Rheumatoid factor test cost in Washington, DC
In Washington-Arlington-Alexandria, DC-VA-MD-WV, 7 hospitals list a cash price for rheumatoid factor (RF) test: from $7.00 to $48.00, with a median of $48.00. The lowest listed price is at Sentara Northern Virginia Medical Center — $41.00 less than the median here.
Cash prices at 7 facilities across 6 cities for code 86431, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Apr 1, 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 Washington-Arlington-Alexandria, DC-VA-MD-WV.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Sentara Northern Virginia Medical Center lowest Woodbridge, VA · (703) 523-1000 Chgl (Qu) Cryoglobulin Reflex, S/O | $7.00 | $14.00 | — | 50% | Apr 1, 2026 source file |
| Sentara Northern Virginia Medical Center Woodbridge, VA · (703) 523-1000 Chgl (Qu) Rheumatoid Arthritis Diagnostic Identra(R) Pnl 2, S/O | $10.50 | $21.00 | — | 50% | Apr 1, 2026 source file |
| Sentara Northern Virginia Medical Center Woodbridge, VA · (703) 523-1000 Chgl Lc-Rheumassure-Ra Factor | $20.50 | $41.00 | — | 50% | Apr 1, 2026 source file |
| Sentara Northern Virginia Medical Center Woodbridge, VA · (703) 523-1000 Chgl (Qu) 86431 ?Rheumatoid Factor, La Titer, S/O | $26.50 | $53.00 | — | 50% | Apr 1, 2026 source file |
| Sentara Northern Virginia Medical Center Woodbridge, VA · (703) 523-1000 Chgl Ra, Quant. | $31.00 | $62.00 | — | 50% | Apr 1, 2026 source file |
| Sentara Northern Virginia Medical Center Woodbridge, VA · (703) 523-1000 Chgl Rf Quant | $31.00 | $62.00 | — | 50% | Apr 1, 2026 source file |
| Jefferson Medical Center Ranson, WV · (304) 728-1600 RHEUMATOID FACTOR QUANT | $37.00 | $74.00 | — | 50% | — source file |
| Inova Loudoun Hospital Leesburg, VA · (703) 858-6600 HC RHEUMATOID FACTOR QUANT | $48.00 | $96.00 | $5.67–$74.88 | 50% | — source file |
| Inova Alexandria Hospital Alexandria, VA · (703) 504-3167 HC RHEUMATOID FACTOR QUANT | $48.00 | $96.00 | $5.67–$74.88 | 50% | — source file |
| Inova Mount Vernon Hospital Alexandria, VA · (703) 664-7105 HC RHEUMATOID FACTOR QUANT | $48.00 | $96.00 | $5.67–$74.88 | 50% | — source file |
| Inova Fairfax Hospital Falls Church, VA · (703) 698-1110 HC RHEUMATOID FACTOR QUANT | $48.00 | $96.00 | $5.67–$74.88 | 50% | — source file |
| Inova Fair Oaks Hospital Fairfax, VA · (703) 391-4170 HC RHEUMATOID FACTOR QUANT | $48.00 | $96.00 | $5.67–$74.88 | 50% | — source file |
Outpatient: lowest $7.00, median $48.00, highest $48.00 — a 6.9× difference within the same market.
As an inpatient, the same code is billed by 6 facilities here, median $48.00. 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 5 of 5 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
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.