Rheumatoid factor test cost in Rockford, IL
In Rockford, IL, 1 hospital lists a cash price for rheumatoid factor (RF) test: from $110.44 to $110.44, with a median of $110.44. Across Illinois, the median is $57.75 at 101 hospitals.
Cash prices at 1 facility for code 86431, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 29, 2026; the hospital files themselves were last updated between Mar 1, 2026 and Mar 1, 2026.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Rockford Memorial Hospital Rockford, IL · (815) 968-6861 CHG RHEUMATOID FACTOR QUANTITATIVE | $110.44 | $147.26 | — | 25% | Mar 1, 2026 source file |
Outpatient: lowest $110.44, median $110.44, highest $110.44.
As an inpatient, the same code is billed by 1 facility here, median $110.44. 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.