Rheumatoid factor test cost in South Dakota
In South Dakota, 6 hospitals publish a cash price for rheumatoid factor (RF) test: from $32.80 to $82.40, with a median of $43.10. The lowest price is at Sanford Canton Inwood Medical Center (Canton). The highest price is 2.5× 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 South Dakota, cheapest first
| Hospital | Cash price | List price | File date |
|---|---|---|---|
| Sanford Canton Inwood Medical Center lowest Canton · Sioux Falls, SD-MN RA FACTOR QUANT 86431 | $32.80 | $41.00 | Mar 4, 2026 source file |
| Sanford Vermillion Hospital Vermillion · Vermillion, SD RA FACTOR QUANT 86431 | $35.20 | $44.00 | Mar 4, 2026 source file |
| Sanford Webster Hospital Webster · Webster, SD RA FACTOR QUANT 86431 | $37.60 | $47.00 | Mar 4, 2026 source file |
| Black Hills Surgical Hospital Rapid City · Rapid City, SD RHEUMATOID FACTOR QUANTITATIVE- | $48.59 | $80.98 | — source file |
| Sanford Clear Lake Medical Center Clear Lake · Clear Lake, SD RA FACTOR QUANT 86431 | $52.80 | $66.00 | Mar 4, 2026 source file |
| Sanford Chamberlain Medical Center Chamberlain · Chamberlain, SD RA FACTOR QUANT 86431 | $82.40 | $103.00 | Mar 4, 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 |
|---|---|---|---|
| Chamberlain, SD | 1 | $82.40 | $82.40 |
| Clear Lake, SD | 1 | $52.80 | $52.80 |
| Rapid City, SD | 1 | $48.59 | $48.59 |
| Sioux Falls, SD-MN | 1 | $32.80 | $32.80 |
| Vermillion, SD | 1 | $35.20 | $35.20 |
| Webster, SD | 1 | $37.60 | $37.60 |
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
- North Dakota$23.36
- Ohio$31.85
- Oklahoma$28.68
- Oregon$40.30
- Pennsylvania$39.20
- Rhode Island$45.00
- South Carolina$80.00
- 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.