Syphilis test (treponemal) cost in Green Bay, WI
In Green Bay, WI, 5 hospitals list a cash price for syphilis antibody test (Treponema pallidum): from $38.28 to $52.50, with a median of $38.28. The lowest listed price is at St Clare Memorial Hospital and 2 other hospitals. Across Wisconsin, the median is $52.50 at 97 hospitals.
Cash prices at 5 facilities across 2 cities for code 86780, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Nov 21, 2025 and Jun 27, 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 Green Bay, WI.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| St Clare Memorial Hospital lowest Oconto Falls, WI · (920) 846-3444 TREPONEMA PALLIDUM source file | $38.28 | $58.00 | $11.13–$58.00 | 34% |
| St Vincent Hospital of the Hospital Sisters of the Third Order of St Francis lowest Green Bay, WI · (920) 433-0111 TREPONEMA PALLIDUM source file | $38.28 | $58.00 | $11.13–$58.00 | 34% |
| St Marys Hospital Medical Center lowest Green Bay, WI · (920) 498-4200 TREPONEMA PALLIDUM source file | $38.28 | $58.00 | $11.13–$58.00 | 34% |
| Bellin Memorial Health Green Bay, WI · (920) 433-3500 ANTIBODY; TREPONEMA PALLIDUM+1 more line at this price File of Jun 27, 2026 · source file | $38.43 | $83.00 | $41.09–$74.70 | 54% |
| Aurora BayCare Medical Center Green Bay, WI · (920) 288-8000 AB, TREPONEMA PALLIDUM File of Nov 21, 2025 · source file | $52.50 | $105.00 | $10.59–$89.25 | 50% |
Outpatient: lowest $38.28, median $38.28, highest $52.50 — a 1.4× difference within the same market.
As an inpatient, the same code is billed by 5 facilities here, median $38.28. 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 5 of 5 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 1 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
A treponemal antibody test detects antibodies to the bacterium that causes syphilis. Many labs now screen with it first and confirm with an RPR (86592).
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.