000 HC THYROXINE; FREE+1 more line at this price File of Sep 5, 2026 · source file | $9.02 | $37.80 | $8.84–$144.74 | 76% |
| Jersey City Medical Center Jersey City, NJ · (201) 915-2000 HC Assay of Free Thyroxine - T4 Free File of Mar 4, 2026 · source file | $9.92 | $154.00 | $4.24–$139.78 | 94% |
| Clara Maass Medical Center Belleville, NJ · (973) 450-2000 HC Assay of Free Thyroxine - T4 Free File of Mar 4, 2026 · source file | $9.92 | $179.00 | $4.24–$170.87 | 94% |
| Cooperman Barnabas Medical Center Livingston, NJ · (973) 322-5000 HC Assay of Free Thyroxine - T4 Free File of Mar 4, 2026 · source file | $9.92 | $138.00 | $4.24–$117.30 | 93% |
| Trinitas Regional Medical Center Elizabeth, NJ · (908) 994-5000 HC Assay of Free Thyroxine - T4 Free File of Mar 4, 2026 · source file | $9.92 | $154.00 | $4.24–$98.20 | 94% |
| Newark Beth Israel Medical Center Newark, NJ · (973) 926-7000 HC Assay of Free Thyroxine - T4 Free File of Mar 4, 2026 · source file | $9.92 | $138.00 | $4.24–$128.79 | 93% |
| Robert Wood Johnson University Hospital Somerset Somerville, NJ · (908) 685-2200 HC Assay of Free Thyroxine - T4 Free File of Mar 4, 2026 · source file | $9.92 | $179.00 | $4.24–$163.74 | 94% |
| Robert Wood Johnson University Hospital Rahway Rahway, NJ · (732) 381-4200 HC Assay of Free Thyroxine - T4 Free File of Mar 4, 2026 · source file | $9.92 | $179.00 | $4.24–$120.28 | 94% |
| Community Medical Center Toms River, NJ · (732) 557-8000 HC Assay of Free Thyroxine - T4 Free File of Mar 4, 2026 · source file | $9.92 | $154.00 | $4.24–$140.89 | 94% |
| Monmouth Medical Center Southern Campus Lakewood, NJ · (732) 363-1900 HC Assay of Free Thyroxine - T4 Free File of Mar 3, 2026 · source file | $9.92 | $154.00 | $4.24–$149.54 | 94% |
| Monmouth Medical Center Long Branch, NJ · (732) 222-5200 HC Assay of Free Thyroxine - T4 Free File of Mar 4, 2026 · source file | $9.92 | $154.00 | $4.24–$148.93 | 94% |
| Robert Wood Johnson University Hospital New Brunswick New Brunswick, NJ · (732) 828-3000 HC Assay of Free Thyroxine - T4 Free File of Mar 4, 2026 · source file | $9.92 | $138.00 | $4.24–$114.81 | 93% |
| Chilton Medical Center Pompton Plains, NJ · (973) 831-5000 Thyroxine Free File of Apr 1, 2026 · source file | $10.37 | $63.00 | — | 84% |
| Morristown Medical Center Morristown, NJ · (973) 971-5450 Thyroxine Free File of Apr 1, 2026 · source file | $10.37 | $63.00 | — | 84% |
| University Hospital Newark, NJ · (973) 972-4300 ASSAY OF FREE THYROXINE File of Aug 13, 2026 · source file | $10.37 | $384.95 | $5.99–$365.70 | 97% |
| Newton Medical Center Newton, NJ · (973) 383-2121 Thyroxine Free File of Apr 1, 2026 · source file | $10.37 | $63.00 | — | 84% |
| CentraState Medical Center Freehold Township, NJ · (732) 294-7012 Thyroxine Free File of Apr 1, 2026 · source file | $10.37 | $190.00 | — | 95% |
| Overlook Medical Center Summit, NJ · (908) 522-2000 Thyroxine Free File of Apr 1, 2026 · source file | $10.37 | $63.00 | — | 84% |
| Hackensack Meridian Mountainside Medical Center Montclair, NJ · (973) 429-6000 Thyroxine (thyroid chemical), free File of Feb 12, 2026 · source file | $10.37 | $375.00 | $9.02–$375.00 | 97% |
| NYU Langone – Orthopedic Hospital New York, NY HC ASSAY OF FREE THYROXINE File of Jan 1, 2026 · source file | $10.82 | $148.90 | $8.12–$202.60 | 93% |
| NYU Langone Mineola, NY HC ASSAY OF FREE THYROXINE File of Jan 1, 2026 · source file | $10.82 | $148.90 | $8.12–$202.60 | 93% |
