Lab tests CPT 86431 California Outpatient

Rheumatoid factor test cost in California

In California, 93 hospitals publish a cash price for rheumatoid factor (RF) test: from $5.00 to $1,217.00, with a median of $13.20. The lowest price is at Centinela Hospital Medical Center (Inglewood) and 8 other hospitals. The highest price is 243.4× 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 24, 2026.

Lowest$5.00Centinela Hospital Medical Center + 8 more

Median$13.20half pay less

Highest$1,217.00in California

Lowest saves$8.20vs the median

Hospitals in California, cheapest first

Hospital	Cash price	List price	File date
Centinela Hospital Medical Center lowest Inglewood · Los Angeles-Long Beach-Anaheim, CA RHEUMATOID FACTOR QUANT	$5.00	$254.00	Sep 1, 2026 source file
Chino Valley Medical Center lowest Chino · Riverside-San Bernardino-Ontario, CA Hc Rheumatoid Factor, Quant	$5.00	$149.59	Sep 1, 2026 source file
Desert Valley Hospital lowest Victorville · Riverside-San Bernardino-Ontario, CA RHEUM FACTOR QN LC 1	$5.00	$18.71	Sep 1, 2026 source file
Encino Hospital Medical Center lowest Encino · Los Angeles-Long Beach-Anaheim, CA Rhumatoid Arthrits(RA)FactorLC	$5.00	$3.00	Sep 1, 2026 source file
La Palma Intercommunity Hospital lowest La Palma · Los Angeles-Long Beach-Anaheim, CA Hc Rheumatoid Factor, Quant	$5.00	$70.88	Sep 1, 2026 source file
Montclair Hospital Medical Center lowest Montclair · Riverside-San Bernardino-Ontario, CA Hc Rheumatoid Factor, Quant	$5.00	$149.59	Sep 1, 2026 source file
Paradise Valley Hospital lowest National City · San Diego-Chula Vista-Carlsbad, CA RA FACTOR QUAN	$5.00	$5.67	Sep 1, 2026 source file
Shasta Regional Medical Center lowest Redding · Redding, CA RHEUMATOID FACTOR QUANT	$5.00	$299.00	Sep 1, 2026 source file
Sherman Oaks Hospital lowest Sherman Oaks · Los Angeles-Long Beach-Anaheim, CA RF ISOTYPES IGG IGA IGM EIA LC	$5.00	$62.89	Sep 1, 2026 source file
UC San Diego Medical Center San Diego · San Diego-Chula Vista-Carlsbad, CA Rheumatoid factor level	$7.43	$13.50	Apr 1, 2026 source file
Cedars-Sinai Medical Center Los Angeles · Los Angeles-Long Beach-Anaheim, CA Laboratory Services	$7.90	$12.15	Nov 26, 2025 source file
Mission Hospital Regional Med Center Mission Viejo · Los Angeles-Long Beach-Anaheim, CA HC RHEUMATOID FACTOR QUANTITATIVE LAB	$8.16	$17.00	Apr 1, 2026 source file
St Joseph Hospital of Orange Orange · Los Angeles-Long Beach-Anaheim, CA HC RHEUMATOID FACTOR QUANTITATIVE LAB	$8.16	$17.00	Apr 1, 2026 source file
St Jude Hospital Fullerton · Los Angeles-Long Beach-Anaheim, CA HC RHEUMATOID FACTOR QUANTITATIVE LAB	$8.16	$17.00	Apr 1, 2026 source file
St Mary Medical Center Apple Valley · Riverside-San Bernardino-Ontario, CA HC RHEUMATOID FACTOR QUANTITATIVE LAB	$8.16	$17.00	Apr 1, 2026 source file
Grossmont Hospital La Mesa · San Diego-Chula Vista-Carlsbad, CA HC RHEUMATOID FACTOR BF	$8.30	$11.07	— source file
Sharp Chula Vista Medical Center Chula Vista · San Diego-Chula Vista-Carlsbad, CA HC RHEUMATOID FACTOR BF	$8.30	$11.07	— source file
Sharp Coronado Hospital and Healthcare Center Coronado · San Diego-Chula Vista-Carlsbad, CA HC RHEUMATOID FACTOR BF	$8.30	$11.07	— source file
Sharp Memorial Hospital San Diego · San Diego-Chula Vista-Carlsbad, CA HC RHEUMATOID FACTOR BF	$8.30	$11.07	— source file
Palo Verde Hospital Blythe · Riverside-San Bernardino-Ontario, CA Rheumatoid Arthritis Factor LC	$8.34	$11.12	Jul 1, 2026 source file
Petaluma Valley Hospital Petaluma · Santa Rosa-Petaluma, CA HC RHEUMATOID FACTOR QUANTITATIVE LAB	$8.67	$17.00	Apr 1, 2026 source file
