Rheumatoid factor test cost in Ontario, OR — inpatient
In Ontario, OR-ID, 1 hospital lists a cash price for rheumatoid factor (RF) test as an inpatient: from $29.90 to $29.90, with a median of $29.90. Across Oregon, the median is $40.30 at 39 hospitals.
Cash prices at 1 facility for code 86431, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Mar 31, 2026 and Mar 31, 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 Ontario, OR-ID.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Saint Alphonsus Medical Center - Ontario lowest Ontario, OR · (541) 881-7000 HC Rheumatoid Factor Quantitative | $29.90 | $46.00 | $3.97–$44.62 | 35% | Mar 31, 2026 source file |
| Saint Alphonsus Medical Center - Ontario Ontario, OR · (541) 881-7000 HC Warde Rheumatoid Factor Quantitative | $42.90 | $66.00 | $3.97–$64.02 | 35% | Mar 31, 2026 source file |
| Saint Alphonsus Medical Center - Ontario Ontario, OR · (541) 881-7000 HC Warde Rheumatoid Factor Quantitative Body Fluid | $42.90 | $66.00 | $3.97–$64.02 | 35% | Mar 31, 2026 source file |
| Saint Alphonsus Medical Center - Ontario Ontario, OR · (541) 881-7000 HC Labcorp Rheumatoid Factor Quantitative | $53.30 | $82.00 | $3.97–$79.54 | 35% | Mar 31, 2026 source file |
Inpatient: lowest $29.90, median $29.90, highest $29.90.
As an outpatient, the same code is billed by 1 facility here, median $29.90 — that is the price to compare if you are not being admitted.
Cash or insurance?
At the one hospital here that publishes insurer rates for this code, the cash price is below the highest rate a health plan has negotiated. 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.