| NYU Langone Brooklyn, NY HC ASSAY OF FREE THYROXINE File of Jan 1, 2026 · source file | $10.82 | $148.90 | $8.12–$202.60 | 93% |
| NYU Langone – Tisch Hospital New York, NY · (212) 263-7300 HC ASSAY OF FREE THYROXINE File of Jan 1, 2026 · source file | $10.82 | $148.90 | $8.12–$202.60 | 93% |
| NYU Langone Hospital - Suffolk Patchogue, NY · (631) 654-7100 HC ASSAY OF FREE THYROXINE File of Jan 1, 2026 · source file | $10.82 | $148.90 | $8.12–$202.60 | 93% |
| Flushing Hospital Medical Center Flushing, NY · (718) 670-5000 ASSAY OF FREE THYROXINE File of Mar 25, 2026 · source file | $18.00 | $18.00 | $5.50–$1,912.00 | — |
| Jamaica Hospital Medical Center Jamaica, NY · (718) 262-6000 ASSAY OF FREE THYROXINE File of Mar 25, 2026 · source file | $18.00 | $18.00 | $5.50–$1,912.00 | — |
| Bronx-Lebanon Hospital Center - Concourse Division Bronx, NY · (212) 588-7000 FREE T4 THYROXINE File of Apr 17, 2026 · source file | $19.84 | $19.84 | — | — |
| BronxCare Hospital Center - Fulton Campus Bronx, NY · (212) 588-7000 FREE T4 THYROXINE File of May 5, 2026 · source file | $19.84 | $19.84 | — | — |
| Flushing Hospital Medical Center Flushing, NY · (718) 670-5000 THYROXINE (THYROID CHEMICAL); FREE File of Mar 25, 2026 · source file | $27.00 | $27.00 | $5.50–$1,912.00 | — |
| Jamaica Hospital Medical Center Jamaica, NY · (718) 262-6000 THYROXINE (THYROID CHEMICAL); FREE File of Mar 25, 2026 · source file | $27.00 | $27.00 | $5.50–$1,912.00 | — |
| St. Francis Hospital Roslyn, NY HC LAB COMBINE CPT 84439 & 84479+3 more lines at this price File of Feb 19, 2026 · source file | $33.28 | $653.00 | $8.84–$653.00 | 95% |
| Good Samaritan Hospital Medical Center West Islip, NY · (631) 376-3000 HC THYROXINE FREE DIALYSIS+3 more lines at this price File of Feb 19, 2026 · source file | $33.28 | $327.00 | $8.84–$653.00 | 90% |
| Mercy Medical Center Rockville Centre, NY · (516) 705-2525 HC THYROXINE FREE+3 more lines at this price File of Feb 19, 2026 · source file | $33.28 | $327.00 | $8.84–$653.00 | 90% |
| Chsli St Joseph Hospital Bethpage, NY · (516) 759-6000 HC LAB COMBINE CPT 84439 & 84436+3 more lines at this price File of Feb 19, 2026 · source file | $33.28 | $653.00 | $8.84–$653.00 | 95% |
| St. Catherine of Siena Medical Center Smithtown, NY · (631) 862-3000 HC LAB COMBINE CPT 84439 & 84436+3 more lines at this price File of Feb 19, 2026 · source file | $33.28 | $653.00 | $8.84–$653.00 | 95% |
| The Valley Hospital Paramus, NJ · (201) 447-8000 FRT4D File of May 6, 2026 · source file | $34.80 | $58.00 | $7.22–$49.30 | 40% |
| Saint Peters University Hospital New Brunswick, NJ · (732) 745-8600 T4 FREE DIRECT DIALYSIS (T4FDD) File of Nov 19, 2025 · source file | $37.00 | $42.00 | $5.00–$42.00 | 12% |
| Englewood Health Englewood, NJ · (201) 894-3000 Free T4 84439 File of Feb 2, 2026 · source file | $40.00 | $400.00 | $31.28–$320.00 | 90% |
| Maimonides Medical Center Brooklyn, NY · (718) 283-6000 THYROXINE FREE File of Apr 1, 2026 · source file | $48.00 | $48.00 | — | — |
| Hudson Regional Hospital Secaucus, NJ · (201) 392-3200 Thyroxine (thyroid chemical), free File of Sep 23, 2026 · source file | $62.00 | $62.00 | $9.02–$116.99 | — |
| Children's Specialized Hospital Mountainside, NJ · (732) 258-7050 HC Assay of Free Thyroxine - T4 Free File of Mar 4, 2026 · source file | $68.00 | $136.00 | $7.22–$133.28 | 50% |
| The Valley Hospital Paramus, NJ · (201) 447-8000 FREE T4 TEST File of May 6, 2026 · source file | $79.20 | $132.00 | $7.22–$112.20 | 40% |
