Rheumatoid factor test cost in Chicago, IL — inpatient
In Chicago-Naperville-Elgin, IL-IN, 32 hospitals list a cash price for rheumatoid factor (RF) test as an inpatient: from $5.00 to $163.00, with a median of $45.75. The lowest listed price is at Uchicago Medicine AdventHealth Glenoaks and 3 other hospitals — $40.75 less than the median here. Across Illinois, the median is $37.50 at 65 hospitals.
Cash prices at 32 facilities across 22 cities for code 86431, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Mar 17, 2025 and Apr 1, 2026.
Lowest$5.00Uchicago Medicine AdventHealth Glenoaks + 3 more
Median$45.75half pay less
Highest$163.00in this market
Difference32.6×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 Chicago-Naperville-Elgin, IL-IN.
median
Lowest $5.00Highest $288.00
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Uchicago Medicine AdventHealth Glenoaks lowest Glendale Heights, IL · (630) 545-8000 HC RHEUMATOID FACTOR, QUANT - LUPUS COMPREHENSIVE REFLEXIVE PANEL - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Glenoaks lowest Glendale Heights, IL · (630) 545-8000 HC RHEUMATOID FACTOR - LUPUS COMPREHENSIVE REFLEX PANEL - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Bolingbrook lowest Bolingbrook, IL · (630) 312-5000 HC RHEUMATOID FACTOR - LUPUS COMPREHENSIVE REFLEX PANEL - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Bolingbrook lowest Bolingbrook, IL · (630) 312-5000 HC RHEUMATOID FACTOR, QUANT - RHEUMATOID FACTOR | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Bolingbrook lowest Bolingbrook, IL · (630) 312-5000 HC RHEUMATOID FACTOR, QUANT - RHEUMATOID FACTOR, BODY FLUID | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Bolingbrook lowest Bolingbrook, IL · (630) 312-5000 HC RHEUMATOID FACTOR, QUANT - LUPUS COMPREHENSIVE REFLEXIVE PANEL - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Bolingbrook lowest Bolingbrook, IL · (630) 312-5000 HC RHEUMATOID FACTOR - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Bolingbrook lowest Bolingbrook, IL · (630) 312-5000 HC RHEUMATOID FACTOR - LUPUS COMPREHENSIVE REFLEX PANEL - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Glenoaks lowest Glendale Heights, IL · (630) 545-8000 HC RHEUMATOID FACTOR, QUANT - RHEUMATOID FACTOR | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Glenoaks lowest Glendale Heights, IL · (630) 545-8000 HC RHEUMATOID FACTOR, QUANT - RHEUMATOID FACTOR, BODY FLUID | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Glenoaks lowest Glendale Heights, IL · (630) 545-8000 HC RHEUMATOID FACTOR - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Glenoaks lowest Glendale Heights, IL · (630) 545-8000 HC RHEUMATOID FACTOR, QUANT - RHEUMATOID FACTOR | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Hinsdale lowest Hinsdale, IL · (630) 856-9000 HC RHEUMATOID FACTOR - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Hinsdale lowest Hinsdale, IL · (630) 856-9000 HC RHEUMATOID FACTOR, QUANT - LUPUS COMPREHENSIVE REFLEXIVE PANEL - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth La Grange lowest La Grange, IL · (708) 352-1200 HC RHEUMATOID FACTOR, QUANT - RHEUMATOID FACTOR | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth La Grange lowest La Grange, IL · (708) 352-1200 HC RHEUMATOID FACTOR, QUANT - RHEUMATOID FACTOR, BODY FLUID | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth La Grange lowest La Grange, IL · (708) 352-1200 HC RHEUMATOID FACTOR, QUANT - LUPUS COMPREHENSIVE REFLEXIVE PANEL - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth La Grange lowest La Grange, IL · (708) 352-1200 HC RHEUMATOID FACTOR - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth La Grange lowest La Grange, IL · (708) 352-1200 HC RHEUMATOID FACTOR - LUPUS COMPREHENSIVE REFLEX PANEL - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth La Grange lowest La Grange, IL · (708) 352-1200 HC RHEUMATOID FACTOR, QUANT - RHEUMATOID FACTOR | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth La Grange lowest La Grange, IL · (708) 352-1200 HC RHEUMATOID FACTOR, QUANT - RHEUMATOID FACTOR, BODY FLUID | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth La Grange lowest La Grange, IL · (708) 352-1200 HC RHEUMATOID FACTOR, QUANT - LUPUS COMPREHENSIVE REFLEXIVE PANEL - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth La Grange lowest La Grange, IL · (708) 352-1200 HC RHEUMATOID FACTOR - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth La Grange lowest La Grange, IL · (708) 352-1200 HC RHEUMATOID FACTOR - LUPUS COMPREHENSIVE REFLEX PANEL - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Hinsdale lowest Hinsdale, IL · (630) 856-9000 HC RHEUMATOID FACTOR, QUANT - RHEUMATOID FACTOR, BODY FLUID | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Hinsdale lowest Hinsdale, IL · (630) 856-9000 HC RHEUMATOID FACTOR, QUANT - RHEUMATOID FACTOR | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Hinsdale lowest Hinsdale, IL · (630) 856-9000 HC RHEUMATOID FACTOR - LUPUS COMPREHENSIVE REFLEX PANEL - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Hinsdale lowest Hinsdale, IL · (630) 856-9000 HC RHEUMATOID FACTOR - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Hinsdale lowest Hinsdale, IL · (630) 856-9000 HC RHEUMATOID FACTOR, QUANT - LUPUS COMPREHENSIVE REFLEXIVE PANEL - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Hinsdale lowest Hinsdale, IL · (630) 856-9000 HC RHEUMATOID FACTOR, QUANT - RHEUMATOID FACTOR, BODY FLUID | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Hinsdale lowest Hinsdale, IL · (630) 856-9000 HC RHEUMATOID FACTOR, QUANT - RHEUMATOID FACTOR | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Glenoaks lowest Glendale Heights, IL · (630) 545-8000 HC RHEUMATOID FACTOR - LUPUS COMPREHENSIVE REFLEX PANEL - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Glenoaks lowest Glendale Heights, IL · (630) 545-8000 HC RHEUMATOID FACTOR - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Glenoaks lowest Glendale Heights, IL · (630) 545-8000 HC RHEUMATOID FACTOR, QUANT - LUPUS COMPREHENSIVE REFLEXIVE PANEL - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Hinsdale lowest Hinsdale, IL · (630) 856-9000 HC RHEUMATOID FACTOR - LUPUS COMPREHENSIVE REFLEX PANEL - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Glenoaks lowest Glendale Heights, IL · (630) 545-8000 HC RHEUMATOID FACTOR, QUANT - RHEUMATOID FACTOR, BODY FLUID | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Bolingbrook lowest Bolingbrook, IL · (630) 312-5000 HC RHEUMATOID FACTOR, QUANT - RHEUMATOID FACTOR | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Bolingbrook lowest Bolingbrook, IL · (630) 312-5000 HC RHEUMATOID FACTOR, QUANT - RHEUMATOID FACTOR, BODY FLUID | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Bolingbrook lowest Bolingbrook, IL · (630) 312-5000 HC RHEUMATOID FACTOR, QUANT - LUPUS COMPREHENSIVE REFLEXIVE PANEL - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Bolingbrook lowest Bolingbrook, IL · (630) 312-5000 HC RHEUMATOID FACTOR - ARUP | $5.00 | $20.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Glenoaks Glendale Heights, IL · (630) 545-8000 HC RHEUMATOID FACTOR - RHEUMATOID ARTHRITIS PANEL - ARUP | $22.50 | $90.