Rheumatoid factor test cost in North Dakota
In North Dakota, 8 hospitals publish a cash price for rheumatoid factor (RF) test: from $7.15 to $60.75, with a median of $23.36. The lowest price is at Mercy Hospital of Devils Lake (Devils Lake). The highest price is 8.5× the lowest.
Outpatient cash prices, one line per hospital — its lowest listed price for code 86431. Prices for both sides of the body and inpatient prices are not mixed in. Collected Sep 23, 2026.
Hospitals in North Dakota, cheapest first
| Hospital | Cash price | List price | File date |
|---|---|---|---|
| Mercy Hospital of Devils Lake lowest Devils Lake · Devils Lake, ND RHEUMATOID FACTOR | $7.15 | $17.01 | Feb 28, 2026 source file |
| Mercy Medical Center Williston · Williston, ND RHEUMATOID FACTOR | $9.86 | $17.00 | Feb 28, 2026 source file |
| Carrington Health Center Carrington · Carrington, ND RHEUMATOID FACTOR | $9.87 | $17.01 | Feb 28, 2026 source file |
| St Joseph's Hospital and Health Center Dickinson · Dickinson, ND RHEUMATOID FACTOR | $10.72 | $17.01 | Feb 28, 2026 source file |
| Sanford Hillsboro Medical Center Hillsboro · Hillsboro, ND RA FACTOR QUANT 86431 | $36.00 | $45.00 | Mar 4, 2026 source file |
| Sanford Mayville Medical Center Mayville · Mayville, ND RA FACTOR QUANT 86431 | $36.00 | $45.00 | Mar 4, 2026 source file |
| St. Alexius Medical Center Bismarck · Bismarck, ND HC RA QUANT | $39.27 | $77.00 | Feb 28, 2026 source file |
| Essentia Health Fargo Fargo · Fargo, ND-MN RHEUMATOID FACTOR QUANT | $60.75 | $81.00 | Jan 1, 2026 source file |
By metro area
Each metro page compares every listing, including prices for both sides of the body.
| Metro area | Hospitals | Lowest | Median |
|---|---|---|---|
| Bismarck, ND | 1 | $39.27 | $39.27 |
| Carrington, ND | 1 | $9.87 | $9.87 |
| Devils Lake, ND | 1 | $7.15 | $7.15 |
| Dickinson, ND | 1 | $10.72 | $10.72 |
| Fargo, ND-MN | 1 | $60.75 | $60.75 |
| Hillsboro, ND | 1 | $36.00 | $36.00 |
| Mayville, ND | 1 | $36.00 | $36.00 |
| Williston, ND | 1 | $9.86 | $9.86 |
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.
Rheumatoid factor (RF) test in other states
- Alabama$118.75
- Alaska$44.46
- Arizona$10.50
- Arkansas$41.89
- California$13.20
- Colorado$26.20
- Connecticut$38.53
- Delaware$54.98
- Florida$19.29
- Georgia$79.56
- Hawaii$18.60
- Idaho$13.84
- Illinois$37.50
- Indiana$33.60
- Iowa$41.78
- Kansas$26.48
- Kentucky$119.25
- Louisiana$20.07
- Maine$32.20
- Maryland$27.44
- Massachusetts$23.92
- Michigan$35.28
- Minnesota$40.55
- Mississippi$39.16
- Missouri$36.04
- Montana$36.80
- Nebraska$37.22
- Nevada$10.37
- New Hampshire$30.81
- New Jersey$6.52
- New Mexico$29.20
- New York$25.63
- North Carolina$67.50
- Ohio$31.85
- Oklahoma$28.68
- Oregon$40.30
- Pennsylvania$39.20
- Rhode Island$45.00
- South Carolina$80.00
- South Dakota$43.10
- Tennessee$18.81
- Texas$20.70
- Utah$71.26
- Vermont$60.43
- Virginia$16.35
- Washington$31.95
- West Virginia$36.50
- Wisconsin$57.50
- Wyoming$21.29
Median cash price across the state's hospitals.