| The Valley Hospital Paramus, NJ · (201) 447-8000 FREE T-4 File of May 6, 2026 · source file | $82.20 | $137.00 | $7.22–$116.45 | 40% |
| Montefiore Mount Vernon Hospital Mount Vernon, NY · (914) 664-8000 HC ASSAY OF FREE THYROXINE File of Sep 28, 2026 · source file | $98.80 | $152.00 | $6.75–$121.60 | 35% |
| Morristown Medical Center Morristown, NJ · (973) 971-5450 Thyroxine Free File of Apr 1, 2026 · source file | $106.52 | $1,844.00 | — | 94% |
| The Mount Sinai Hospital New York, NY · (212) 241-7981 HC Thyroxine (T4) Free File of Apr 1, 2026 · source file | $108.00 | $120.00 | — | 10% |
| Mount Sinai Morningside New York, NY HC Thyroxine (T4) Free File of Apr 1, 2026 · source file | $108.00 | $120.00 | — | 10% |
| Mount Sinai Brooklyn Brooklyn, NY · (212) 420-2000 HC Thyroxine (T4) Free File of Apr 1, 2026 · source file | $108.00 | $120.00 | — | 10% |
| Mount Sinai Queens Long Island, NY HC Thyroxine (T4) Free File of Apr 1, 2026 · source file | $108.00 | $120.00 | — | 10% |
| Nassau University Medical Center East Meadow, NY · (516) 572-0123 T4 Freedirect Dialysis+1 more line at this price File of Oct 28, 2025 · source file | $108.18 | $154.53 | $3.69–$625.00 | 30% |
| Westchester Medical Center Valhalla, NY · (914) 493-7000 ASSAY OF FREE THYROXINE File of Jul 28, 2026 · source file | $109.00 | $109.00 | $6.31–$109.00 | — |
| University Hospital of Brooklyn Brooklyn, NY · (718) 270-1000 84439 - ASSAY OF FREE THYROXINE File of Apr 22, 2025 · source file | $113.00 | $113.00 | $5.00–$287.00 | — |
| Overlook Medical Center Summit, NJ · (908) 522-2000 Thyroxine Free File of Apr 1, 2026 · source file | $133.41 | $1,895.00 | — | 93% |
| CentraState Medical Center Freehold Township, NJ · (732) 294-7012 Thyroxine Free File of Apr 1, 2026 · source file | $134.11 | $846.00 | — | 84% |
| St Johns Episcopal Hospital Far Rockaway, NY · (718) 869-7000 ASSAY OF FREE THYROXINE File of Apr 7, 2026 · source file | $141.91 | $166.95 | $8.57–$20.72 | 15% |
| Good Samaritan Hospital Suffern, NY · (914) 368-5000 Thyroxine (T4) Free Direct LC File of Jun 29, 2026 · source file | $144.00 | $144.00 | $9.02–$425.45 | — |
| Stony Brook Southampton Hospital Southampton, NY ASSAY OF FREE THYROXINE File of Jun 17, 2026 · source file | $154.65 | $154.65 | $9.02–$11.73 | — |
| Chilton Medical Center Pompton Plains, NJ · (973) 831-5000 Thyroxine Free File of Apr 1, 2026 · source file | $155.02 | $1,883.00 | — | 92% |
| Newton Medical Center Newton, NJ · (973) 383-2121 Thyroxine Free File of Apr 1, 2026 · source file | $156.08 | $2,963.00 | — | 95% |
| Montefiore Medical Center Bronx, NY · (718) 920-4321 CHG ASSAY OF FREE THYROXINE+1 more line at this price File of Sep 28, 2026 · source file | $156.31 | $239.00 | $5.69–$143.40 | 35% |
| Memorial Hospital for Cancer and Allied Diseases Middletown, NJ HC T4 (Thyroxine), Free by Dialysis, Serum File of Dec 1, 2025 · source file | $163.00 | $163.00 | $36.08–$146.70 | — |
| Memorial Hospital for Cancer and Allied Diseases Basking Ridge, NJ HC T4 (Thyroxine), Free by Dialysis, Serum File of Dec 1, 2025 · source file | $163.00 | $163.00 | $36.08–$146.70 | — |
| Memorial Hospital for Cancer and Allied Diseases New York, NY HC T4 (Thyroxine), Free by Dialysis, Serum File of Dec 1, 2025 · source file | $163.00 | $163.00 | $31.96–$146.70 | — |
| Memorial Hospital for Cancer and Allied Diseases West Harrison, NY HC T4 (Thyroxine), Free by Dialysis, Serum File of Dec 1, 2025 · source file | $163.00 | $163.00 | $31.96–$146.70 | — |
