Rheumatoid factor test cost in Detroit, MI — inpatient
In Detroit-Warren-Dearborn, MI, 14 hospitals list a cash price for rheumatoid factor (RF) test as an inpatient: from $6.72 to $87.75, with a median of $57.00. The lowest listed price is at Henry Ford Health and 1 other hospital — $50.28 less than the median here. Across Michigan, the median is $35.28 at 58 hospitals.
Cash prices at 14 facilities across 10 cities for code 86431, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 6, 2026 and Sep 2, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Detroit-Warren-Dearborn, MI.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Henry Ford Health lowest East China Township, MI · (810) 329-7111 RHEUMATOID FACTOR -LC | $6.72 | $12.00 | $7.74–$11.80 | 44% | — source file |
| Henry Ford Health lowest Detroit, MI · (313) 343-4000 RHEUMATOID FACTOR -LC | $6.72 | $12.00 | $4.62–$11.80 | 44% | — source file |
| Henry Ford Health lowest Detroit, MI · (313) 343-4000 RF, IGG BY EIA (RDL)-LC | $6.72 | $12.00 | $4.62–$11.80 | 44% | — source file |
| Henry Ford Health lowest East China Township, MI · (810) 329-7111 RF, IGG BY EIA (RDL)-LC | $6.72 | $12.00 | $7.74–$11.80 | 44% | — source file |
| Henry Ford Health Warren, MI · (586) 573-5000 RF, IGG BY EIA (RDL)-LC | $7.28 | $13.00 | $7.74–$11.80 | 44% | — source file |
| Henry Ford Health Warren, MI · (586) 573-5000 RHEUMATOID FACTOR -LC | $7.28 | $13.00 | $7.74–$11.80 | 44% | — source file |
| Henry Ford Health Novi, MI RHEUMATOID FACTOR;QUANTITATIVE | $14.56 | $26.00 | $3.83–$10.21 | 44% | — source file |
| Henry Ford Health Southfield, MI · (248) 849-3000 RHEUMATOID FACTOR;QUANTITATIVE | $14.56 | $26.00 | $4.13–$10.21 | 44% | — source file |
| Henry Ford Health Southfield, MI · (248) 849-3000 RHEUMATOID FACTOR;QUANTITATIVE | $14.56 | $26.00 | $4.13–$10.21 | 44% | — source file |
| Henry Ford Health East China Township, MI · (810) 329-7111 RHEUMATOID FACTOR;QUANTITATIVE | $15.36 | $27.42 | $7.74–$11.80 | 44% | — source file |
| Henry Ford Health Warren, MI · (586) 573-5000 RHEUMATOID FACTOR;QUANTITATIVE | $16.80 | $30.00 | $7.74–$11.80 | 44% | — source file |
| VHS Childrens Hospital of Michigan Detroit, MI · (313) 745-5437 RHEUMATOID FACTOR, QUANT | $21.75 | $29.00 | — | 25% | Apr 6, 2026 source file |
| Corewell Health Trenton Hospital Trenton, MI · (734) 671-3800 Hc Rheumatoid Factor Quant | $57.00 | $57.00 | — | — | — source file |
| Corewell Health Wayne Hospital Wayne, MI · (734) 467-4175 Hc Rheumatoid Factor Quant | $57.00 | $57.00 | — | — | — source file |
| William Beaumont Hospital Troy, MI · (248) 964-8800 Hc Rheumatoid Factor Quant | $57.00 | $57.00 | — | — | — source file |
| William Beaumont Hospital Grosse Pointe, MI · (313) 473-1000 Hc Rheumatoid Factor Quant | $57.00 | $57.00 | — | — | — source file |
| Beaumont Hospital - Taylor Taylor, MI · (313) 295-5000 Hc Rheumatoid Factor Quant | $57.00 | $57.00 | — | — | — source file |
| VHS Rehabilitation Institute of Michigan Detroit, MI RHEUMATOID FACTOR QUANT | $63.75 | $85.00 | — | 25% | Apr 8, 2026 source file |
| Henry Ford Health Detroit, MI · (313) 343-4000 RHEUMATOID FACTOR QUANTITATIVE | $68.32 | $122.00 | $4.62–$11.80 | 44% | — source file |
| Henry Ford Health East China Township, MI · (810) 329-7111 RHEUMATOID FACTOR QUANTITATIVE | $68.50 | $122.32 | $7.74–$11.80 | 44% | — source file |
| VHS Childrens Hospital of Michigan Detroit, MI · (313) 745-5437 RHEUMATOID FACTOR QUANT | $73.50 | $98.00 | — | 25% | Apr 6, 2026 source file |
| Henry Ford Health Warren, MI · (586) 573-5000 RHEUMATOID FACTOR QUANTITATIVE | $74.48 | $133.00 | $7.74–$11.80 | 44% | — source file |
| Harper University Hospital Detroit, MI · (313) 745-6211 RHEUMATOID FACTOR QUANT | $85.50 | $114.00 | $1.00–$7.74 | 25% | Aug 20, 2026 source file |
| Harper University Hospital Detroit, MI · (313) 745-6211 RHEUMATOID FACTOR QUANT | $85.50 | $114.00 | $1.00–$7.74 | 25% | Sep 2, 2026 source file |
| VHS Childrens Hospital of Michigan Detroit, MI · (313) 745-5437 LATEX FIXATION,RA FACTOR,QTY. | $86.25 | $115.00 | — | 25% | Apr 6, 2026 source file |
| VHS Detroit Receiving Hospital Detroit, MI · (313) 745-2941 RHEUMATOID FACTOR QUANT | $87.75 | $117.00 | — | 25% | Apr 7, 2026 source file |
Inpatient: lowest $6.72, median $57.00, highest $87.75 — a 13.1× difference within the same market.
As an outpatient, the same code is billed by 25 facilities here, median $22.50 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 3 of 6 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.
1 row held back from this comparison
It is priced below $1 or below a tenth of the national median for code 86431 ($38.28). 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.
| Henry Ford Health Southfield, MIREF-RA FACTOR QUANT SYNOVIAL | $3.36 | file |