Providence Queen of the Valley Medical Center Napa · Napa, CA HC RHEUMATOID FACTOR QUANTITATIVE LAB	$8.67	$17.00	Apr 1, 2026 source file
Providence Redwood Memorial Hospital Fortuna · Eureka-Arcata, CA HC RHEUMATOID FACTOR QUANTITATIVE LAB	$8.67	$17.00	Apr 1, 2026 source file
Providence Santa Rosa Memorial Hospital Santa Rosa · Santa Rosa-Petaluma, CA HC RHEUMATOID FACTOR QUANTITATIVE LAB	$8.67	$17.00	Apr 1, 2026 source file
Providence St Joseph Hospital Eureka · Eureka-Arcata, CA HC RHEUMATOID FACTOR QUANTITATIVE LAB	$8.67	$17.00	Apr 1, 2026 source file
Hoag Memorial Hospital Presbyterian Newport Beach · Los Angeles-Long Beach-Anaheim, CA HC Rheumatoid Factor Quant - Ana W/Reflex to Titer	$9.20	$14.16	Apr 1, 2026 source file
Cedars-Sinai Marina Hospital Marina del Rey · Los Angeles-Long Beach-Anaheim, CA Outpatient Global Laboratory, Radiology and Diagnostic Services	$10.74	$16.53	Nov 26, 2025 source file
Banner Lassen Medical Center Susanville · Susanville, CA LAB FACTOR RHEUMATOID QN	$11.47	$18.00	Feb 12, 2026 source file
County of Monterey Salinas · Salinas, CA Rheumatoid factor level	$12.25	$12.25	Aug 14, 2026 source file
Kaiser Foundation Hospital - Baldwin Park Baldwin Park · Los Angeles-Long Beach-Anaheim, CA RHEUMATOID FACTOR QUANTITATIVE	$13.00	$25.00	— source file
Kaiser Foundation Hospital - Downey Downey · Los Angeles-Long Beach-Anaheim, CA RHEUMATOID FACTOR QUANTITATIVE	$13.00	$25.00	— source file
Kaiser Foundation Hospital - Fontana Fontana · Riverside-San Bernardino-Ontario, CA RHEUMATOID FACTOR QUANTITATIVE	$13.00	$25.00	— source file
Kaiser Foundation Hospital - Los Angeles Los Angeles · Los Angeles-Long Beach-Anaheim, CA RHEUMATOID FACTOR QUANTITATIVE	$13.00	$25.00	— source file
Kaiser Foundation Hospital - Moreno Valley Moreno Valley · Riverside-San Bernardino-Ontario, CA RHEUMATOID FACTOR QUANTITATIVE	$13.00	$25.00	— source file
Kaiser Foundation Hospital - Ontario Ontario · Ontario, CA RHEUMATOID FACTOR QUANTITATIVE	$13.00	$25.00	— source file
Kaiser Foundation Hospital - Orange County - Anaheim Anaheim · Los Angeles-Long Beach-Anaheim, CA RHEUMATOID FACTOR QUANTITATIVE	$13.00	$25.00	— source file
Kaiser Foundation Hospital - Orange County - Irvine Irvine · Los Angeles-Long Beach-Anaheim, CA RHEUMATOID FACTOR QUANTITATIVE	$13.00	$25.00	— source file
Kaiser Foundation Hospital - Panorama City Panorama City · Los Angeles-Long Beach-Anaheim, CA RHEUMATOID FACTOR QUANTITATIVE	$13.00	$25.00	— source file
Kaiser Foundation Hospital - Riverside Riverside · Riverside-San Bernardino-Ontario, CA RHEUMATOID FACTOR QUANTITATIVE	$13.00	$25.00	— source file
Kaiser Foundation Hospital - San Diego - Clairemont Mesa San Diego · San Diego-Chula Vista-Carlsbad, CA RHEUMATOID FACTOR QUANTITATIVE	$13.00	$25.00	— source file
Kaiser Foundation Hospital - San Diego - Zion San Diego · San Diego-Chula Vista-Carlsbad, CA RHEUMATOID FACTOR QUANTITATIVE	$13.00	$25.00	— source file
Kaiser Foundation Hospital - San Marcos San Marcos · San Diego-Chula Vista-Carlsbad, CA RHEUMATOID FACTOR QUANTITATIVE	$13.00	$25.00	— source file
Kaiser Foundation Hospital - South Bay Harbor City · Los Angeles-Long Beach-Anaheim, CA RHEUMATOID FACTOR QUANTITATIVE	$13.00	$25.00	— source file
Kaiser Foundation Hospital - West la Los Angeles · Los Angeles-Long Beach-Anaheim, CA RHEUMATOID FACTOR QUANTITATIVE	$13.00	$25.00	— source file
Kaiser Foundation Hospital - Woodland Hills Woodland Hills · Los Angeles-Long Beach-Anaheim, CA RHEUMATOID FACTOR QUANTITATIVE	$13.00	$25.00	— source file
