Rheumatoid factor test cost in Washington
In Washington, 32 hospitals publish a cash price for rheumatoid factor (RF) test: from $3.89 to $140.70, with a median of $31.95. The lowest price is at Legacy Salmon Creek Medical Center (Vancouver). The highest price is 36.2× 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 Washington, cheapest first
By metro area
Each metro page compares every listing, including prices for both sides of the body.
| Metro area | Hospitals | Lowest | Median |
|---|---|---|---|
| Seattle-Tacoma-Bellevue, WA | 14 | $12.86 | $29.71 |
| Spokane-Spokane Valley, WA | 4 | $46.90 | $72.25 |
| Mount Vernon-Anacortes, WA | 2 | $54.60 | $67.70 |
| Portland-Vancouver-Hillsboro, OR-WA | 2 | $3.89 | $47.77 |
| Bellingham, WA | 1 | $69.55 | $69.55 |
| Bremerton-Silverdale-Port Orchard, WA | 1 | $39.53 | $39.53 |
| Centralia, WA | 1 | $24.96 | $24.96 |
| Friday Harbor, WA | 1 | $33.15 | $33.15 |
| Kennewick-Richland, WA | 1 | $79.10 | $79.10 |
| Longview-Kelso, WA | 1 | $93.60 | $93.60 |
| Olympia-Lacey-Tumwater, WA | 1 | $24.96 | $24.96 |
| Port Townsend, WA | 1 | $56.80 | $56.80 |
| Walla Walla, WA | 1 | $16.10 | $16.10 |
| Wenatchee-East Wenatchee, WA | 1 | $21.60 | $21.60 |
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
- South Dakota$43.10
- Tennessee$18.81
- Texas$20.70
- Utah$71.26
- Vermont$60.43
- Virginia$16.35
- West Virginia$36.50
- Wisconsin$57.50
- Wyoming$21.29
Median cash price across the state's hospitals.