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Bolingbrook Bolingbrook, IL · (630) 312-5000 HC RHEUMATOID FACTOR - RHEUMATOID ARTHRITIS PANEL - ARUP | $22.50 | $90.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth La Grange La Grange, IL · (708) 352-1200 HC RHEUMATOID FACTOR - RHEUMATOID ARTHRITIS PANEL - ARUP | $22.50 | $90.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Bolingbrook Bolingbrook, IL · (630) 312-5000 HC RHEUMATOID FACTOR - RHEUMATOID ARTHRITIS PANEL - ARUP | $22.50 | $90.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth La Grange La Grange, IL · (708) 352-1200 HC RHEUMATOID FACTOR - RHEUMATOID ARTHRITIS PANEL - ARUP | $22.50 | $90.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Hinsdale Hinsdale, IL · (630) 856-9000 HC RHEUMATOID FACTOR - RHEUMATOID ARTHRITIS PANEL - ARUP | $22.50 | $90.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Hinsdale Hinsdale, IL · (630) 856-9000 HC RHEUMATOID FACTOR - RHEUMATOID ARTHRITIS PANEL - ARUP | $22.50 | $90.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Glenoaks Glendale Heights, IL · (630) 545-8000 HC RHEUMATOID FACTOR - RHEUMATOID ARTHRITIS PANEL - ARUP | $22.50 | $90.00 | — | 75% | Apr 1, 2026 source file |
| La Rabida Children's Hospital|LaRabida Childrens Hospital Chicago, IL · (773) 363-6700 RHEUMATOID FACTOR | $37.01 | $37.01 | — | — | Apr 1, 2026 source file |
| Advocate Childrens Hospital Oak Lawn Oak Lawn, IL RHEUMATOID FACTOR QUANTITATIVE | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Christ Medical Center Oak Lawn, IL · (708) 684-8000 RHEUMATOID FACTOR QUANTITATIVE | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Childrens Hospital Park Ridge Park Ridge, IL RHEUMATOID FACTOR QUANTITATIVE | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Condell Medical Center Libertyville, IL · (847) 362-2900 RHEUMATOID FACTOR QUANTITATIVE | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Good Samaritan Hospital Downers Grove, IL · (630) 275-5900 RHEUMATOID FACTOR QUANTITATIVE | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Illinois Masonic Medical Center Chicago, IL · (773) 975-1600 RHEUMATOID FACTOR QUANTITATIVE | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Lutheran General Hospital Park Ridge, IL · (847) 723-2210 RHEUMATOID FACTOR QUANTITATIVE | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Sherman Hospital Elgin, IL · (847) 742-9800 RHEUMATOID FACTOR QUANTITATIVE | $37.50 | $75.00 | $32.78–$67.50 | 50% | Nov 4, 2025 source file |
| Advocate South Suburban Hospital Hazel Crest, IL RHEUMATOID FACTOR QUANTITATIVE | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Trinity Hospital Chicago, IL · (773) 967-5002 RHEUMATOID FACTOR QUANTITATIVE | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| Advocate Good Shepherd Hospital Barrington, IL · (847) 381-9600 RHEUMATOID FACTOR QUANTITATIVE | $37.50 | $75.00 | $32.78–$60.00 | 50% | Nov 4, 2025 source file |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Rheumatoid Factor; Quantitative-Laf | $54.00 | $54.00 | — | — | Apr 1, 2026 source file |
| Presence Saint Joseph Hospital - Chicago Chicago, IL · (773) 665-3000 HC RHEUMATOID FACTOR - RA TEST | $57.75 | $175.00 | $5.67–$23.16 | 67% | — source file |
| Louis A Weiss Memorial Hospital Chicago, IL · (773) 878-8700 Rheumatoid Arthritis Factor SO | $69.67 | $204.92 | $133.20 | 66% | Mar 17, 2025 source file |
| Louis A Weiss Memorial Hospital Chicago, IL · (773) 878-8700 Rheumatoid Factor | $69.67 | $204.92 | $133.20 | 66% | Mar 17, 2025 source file |
