Rheumatoid factor test cost in Idaho
In Idaho, 30 hospitals publish a cash price for rheumatoid factor (RF) test: from $7.50 to $348.74, with a median of $30.95. The lowest price is at Kootenai Health (Coeur D'Alene). The highest price is 46.5× the lowest.
- The median here, $30.95, is 24% below the US median of $40.48.
- That is 5.5× Medicare's 2026 national rate for the same service ($5.67).
- Idaho ranks 12th of 50 states by median, cheapest first.
- 11 of 30 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 6, 2026. See them on a map
Lowest$7.50Kootenai Health
Median$30.95half of hospitals charge less
Highest$348.74in Idaho
Lowest saves$23.45vs the median
Hospitals in Idaho, cheapest first
| Hospital | Cash price | List price | File date |
|---|---|---|---|
| Kootenai Health lowest Coeur D'Alene · Coeur d'Alene, ID HC MAYO RAPAN-RHEUMATOID ARTHRITIS PANEL, SERUM | $7.50 | $10.00 | Mar 27, 2026 source file |
| Madison Memorial Hospital Rexburg · Rexburg, ID RHEUMATOID FACTOR LEVEL | $10.61 | $14.14 | Mar 26, 2026 source file |
| St Luke's Magic Valley Regional Medical Center Twin Falls · Twin Falls, ID | $13.84 | $13.84 | Mar 25, 2026 source file |
| St Luke's McCall McCall · McCall, ID | $13.84 | $13.84 | Mar 25, 2026 source file |
| St Luke's Nampa Medical Center Nampa · Boise City, ID | $13.84 | $13.84 | Mar 25, 2026 source file |
| St Luke's Regional Medical Center Boise · Boise City, ID | $13.84 | $13.84 | Mar 25, 2026 source file |
| St Luke's Wood River Medical Center Ketchum · Hailey, ID | $13.84 | $13.84 | Mar 25, 2026 source file |
| Gritman Medical Center Moscow · Moscow, ID RHEUMATOID FACTOR QUANTITATIVE | $18.00 | $18.00 | Aug 19, 2026 source file |
| Bear Lake County Memorial Hospital Montpelier · Montpelier, ID XRF | $19.55 | $23.00 | May 28, 2026 source file |
| Idaho Falls Community Hospital Idaho Falls · Idaho Falls, ID RHEUMATOID FACTOR LEVEL | $28.00 | $28.00 | Mar 16, 2026 source file |
| Mountain View Hospital Idaho Falls · Idaho Falls, ID RHEUMATOID FACTOR LEVEL | $28.00 | $28.00 | Mar 16, 2026 source file |
| Clearwater Valley Hospital and Clinics Orofino · Orofino, ID Rheumatoid factor level | $28.50 | $38.00 | Jul 17, 2026 source file |
| St Marys Hospital Cottonwood · Cottonwood, ID Rheumatoid factor level | $28.50 | $38.00 | Jul 20, 2026 source file |
| Saint Alphonsus Medical Center - Nampa Nampa · Boise City, ID HC Rheumatoid Factor Quantitative | $29.90 | $46.00 | Mar 31, 2026 source file |
| Saint Alphonsus Regional Medical Center - Boise Boise · Boise City, ID HC Rheumatoid Factor Quantitative | $29.90 | $46.00 | Mar 31, 2026 source file |
| Boundary Community Hospital Bonners Ferry · Bonners Ferry, ID Rheumatoid factor level | $32.00 | $40.00 | Jul 17, 2026 source file |
| Lost Rivers Medical Center Arco · Idaho Falls, ID Rheumatoid factor level | $32.80 | $41.00 | May 7, 2026 source file |
| Bingham Memorial Hospital Blackfoot · Blackfoot, ID Rheumatoid factor level | $49.70 | $71.00 | Oct 29, 2026 source file |
| Shoshone Medical Center Kellogg · Kellogg, ID Rheumatoid Arthritis Factor LC | $55.50 | $74.00 | Sep 29, 2026 source file |
| Weiser Memorial Hospital Weiser · Weiser, ID (RA PANEL) RHEUMATOID FACTOR QUANTITATIV | $58.40 | $77.87 | Aug 18, 2026 source file |
| Benewah Community Hospital Saint Maries · Saint Maries, ID Rheumatoid factor level | $60.30 | $67.00 | Oct 28, 2026 source file |
| Caribou Medical Center Soda Springs · Soda Springs, ID Rheumatoid factor level | $65.10 | $93.00 | Nov 3, 2026 source file |
| Steele Memorial Medical Center Salmon · Salmon, ID Rheumatoid factor level | $68.25 | $91.00 | Feb 26, 2026 source file |
| West Valley Medical Center Caldwell · Boise City, ID Rheumatoid factor; quantitative Other Outpatient | $68.75 | $68.75 | Sep 1, 2026 source file |
| Valor Health Emmett · Boise City, ID Rheumatoid factor level | $72.76 | $76.59 | Oct 28, 2026 source file |
| Northwest Specialty Hospital Post Falls · Coeur d'Alene, ID RHEUMATOID FACTOR QUANT | $93.00 | $93.00 | Mar 5, 2026 source file |
| Bonner General Hospital Sandpoint · Sandpoint, ID Rheumatoid factor level | $111.44 | $139.30 | Aug 1, 2026 source file |
| Teton Valley Health Care Driggs · Jackson, WY-ID Rheumatoid factor level | $112.00 | $140.00 | Jul 21, 2026 source file |
| Portneuf Medical Center Pocatello · Pocatello, ID Rheumatoid factor level | $120.00 | $200.00 | Mar 31, 2026 source file |
| Eastern Idaho Regional Medical Center Idaho Falls · Idaho Falls, ID RA QN | $348.74 | $348.74 | Sep 1, 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 |
|---|---|---|---|
| Boise City, ID | 6 | $13.84 | $29.90 |
| Idaho Falls, ID | 3 | $28.00 | $28.00 |
| Coeur d'Alene, ID | 2 | $7.50 | $50.25 |
| Bonners Ferry, ID | 1 | $32.00 | $32.00 |
| Blackfoot, ID | 1 | $49.70 | $49.70 |
| Cottonwood, ID | 1 | $28.50 | $28.50 |
| Hailey, ID | 1 | $13.84 | $13.84 |
| Idaho Falls, ID | 1 | $348.74 | $348.74 |
| Jackson, WY-ID | 1 | $112.00 | $112.00 |
| Kellogg, ID | 1 | $55.50 | $55.50 |
| McCall, ID | 1 | $13.84 | $13.84 |
| Montpelier, ID | 1 | $19.55 | $19.55 |
| Moscow, ID | 1 | $18.00 | $18.00 |
| Orofino, ID | 1 | $28.50 | $28.50 |
| Pocatello, ID | 1 | $120.00 | $120.00 |
| Rexburg, ID | 1 | $10.61 | $10.61 |
| Saint Maries, ID | 1 | $60.30 | $60.30 |
| Salmon, ID | 1 | $68.25 | $68.25 |
| Soda Springs, ID | 1 | $65.10 | $65.10 |
| Sandpoint, ID | 1 | $111.44 | $111.44 |
| Twin Falls, ID | 1 | $13.84 | $13.84 |
| Weiser, ID | 1 | $58.40 | $58.40 |
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
- 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
- South Dakota$82.40
- 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.