Rheumatoid factor test cost in South Dakota
In South Dakota, 19 hospitals publish a cash price for rheumatoid factor (RF) test: from $16.20 to $111.60, with a median of $82.40. The lowest price is at Huron Regional Medical Center (Huron). The highest price is 6.9× the lowest.
- The median here, $82.40, is 104% above the US median of $40.48.
- That is 14.5× Medicare's 2026 national rate for the same service ($5.67).
- South Dakota ranks 49th of 50 states by median, cheapest first.
- 6 of 19 hospitals list a cash price equal to their full list price, with no self-pay discount.
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 Nov 8, 2026. See them on a map
Lowest$16.20Huron Regional Medical Center
Median$82.40half of hospitals charge less
Highest$111.60in South Dakota
Lowest saves$66.20vs the median
Hospitals in South Dakota, cheapest first
| Hospital | Cash price | List price | File date |
|---|---|---|---|
| Huron Regional Medical Center lowest Huron · Huron, SD Rheumatoid Factor Qnt SF | $16.20 | $27.00 | Mar 31, 2026 source file |
| Pioneer Memorial Hospital - Cah Viborg · Sioux Falls, SD-MN RA FACTOR QUANT 86431 | $22.00 | $22.00 | Apr 30, 2026 source file |
| Brookings Health System Brookings · Brookings, SD Rheumatoid Factor Fluid | $28.00 | $56.00 | May 18, 2026 source file |
| Sanford Canton Inwood Medical Center 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 |
| Madison Community Hospital Madison · Madison, SD HC Rheumatoid Factor, Quant - Rheumatoid Factor, Body Fluid | $45.00 | $45.00 | Oct 12, 2026 source file |
| Black Hills Surgical Hospital Rapid City · Rapid City, SD RHEUMATOID FACTOR QUANT SYNOVIAL FLUID- | $48.59 | $80.98 | Jan 30, 2026 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 |
| Mobridge Regional Hospital Mobridge · Mobridge, SD Rheumatoid factor level | $83.00 | $83.00 | Nov 4, 2026 source file |
| Monument Health Rapid City Hospital Rapid City · Rapid City, SD Rheumatoid factor level | $90.40 | $113.00 | Oct 22, 2026 source file |
| Monument Health Spearfish Hospital Spearfish · Spearfish, SD Rheumatoid factor level | $90.40 | $113.00 | Oct 20, 2026 source file |
| Monument Health Sturgis Hospital Sturgis · Rapid City, SD Rheumatoid factor level | $90.40 | $113.00 | Oct 21, 2026 source file |
| Winner Regional Healthcare Center Winner · Winner, SD RHEUMATOID FACTOR QUANT 86431 | $91.00 | $91.00 | May 7, 2026 source file |
| Hans P Peterson Memorial Hospital - Cah Philip · Philip, SD Ra Quan | $99.00 | $99.00 | Jul 1, 2024 source file |
| Douglas County Memorial Hospital Armour · Armour, SD LO RF TITER SYNOVIAL FLUID | $99.90 | $111.00 | Jan 9, 2026 source file |
| Bennett County Hospital & Nursing Home Martin · Martin, SD RHEUMATOID FACTOR QUANT | $104.65 | $104.65 | Jan 3, 2025 source file |
| Faulkton Area Medical Center Faulkton · Faulkton, SD RHEUMATOID FACTOR | $111.60 | $124.00 | Jul 17, 2026 source file |
Hospital The hospital that published the price, its city and the line exactly as written in its price file.
Cash price The hospital's own price for a patient paying without insurance (“discounted cash” in its price file). Hospitals must publish it under federal law, 45 CFR 180.50. Call to confirm it before booking. More
List price The hospital's full chargemaster price (“gross charge”) before any discount. Almost nobody pays it; the gap to the cash price shows what the self-pay discount is worth. More
File date When the hospital last updated its price file, as the file says itself. A dash means the file gives no date.
No cash discount This line's cash price equals the hospital's full list price. Many hospitals still reduce bills for uninsured patients: ask the billing office for its self-pay discount in writing. More
By metro area
Each metro page compares every listing, including prices for both sides of the body.
| Metro area | Hospitals | Lowest | Median |
|---|---|---|---|
| Rapid City, SD | 3 | $48.59 | $90.40 |
| Sioux Falls, SD-MN | 2 | $22.00 | $27.40 |
| Armour, SD | 1 | $99.90 | $99.90 |
| Brookings, SD | 1 | $28.00 | $28.00 |
| Chamberlain, SD | 1 | $82.40 | $82.40 |
| Clear Lake, SD | 1 | $52.80 | $52.80 |
| Faulkton, SD | 1 | $111.60 | $111.60 |
| Huron, SD | 1 | $16.20 | $16.20 |
| Madison, SD | 1 | $45.00 | $45.00 |
| Martin, SD | 1 | $104.65 | $104.65 |
| Mobridge, SD | 1 | $83.00 | $83.00 |
| Philip, SD | 1 | $99.00 | $99.00 |
| Spearfish, SD | 1 | $90.40 | $90.40 |
| Vermillion, SD | 1 | $35.20 | $35.20 |
| Webster, SD | 1 | $37.60 | $37.60 |
| Winner, SD | 1 | $91.00 | $91.00 |
Market A metro area (as the Census Bureau defines it) or, outside metro areas, a town. Each links to every hospital price there.
Hospitals How many hospitals publish a cash price for this code here. Each hospital counts once, at its lowest outpatient cash price.
Lowest The lowest cash price among those hospitals.
Median The middle cash price: half of the hospitals charge less, half charge more. One price per hospital. More
What rheumatoid factor test is, what the price covers and why prices differ: Rheumatoid factor test explained.
Rheumatoid factor (RF) test in other states
- Alabama$45.00
- Alaska$67.60
- Arizona$15.72
- Arkansas$28.80
- California$13.20
- Colorado$53.00
- Connecticut$47.13
- Delaware$54.98
- District of Columbia$79.50, 3 hospitals
- Florida$24.36
- Georgia$75.24
- Hawaii$60.45
- Idaho$30.95
- Illinois$62.61
- Indiana$48.75
- Iowa$54.74
- Kansas$49.00
- Kentucky$47.24
- Louisiana$23.52
- Maine$33.15
- Maryland$28.09
- Massachusetts$29.25
- Michigan$34.25
- Minnesota$48.17
- Mississippi$33.63
- Missouri$49.00
- Montana$59.88
- Nebraska$55.00
- Nevada$47.75
- New Hampshire$51.96
- New Jersey$6.52
- New Mexico$61.72
- New York$20.93
- North Carolina$42.60
- North Dakota$36.60
- Ohio$33.15
- Oklahoma$29.41
- Oregon$41.34
- Pennsylvania$39.10
- Puerto Rico$93.02, 4 hospitals
- Rhode Island$45.00
- South Carolina$68.87
- Tennessee$29.52
- Texas$45.62
- Utah$124.81
- Vermont$56.43
- Virginia$36.00
- Washington$39.99
- West Virginia$35.81
- Wisconsin$58.50
- Wyoming$45.81
Median cash price across the state's hospitals.