| Resilience Healthcare West Suburban Medical Center Oak Park, IL · (708) 383-6200 Rheumatoid Arthritis Factor SO | $79.33 | $233.33 | $151.66 | 66% | Mar 17, 2025 source file |
| Resilience Healthcare West Suburban Medical Center Oak Park, IL · (708) 383-6200 Rheumatoid Factor | $79.33 | $233.33 | $151.66 | 66% | Mar 17, 2025 source file |
| NorthShore University HealthSystems Evanston Hospital Evanson, IL · (847) 570-2000 Rheumatoid Factor Quant* | $84.50 | $130.00 | $21.19–$69.55 | 35% | — source file |
| NorthShore University HealthSystems Glenbrook Hospital Glenview, IL Rheumatoid Factor Quant* | $84.50 | $130.00 | $21.19–$69.55 | 35% | — source file |
| NorthShore University HealthSystems Skokie Hospital Skokie, IL Rheumatoid Factor Quant* | $84.50 | $130.00 | $21.19–$69.55 | 35% | — source file |
| NorthShore University HealthSystems Highland Park Hospital Highland Park, IL Rheumatoid Factor Quant* | $84.50 | $130.00 | $21.19–$69.55 | 35% | — source file |
| Elmhurst Memorial Hospital Elmhurst, IL · (331) 221-1000 HC RHEUMATOID FACTOR QUANTITATIVE | $112.00 | $112.00 | — | — | Apr 1, 2026 source file |
| Edward Hospital Naperville, IL · (630) 527-3000 HC RHEUMATOID FACTOR QUANTITATIVE | $112.00 | $112.00 | — | — | Apr 1, 2026 source file |
| Northwest Community Hospital Arlington Heights, IL · (847) 618-1000 Hb Rheumatoid Factor Quant | $123.00 | $123.00 | — | — | Apr 1, 2026 source file |
| Endeavor Health Clinical Operations Highland Park, IL HB RHEUMATOID FACTOR, QUANT* | $130.00 | $130.00 | — | — | Apr 1, 2026 source file |
| Northshore University Healthsystem - Evanston Hospital Evanston, IL · (847) 570-2000 HB RHEUMATOID FACTOR, QUANT* | $130.00 | $130.00 | — | — | Apr 1, 2026 source file |
| Swedish Covenant Health Chicago, IL · (773) 878-8200 HB RHEUMATOID FACTOR, QUANT* | $130.00 | $130.00 | — | — | Apr 1, 2026 source file |
| Ann & Robert H. Lurie Children's Hospital of Chicago Chicago, IL · (312) 227-4000 RHEUMATOID FACTOR QUANT SERUM | $147.00 | $210.00 | $77.70–$3,678.00 | 30% | — source file |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Rheumatoid Factor; Igm | $159.00 | $159.00 | — | — | Apr 1, 2026 source file |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Rheumatoid Factor; Iga | $159.00 | $159.00 | — | — | Apr 1, 2026 source file |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Rheumatoid Factor; Igg | $159.00 | $159.00 | — | — | Apr 1, 2026 source file |
| Ingalls Memorial Hospital Harvey, IL · (708) 333-2300 Hc Rheumatoid Factor; Igm | $163.00 | $163.00 | — | — | Apr 1, 2026 source file |
| Ingalls Memorial Hospital Harvey, IL · (708) 333-2300 Hc Rheumatoid Factor; Iga | $163.00 | $163.00 | — | — | Apr 1, 2026 source file |
| Ingalls Memorial Hospital Harvey, IL · (708) 333-2300 Hc Rheumatoid Factor; Quantitative | $163.00 | $163.00 | — | — | Apr 1, 2026 source file |
| Ingalls Memorial Hospital Harvey, IL · (708) 333-2300 Hc Rheumatoid Factor; Igg | $163.00 | $163.00 | — | — | Apr 1, 2026 source file |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Rheumatoid Factor; Quantitative | $288.00 | $288.00 | — | — | Apr 1, 2026 source file |
Inpatient: lowest $5.00, median $45.75, highest $163.00 — a 32.6× difference within the same market.
As an outpatient, the same code is billed by 50 facilities here, median $37.50 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 14 of 19 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 2 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 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.