Rheumatoid factor test cost in New York, NY — inpatient
In New York-Newark-Jersey City, NY-NJ, 21 hospitals list a cash price for rheumatoid factor (RF) test as an inpatient: from $5.67 to $273.24, with a median of $6.80. The lowest listed price is at Hmh Hospitals — $1.13 less than the median here. Across New York, the median is $25.63 at 64 hospitals.
Cash prices at 21 facilities across 15 cities for code 86431, 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.
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 | File date |
|---|---|---|---|---|---|
| Hmh Hospitals lowest Neptune City, NJ RA FACTOR QUANT. | $5.67 | $114.00 | $18.92–$114.00 | 95% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ RHEUMATOID FACTOR- QUANT FLUI | $5.67 | $114.00 | $18.92–$114.00 | 95% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ REFLEX RHEUMATOID FACTOR TITER QST | $5.67 | $114.00 | $18.92–$114.00 | 95% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ RHEUMATOID FACTOR CSF QST | $5.67 | $114.00 | $18.92–$114.00 | 95% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ RHEUMATOID FACTOR QST | $5.67 | $114.00 | $18.92–$114.00 | 95% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ RHEUMATOID FACTOR BODY FLUID ARUP | $5.67 | $21.00 | $3.49–$21.00 | 73% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ FLUID RA | $5.67 | $153.00 | $25.40–$153.00 | 96% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ RHEUMATOID FACTOR | $5.67 | $22.00 | $3.65–$22.00 | 74% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ RHEUMOTOID FACTOR QUANTITATIVE | $5.67 | $118.00 | $19.59–$118.00 | 95% | Dec 31, 2025 source file |
| Hmh Hospitals lowest Neptune City, NJ RHEUMATOID FACTOR QUANTITATIVE | $5.67 | $208.00 | $34.53–$208.00 | 97% | Dec 31, 2025 source file |
| Morristown Medical Center Morristown, NJ · (973) 971-5450 Rheumatoid Factor Quant | $6.52 | $61.00 | — | 89% | — source file |
| Chilton Medical Center Pompton Plains, NJ · (973) 831-5000 Rheumatoid Factor Quant | $6.52 | $61.00 | — | 89% | — source file |
| Overlook Medical Center Summit, NJ · (908) 522-2000 Rheumatoid Factor Quant | $6.52 | $61.00 | — | 89% | — source file |
| CentraState Medical Center Freehold Township, NJ · (732) 294-7012 Rheumatoid Factor Quant | $6.52 | $61.00 | — | 89% | — source file |
| Newton Medical Center Newton, NJ · (973) 383-2121 Rheumatoid Factor Quant | $6.52 | $61.00 | — | 89% | — source file |
| University Hospital Newark, NJ · (973) 972-4300 RHEUMATOID FACTOR QUANTITATIVE | $6.52 | $188.31 | $4.49–$178.89 | 97% | Aug 13, 2026 source file |
| NYU Langone Hospital - Suffolk Patchogue, NY · (631) 654-7100 HC RHEUMATOID FACTOR, QUANT | $6.80 | $71.00 | $5.10–$169.02 | 90% | Jan 1, 2026 source file |
| NYU Langone Mineola, NY HC RHEUMATOID FACTOR, QUANT | $6.80 | $71.00 | $5.10–$169.02 | 90% | Jan 1, 2026 source file |
| NYU Langone Brooklyn, NY HC RHEUMATOID FACTOR, QUANT | $6.80 | $71.00 | $5.10–$169.02 | 90% | Jan 1, 2026 source file |
| NYU Langone New York, NY · (212) 263-7300 HC RHEUMATOID FACTOR, QUANT | $6.80 | $71.00 | $5.10–$169.02 | 90% | Jan 1, 2026 source file |
| NYU Langone New York, NY · (212) 263-7300 HC RHEUMATOID FACTOR, QUANT | $6.80 | $71.00 | $5.10–$169.02 | 90% | Jan 1, 2026 source file |
| Nassau University Medical Center East Meadow, NY · (516) 572-0123 Rheumatoid Factor | $13.30 | $19.00 | — | 30% | Oct 28, 2025 source file |
| Englewood Health Englewood, NJ · (201) 894-3000 Ra Titer 86431 | $14.90 | $149.00 | $11.65–$119.20 | 90% | Feb 2, 2026 source file |
| Nassau University Medical Center East Meadow, NY · (516) 572-0123 Rheum Factor Nephlo | $14.96 | $21.37 | — | 30% | Oct 28, 2025 source file |
| Englewood Health Englewood, NJ · (201) 894-3000 Xpld-Identra Ra Pan(Rafq)86431 | $24.40 | $244.00 | $19.08–$195.20 | 90% | Feb 2, 2026 source file |
| Englewood Health Englewood, NJ · (201) 894-3000 Rheumatoid Factor 86431 | $27.20 | $272.00 | $21.27–$217.60 | 90% | Feb 2, 2026 source file |
| Maimonides Medical Center Brooklyn, NY · (718) 283-6000 RHEUMATOID QUAN | $29.00 | $29.00 | — | — | Apr 1, 2026 source file |
| The Valley Hospital Paramus, NJ · (201) 447-8000 RHEUMATOID FACTOR (RF) | $30.60 | $51.00 | $4.54–$43.35 | 40% | — source file |
| Englewood Health Englewood, NJ · (201) 894-3000 Xpld- Rheumatoid Factor Quantitative Elisa , Igm | $44.80 | $448.00 | $35.03–$358.40 | 90% | Feb 2, 2026 source file |
| Englewood Health Englewood, NJ · (201) 894-3000 Xpld- áRheumatoid Factor Quantitative Elisa, Iga | $44.80 | $448.00 | $35.03–$358.40 | 90% | Feb 2, 2026 source file |
| Englewood Health Englewood, NJ · (201) 894-3000 Xpld-Rad Rheumatoid Factor (Turb) 86431 | $51.60 | $516.00 | $40.35–$412.80 | 90% | Feb 2, 2026 source file |
| The Valley Hospital Paramus, NJ · (201) 447-8000 Rheumatoid Factor, BF (Mayo) | $76.20 | $127.00 | $4.54–$107.95 | 40% | — source file |
| The Valley Hospital Paramus, NJ · (201) 447-8000 RF IGA, by EIA | $105.60 | $176.00 | $4.54–$149.60 | 40% | — source file |
| Mount Sinai Behavioral Health Center New York, NY HC Rheumatoid Factor Quant | $126.00 | $140.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Brooklyn Brooklyn, NY HC Rheumatoid Factor Quant | $126.00 | $140.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Morningside New York, NY HC Rheumatoid Factor Quant | $126.00 | $140.00 | — | 10% | Apr 1, 2026 source file |
| The Mount Sinai Hospital New York, NY · (212) 241-7981 HC Rheumatoid Factor Quant | $126.00 | $140.00 | — | 10% | Apr 1, 2026 source file |
| Mount Sinai Queens Long Island, NY HC Rheumatoid Factor Quant | $126.00 | $140.00 | — | 10% | Apr 1, 2026 source file |
| New York Eye and Ear Infirmary of Mount Sinai New York, NY · (212) 979-4000 RHEUMATOID FACTOR QUANT | $273.24 | $303.60 | — | 10% | Apr 1, 2026 source file |
Inpatient: lowest $5.67, median $6.80, highest $273.24 — a 48.2× difference within the same market.
As an outpatient, the same code is billed by 49 facilities here, median $6.80 — 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
Rheumatoid factor is an antibody found in many people with rheumatoid arthritis. The test is part of the workup for joint pain and swelling.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.