| New York Community Hospital of Brooklyn Brooklyn, NY · (718) 692-5302 FREE THYROXINE File of Apr 1, 2026 · source file | $168.65 | $168.65 | — | — |
| The Valley Hospital Paramus, NJ · (201) 447-8000 FT4 BY DIALYSIS File of May 6, 2026 · source file | $211.80 | $353.00 | $7.22–$300.05 | 40% |
| St Johns Riverside Hospital Park Care Pavillion Yonkers, NY · (914) 964-4444 ASSAY OF FREE THYROXINE File of Mar 27, 2026 · source file | $236.30 | $278.00 | $8.57–$3,783.00 | 15% |
| New York Eye and Ear Infirmary of Mount Sinai New York, NY · (212) 979-4000 THYROXINE, FREE File of Apr 1, 2026 · source file | $273.24 | $303.60 | — | 10% |
| Stony Brook University Hospital Stony Brook, NY · (631) 444-4000 THYROXINE (THYROID CHEMICAL); FREE File of Jun 10, 2026 · source file | $281.00 | $281.00 | $9.02–$4,255.00 | — |
| Stony Brook University Hospital Stony Brook, NY · (631) 444-4000 ASSAY OF FREE THYROXINE File of Jun 10, 2026 · source file | $301.00 | $301.00 | $9.02–$4,255.00 | — |
| Memorial Hospital for Cancer and Allied Diseases Middletown, NJ HC Assay of Free Thyroxine - T4 Free File of Dec 1, 2025 · source file | $311.00 | $311.00 | $28.81–$279.90 | — |
| Memorial Hospital for Cancer and Allied Diseases New York, NY HC Assay of Free Thyroxine - T4 Free File of Dec 1, 2025 · source file | $311.00 | $311.00 | $31.96–$279.90 | — |
| Memorial Hospital for Cancer and Allied Diseases West Harrison, NY HC Assay of Free Thyroxine - T4 Free File of Dec 1, 2025 · source file | $311.00 | $311.00 | $31.96–$279.90 | — |
| Memorial Hospital for Cancer and Allied Diseases Basking Ridge, NJ HC Assay of Free Thyroxine - T4 Free File of Dec 1, 2025 · source file | $311.00 | $311.00 | $28.81–$279.90 | — |
| Saint Peters University Hospital New Brunswick, NJ · (732) 745-8600 THYROXINE FREE File of Nov 19, 2025 · source file | $311.00 | $319.00 | $8.00–$319.00 | 3% |
| Stony Brook Southampton Hospital Southampton, NY THYROXINE (THYROID CHEMICAL); FREE File of Jun 17, 2026 · source file | $339.17 | $339.17 | $9.02–$11.73 | — |
| New York Community Hospital of Brooklyn Brooklyn, NY · (718) 692-5302 FT4 File of Apr 1, 2026 · source file | $346.48 | $346.48 | — | — |
| Brooklyn Hospital Center at Downtown Campus Brooklyn, NY · (718) 250-8000 THYROXINE (THYROID CHEMICAL); FREE File of Jul 27, 2026 · source file | $375.21 | $375.21 | $7.22–$18.04 | — |
| Brooklyn Hospital Center at Downtown Campus Brooklyn, NY · (718) 250-8000 ASSAY OF FREE THYROXINE File of Jul 27, 2026 · source file | $429.57 | $429.57 | $7.22–$18.04 | — |
| Saint Peters University Hospital New Brunswick, NJ · (732) 745-8600 T4 FREE CALCULATED (FT4V) File of Nov 19, 2025 · source file | $910.00 | $919.00 | $8.00–$919.00 | 1% |
Outpatient: lowest $9.00, median $10.60, highest $375.21 — a 41.7× difference within the same market.
As an inpatient, the same code is billed by 32 facilities here, median $35.90. 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 59 of 68 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 8 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 free T4 test is, what the price covers and why prices differ: Free T4 test explained.
3 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 84439 ($57.62). 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, NYFREE T 4 | $0.01 | file |
| Interfaith Medical Center Brooklyn, NYFREE T 4 | $0.01 | file |
| Kingsbrook Jewish Medical Center Brooklyn, NYFREE T 4 | $0.01 | file |