Fresno Community Hospital and Medical Center Fresno · Fresno, CA RHEUMATIOD FACTOR QUANT;Q	$13.20	$16.50	Jun 16, 2026 source file
Fresno Community Hospital and Medical Center Clovis · Fresno, CA RHEUMATIOD FACTOR QUANT;Q	$13.20	$16.50	Jun 15, 2026 source file
Providence Holy Cross Medical Center Mission Hills · Los Angeles-Long Beach-Anaheim, CA HC RHEUMATOID FACTOR QUANT	$15.40	$44.00	Apr 1, 2026 source file
Ridgecrest Regional Hospital Ridgecrest · Bakersfield-Delano, CA Rheumatoid factor quant	$15.58	$29.40	Sep 11, 2026 source file
Hayward Sisters Hospital Hayward · San Francisco-Oakland-Fremont, CA LC-RHEUMATOID FACTOR QUANT	$17.55	$58.50	Feb 23, 2026 source file
Providence Saint Joseph Medical Center Burbank · Los Angeles-Long Beach-Anaheim, CA HC RHEUMATOID FACTOR QUANT	$20.30	$58.00	Apr 1, 2026 source file
Madera Community Hospital Madera · Fresno, CA Rheumatoid factor level	$20.40	$34.00	Jul 30, 2026 source file
Providence Cedars Sinai Tarzana Medical Center Tarzana · Los Angeles-Long Beach-Anaheim, CA HC RHEUMATOID FACTOR QUANTITATIVE LAB	$21.70	$62.00	Apr 1, 2026 source file
Providence Little Co of Mary Medical Center San Pedro San Pedro · Los Angeles-Long Beach-Anaheim, CA HC RHEUMATOID FACTOR QUANT - RA TITER	$36.75	$105.00	Apr 1, 2026 source file
Providence Little Company of Mary Medical Center Torrance Torrance · Los Angeles-Long Beach-Anaheim, CA HC RHEUMATOID FACTOR QUANT - RA TITER	$36.75	$105.00	Apr 1, 2026 source file
Kaiser Foundation Hospital & Rehab Center - Vallejo Vallejo · Vallejo, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - Antioch Antioch · San Francisco-Oakland-Fremont, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - Fremont Fremont · San Francisco-Oakland-Fremont, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - Fresno Fresno · Fresno, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - Manteca Manteca · Stockton-Lodi, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - Modesto Modesto · Modesto, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - Oakland/Richmond Oakland · San Francisco-Oakland-Fremont, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - Redwood City Redwood City · San Francisco-Oakland-Fremont, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - Richmond Campus Richmond · Richmond, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - Roseville Roseville · Sacramento-Roseville-Folsom, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - Sacramento Sacramento · Sacramento-Roseville-Folsom, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - San Francisco San Francisco · San Francisco-Oakland-Fremont, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - San Jose San Jose · San Jose-Sunnyvale-Santa Clara, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - San Leandro San Leandro · San Francisco-Oakland-Fremont, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - San Rafael San Rafael · San Francisco-Oakland-Fremont, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - Santa Clara Santa Clara · San Jose-Sunnyvale-Santa Clara, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - Santa Rosa Santa Rosa · Santa Rosa-Petaluma, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - South Sacramento Sacramento · Sacramento-Roseville-Folsom, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - South San Francisco South San Francisco · San Francisco-Oakland-Fremont, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - Vacaville Vacaville · Vallejo, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
