Rheumatoid factor test cost in Eureka, CA
In Eureka-Arcata, CA, 2 hospitals list a cash price for rheumatoid factor (RF) test: from $8.67 to $8.67, with a median of $8.67. The lowest listed price is at Providence Redwood Memorial Hospital and 1 other hospital. Across California, the median is $13.20 at 93 hospitals.
Cash prices at 2 facilities across 2 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 Eureka-Arcata, CA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Providence Redwood Memorial Hospital lowest Fortuna, CA · (707) 445-8121 HC RHEUMATOID FACTOR QUANTITATIVE LAB | $8.67 | $17.00 | — | 49% | Apr 1, 2026 source file |
| Providence St Joseph Hospital lowest Eureka, CA · (707) 445-8121 HC RHEUMATOID FACTOR QUANTITATIVE LAB | $8.67 | $17.00 | — | 49% | Apr 1, 2026 source file |
| Providence Redwood Memorial Hospital Fortuna, CA · (707) 445-8121 HC RHEUMATOID FACTOR QUANT | $17.85 | $35.00 | — | 49% | Apr 1, 2026 source file |
| Providence St Joseph Hospital Eureka, CA · (707) 445-8121 HC RHEUMATOID FACTOR QUANT | $17.85 | $35.00 | — | 49% | Apr 1, 2026 source file |
| Providence Redwood Memorial Hospital Fortuna, CA · (707) 445-8121 HC RHEUMATOID FACTOR QUANT | $55.08 | $108.00 | — | 49% | Apr 1, 2026 source file |
| Providence Redwood Memorial Hospital Fortuna, CA · (707) 445-8121 HC RHEUMATOID FACTOR QUANTITATIVE LAB | $55.08 | $108.00 | — | 49% | Apr 1, 2026 source file |
| Providence St Joseph Hospital Eureka, CA · (707) 445-8121 HC RHEUMATOID FACTOR QUANT | $57.63 | $113.00 | — | 49% | Apr 1, 2026 source file |
| Providence St Joseph Hospital Eureka, CA · (707) 445-8121 HC RHEUMATOID FACTOR QUANTITATIVE LAB | $57.63 | $113.00 | — | 49% | Apr 1, 2026 source file |
Outpatient: lowest $8.67, median $8.67, highest $8.67.
As an inpatient, the same code is billed by 2 facilities here, median $8.67. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
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.