Rheumatoid factor test cost in Riverside, CA
In Riverside-San Bernardino-Ontario, CA, 23 hospitals list a cash price for rheumatoid factor (RF) test: from $3.00 to $185.00, with a median of $13.00. The lowest listed price is at Victor Valley Global Medical Center and 1 other hospital — $10.00 less than the median here. Across California, the median is $13.20 at 194 hospitals.
- The median here, $13.00, is 68% below the US median of $40.48.
- That is 2.3× Medicare's 2026 national rate for the same service ($5.67).
- Riverside, CA ranks 3rd of 5 metro areas in California by median, cheapest first.
- 7 of 23 hospitals list a cash price equal to their full list price, with no self-pay discount.
Cash prices at 23 facilities across 18 cities for code 86431, as an outpatient — the setting a self-pay patient normally buys. Collected Nov 1, 2026; the hospital files themselves were last updated between Jan 14, 2026 and Sep 30, 2026.
Lowest$3.00Victor Valley Global Medical Center + 1 more
Median$13.00half of hospitals charge less
Highest$185.00in this market
Difference61.7×highest vs lowest
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Riverside-San Bernardino-Ontario, CA.
median
Lowest $3.00Highest $185.00
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Victor Valley Global Medical Center lowest Victorville, CA · (760) 245-8691 C RHEUMATOID FACTOR QUANTITATIVE - LC File of May 13, 2026 · source file | $3.00 | $3.00 | $0.72–$49.00 | — |
| Riverside Community Hospital lowest Riverside, CA · (951) 788-3000 RA QN File of Sep 1, 2026 · source file | $3.00 | $3.00 | $0.45–$2.70 | — |
| Community Hospital of San Bernardino San Bernardino, CA · (909) 887-6333 RL-A-RA-FL 2003347 File of Sep 30, 2026 · source file | $3.12 | $8.00 | $1.60–$36.00 | 61% |
| Chino Valley Medical Center Chino, CA · (909) 627-6111 Hc Rheumatoid Factor, Quant File of Sep 1, 2026 · source file | $5.00 | $149.59 | $5.39–$149.59 | 97% |
| Desert Valley Hospital Victorville, CA · (760) 241-8000 RA FACTOR LC+2 more lines at this price File of Sep 1, 2026 · source file | $5.00 | $31.19 | $5.61–$55.51 | 84% |
| Montclair Hospital Medical Center Montclair, CA · (909) 625-8300 Hc Rheumatoid Factor, Quant File of Sep 1, 2026 · source file | $5.00 | $149.59 | $5.39–$149.59 | 97% |
| Victor Valley Global Medical Center Victorville, CA · (760) 245-8691 C RHEUMATOID FACTOR QUANTITATIVE - QST File of May 13, 2026 · source file | $5.00 | $5.00 | $1.20–$49.00 | — |
| St Bernardine Medical Center San Bernardino, CA · (909) 883-8711 RL-A-RA PNL R 3016635B File of Sep 30, 2026 · source file | $7.46 | $22.66 | $4.93–$36.00 | 67% |
| St Mary Medical Center Apple Valley, CA · (760) 242-2311 HC RHEUMATOID FACTOR QUANTITATIVE LAB File of Apr 1, 2026 · source file | $8.16 | $17.00 | — | 52% |
| St Bernardine Medical Center San Bernardino, CA · (909) 883-8711 RL-A-ILD PANEL2 3018869D File of Sep 30, 2026 · source file | $8.23 | $25.00 | $4.93–$36.00 | 67% |
| Palo Verde Hospital Blythe, CA · (760) 922-4115 Rheumatoid Arthritis Factor LC File of Jul 1, 2026 · source file | $8.34 | $11.12 | — | 25% |
| Community Hospital of San Bernardino San Bernardino, CA · (909) 887-6333 RL-A-RA PNL R 3016635B File of Sep 30, 2026 · source file | $8.82 | $22.66 | $4.54–$36.00 | 61% |
| Mountains Community Hospital Lake Arrowhead, CA · (909) 336-3651 RA SCRN W/REFX TITER CPT2 File of Jan 14, 2026 · source file | $9.00 | $22.50 | $10.13–$19.13 | 60% |
| Community Hospital of San Bernardino San Bernardino, CA · (909) 887-6333 RL-A-ILD PANEL2 3018869D File of Sep 30, 2026 · source file | $9.73 | $25.00 | $5.00–$36.00 | 61% |
| Mountains Community Hospital Lake Arrowhead, CA · (909) 336-3651 RHEUMATOID FACTOR File of Jan 14, 2026 · source file | $11.51 | $28.77 | $12.95–$24.45 | 60% |
| Kaiser Foundation Hospital - Moreno Valley Moreno Valley, CA · (951) 251-6530 RHEUMATOID FACTOR QUANTITATIVE File of Apr 1, 2026 · source file | $13.00 | $25.00 | $3.00–$10.00 | 48% |
| Kaiser Foundation Hospital - Riverside Riverside, CA · (951) 353-2000 RHEUMATOID FACTOR QUANTITATIVE File of Apr 1, 2026 · source file | $13.00 | $25.00 | $3.00–$10.00 | 48% |
| Kaiser Ontario Medical Center Campus Ontario, CA · (909) 427-5000 RHEUMATOID FACTOR QUANTITATIVE File of Apr 1, 2026 · source file | $13.00 | $25.00 | $3.00–$10.00 | 48% |
