Rheumatoid factor test cost in Seaford, DE — inpatient
In Seaford, DE, 2 hospitals list a cash price for rheumatoid factor (RF) test as an inpatient: from $36.96 to $73.00, with a median of $54.98. The lowest listed price is at Bayhealth Hospital, Sussex Campus — $18.02 less than the median here. Across Delaware, the median is $54.98 at 6 hospitals.
Cash prices at 2 facilities across 2 cities for code 86431, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Apr 1, 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 Seaford, DE.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Bayhealth Hospital, Sussex Campus lowest Milford, DE · (302) 422-3311 Hc Rheumatoid Factor Test Quant | $36.96 | $44.00 | — | 16% | Apr 1, 2026 source file |
| Bayhealth Hospital, Sussex Campus lowest Milford, DE · (302) 422-3311 Hc Rheumatoid Factor Quant | $36.96 | $44.00 | — | 16% | Apr 1, 2026 source file |
| TidalHealth Nanticoke Seaford, DE · (302) 629-6611 HC Rheumatoid Factor; Quantitative | $73.00 | $73.00 | $5.67–$57.67 | — | — source file |
Inpatient: lowest $36.96, median $54.98, highest $73.00 — a 2.0× difference within the same market.
As an outpatient, the same code is billed by 3 facilities here, median $73.00 — that is the price to compare if you are not being admitted.
Cash or insurance?
At the one hospital here that publishes insurer rates for this code, the cash price is not below the highest rate a health plan has negotiated. 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.