Kaiser Foundation Hospital - Walnut Creek Walnut Creek · San Francisco-Oakland-Fremont, CA RHEUMATOID FACTOR QUANTITATIVE	$45.36	$81.00	— source file
USC Arcadia Hospital Arcadia · Los Angeles-Long Beach-Anaheim, CA RF (RHEUMATOID FACTOR) QT	$52.85	$151.00	Jul 27, 2026 source file
Saint John's Health Center Santa Monica · Los Angeles-Long Beach-Anaheim, CA HC RHEUMATOID FACTOR QUANT	$53.90	$154.00	Apr 1, 2026 source file
Keck Hospital of USC Los Angeles · Los Angeles-Long Beach-Anaheim, CA Rheumatoid Factor Quant	$62.50	$62.50	Apr 1, 2026 source file
Shriners Childrens - Northern California Sacramento · Sacramento-Roseville-Folsom, CA RHEUMATOID FACTOR LEVEL	$64.90	$64.90	— source file
Riverside University Medical Center Moreno Valley · Riverside-San Bernardino-Ontario, CA HC Rheumatoid Factor (Rf)	$69.97	$69.97	— source file
USC Kenneth Norris Jr Cancer Hospital Los Angeles · Los Angeles-Long Beach-Anaheim, CA Rheumatoid Factor Quant	$76.25	$76.25	Apr 1, 2026 source file
Loma Linda University Behavioral Medicine Center Redlands · Riverside-San Bernardino-Ontario, CA HC RHEUMATOID FACTOR	$76.50	$170.00	Aug 31, 2026 source file
Loma Linda University Childrens Hospital Loma Linda · Riverside-San Bernardino-Ontario, CA HC RHEUMATOID FACTOR	$76.50	$170.00	Sep 2, 2026 source file
Loma Linda University Medical Center Loma Linda · Riverside-San Bernardino-Ontario, CA HC RHEUMATOID FACTOR	$76.50	$170.00	Sep 2, 2026 source file
Loma Linda University Medical Center - Murrieta Murrieta · Riverside-San Bernardino-Ontario, CA HC RHEUMATOID FACTOR	$76.50	$170.00	Sep 2, 2026 source file
Stanford Health Care Tri-Valley Pleasanton · San Francisco-Oakland-Fremont, CA HC Rheumatoid Factor Quant	$77.60	$194.00	Apr 1, 2026 source file
USC Verdugo Hills Hospital Glendale · Glendale, CA Rheumatoid Factor Quant	$88.75	$88.75	Apr 1, 2026 source file
Stanford Health Care Stanford · San Jose-Sunnyvale-Santa Clara, CA HC Rheumatoid Factor Quant	$92.40	$231.00	Apr 1, 2026 source file
NorthBay Medical Center Fairfield · Vallejo, CA Rheumatoid Factor Quantitative	$101.00	$101.00	Apr 1, 2026 source file
Lucile Salter Packard Children's Hospital at Stanford Palo Alto · San Jose-Sunnyvale-Santa Clara, CA HC Rheumatoid Factor Quant	$131.00	$262.00	Mar 31, 2026 source file
San Antonio Regional Hospital Upland · Riverside-San Bernardino-Ontario, CA Rheumatoid factor level	$185.00	$149.00	Apr 2, 2026 source file
Chinese Hospital Association San Francisco · San Francisco-Oakland-Fremont, CA Rheumatoid factor level	$1,217.00	$1,217.00	Jul 22, 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
Los Angeles-Long Beach-Anaheim, CA	28	$5.00	$13.00
Riverside-San Bernardino-Ontario, CA	14	$5.00	$13.00
San Francisco-Oakland-Fremont, CA	12	$17.55	$45.36
San Diego-Chula Vista-Carlsbad, CA	9	$5.00	$8.30
Fresno, CA	4	$13.20	$16.80
Sacramento-Roseville-Folsom, CA	4	$45.36	$45.36
San Jose-Sunnyvale-Santa Clara, CA	4	$45.36	$68.88
Santa Rosa-Petaluma, CA	3	$8.67	$8.67
Vallejo, CA	3	$45.36	$45.36
Eureka-Arcata, CA	2	$8.67	$8.67
Bakersfield-Delano, CA	1	$15.58	$15.58
Glendale, CA	1	$88.75	$88.75
Modesto, CA	1	$45.36	$45.36
Napa, CA	1	$8.67	$8.67
Ontario, CA	1	$13.00	$13.00
Richmond, CA	1	$45.36	$45.36
Redding, CA	1	$5.00	$5.00
Salinas, CA	1	$12.25	$12.25
Stockton-Lodi, CA	1	$45.36	$45.36
Susanville, CA	1	$11.47	$11.47

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

Median cash price across the state's hospitals.