| Kaiser Foundation Hospital - Fontana Fontana, CA · (909) 427-5000 RHEUMATOID FACTOR QUANTITATIVE File of Apr 1, 2026 · source file | $13.00 | $25.00 | $3.00–$10.00 | 48% |
| San Bernardino County Colton, CA · (909) 580-1000 HC RHEUMATOID FACTOR, QUANT - CRYOGLOBULIN REFLEX File of Feb 25, 2026 · source file | $13.60 | $13.60 | $5.02–$9.86 | — |
| Redlands Community Hospital Redlands, CA · (909) 335-5500 Rheumatoid factor level File of Jun 19, 2026 · source file | $14.16 | $59.00 | $3.35–$403.00 | 76% |
| St Mary Medical Center Apple Valley, CA · (760) 242-2311 HC RHEUMATOID FACTOR QUANT File of Apr 1, 2026 · source file | $16.80 | $35.00 | — | 52% |
| San Bernardino County Colton, CA · (909) 580-1000 HC RHEUMATOID FACTOR, QUANT - RHEUMATOID FACTOR File of Feb 25, 2026 · source file | $17.50 | $17.50 | $5.02–$12.69 | — |
| St Bernardine Medical Center San Bernardino, CA · (909) 883-8711 RHEUMATOID FACTOR QN File of Sep 30, 2026 · source file | $20.08 | $61.00 | $4.93–$61.00 | 67% |
| Community Hospital of San Bernardino San Bernardino, CA · (909) 887-6333 RHEUMATOID FACTOR QN File of Sep 30, 2026 · source file | $24.11 | $62.00 | $5.67–$62.00 | 61% |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 HC Rheumatoid Factor (Rf)+1 more line at this price File of Mar 30, 2026 · source file | $69.97 | $69.97 | $4.02–$69.97 | — |
| Loma Linda University Childrens Hospital Loma Linda, CA · (909) 558-8000 HC RHEUMATOID FACTOR File of Sep 2, 2026 · source file | $76.50 | $170.00 | $4.59–$144.50 | 55% |
| Loma Linda University Medical Center Loma Linda, CA · (909) 558-4000 HC RHEUMATOID FACTOR File of Sep 2, 2026 · source file | $76.50 | $170.00 | $4.59–$153.00 | 55% |
| Loma Linda University Medical Center - Murrieta Murrieta, CA · (951) 290-4000 HC RHEUMATOID FACTOR File of Sep 2, 2026 · source file | $76.50 | $170.00 | $5.67–$127.50 | 55% |
| Hemet Global Medical Center Hemet, CA · (951) 652-2811 LAB RHEUM ARTHR QT File of Jun 15, 2026 · source file | $111.00 | $111.00 | $5.02–$111.00 | — |
| Menifee Global Medical Center Menifee, CA · (951) 679-8888 LAB RHEUM ARTHR QT File of May 20, 2026 · source file | $111.00 | $111.00 | $5.02–$111.00 | — |
| San Antonio Regional Hospital Upland, CA · (909) 985-2811 Rheumatoid factor level File of Apr 2, 2026 · source file | $185.00 | $149.00 | $4.54–$273.79 | -24% |
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
Insurers pay The lowest and highest rates this hospital has agreed with insurance plans for the same item, from its price file. If the cash price is below what your plan pays and you have not met your deductible, paying cash can cost you less. More
Off list How much lower the cash price is than the list price.
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
Outpatient: lowest $3.00, median $13.00, highest $185.00 — a 61.7× difference within the same market.
As an inpatient, the same code is billed by 16 facilities here, median $13.00. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
Cash or insurance?
At 12 of 21 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 4 it is below every plan's rate. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.
What rheumatoid factor test is, what the price covers and why prices differ: Rheumatoid factor test explained.
9 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 86431 ($28.80). Such a line is almost always a physician's fee billed separately, an assistant's share or a placeholder — a real charge, but not the price of the procedure itself.
| Hospital | Cash price | File |
|---|---|---|
| Barstow Community Hospital Barstow, CARheumatoid factor level | $1.56 | file |
| Menifee Global Medical Center Menifee, CAC RHEUMATOID FACTOR QUANTITATIVE - LC | $2.00 | file |
| Hemet Global Medical Center Hemet, CAC RHEUMATOID FACTOR QUANTITATIVE - LC | $2.00 | file |
| St Bernardine Medical Center San Bernardino, CARL-A-LUPUS COMP 50119C | $2.06 | file |
| St Bernardine Medical Center San Bernardino, CARL-A-RA 50465 | $2.31 | file |
| Community Hospital of San Bernardino San Bernardino, CARL-A-LUPUS COMP 50119C | $2.44 | file |
| St Bernardine Medical Center San Bernardino, CARL-A-RA-FL 2003347 | $2.64 | file |
| Community Hospital of San Bernardino San Bernardino, CARL-A-RA 50465 | $2.73 | file |
| Eisenhower Medical Center Rancho Mirage, CAHC Rheumatoid Factor | $2.81 | file |
File Link to the hospital's own price file.