CA-125 test cost in Green Bay, WI
In Green Bay, WI, 5 hospitals list a cash price for CA-125 blood test (ovarian cancer marker): from $52.78 to $138.60, with a median of $138.60. The lowest listed price is at Bellin Memorial Health — $85.82 less than the median here. Across Wisconsin, the median is $117.50 at 78 hospitals.
Cash prices at 5 facilities across 2 cities for code 86304, 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 | File date |
|---|---|---|---|---|---|
| Bellin Memorial Health lowest Green Bay, WI · (920) 433-3500 IMMUNOASSAY FOR TUMOR ANTIGEN, QUANT; CA 125 | $52.78 | $114.00 | $56.43–$102.60 | 54% | Jun 27, 2026 source file |
| Bellin Memorial Health Green Bay, WI · (920) 433-3500 IMMUNOASSAY FOR TUMOR ANTIGEN, QUANTITATIVE; CA 125 | $60.19 | $130.00 | $64.35–$117.00 | 54% | Jun 27, 2026 source file |
| Aurora BayCare Medical Center Green Bay, WI · (920) 288-8000 CANCER ANTIGEN 125 | $117.50 | $235.00 | $16.65–$199.75 | 50% | Nov 21, 2025 source file |
| St Marys Hospital Medical Center Green Bay, WI · (920) 498-4200 IMMUNOASSAY TUMOR CA 125 | $138.60 | $210.00 | $20.81–$210.00 | 34% | — source file |
| St Clare Memorial Hospital Oconto Falls, WI · (920) 846-3444 HC TUMOR AG CA 125 | $138.60 | $210.00 | $20.81–$210.00 | 34% | — source file |
| St Vincent Hospital of the Hospital Sisters of the Third Order of St Francis Green Bay, WI · (920) 433-0111 IMMUNOASSAY TUMOR CA 125 | $138.60 | $210.00 | $20.81–$210.00 | 34% | — source file |
| St Clare Memorial Hospital Oconto Falls, WI · (920) 846-3444 HC TUMOR AG CA 125-PRV 72 HR | $151.80 | $230.00 | $20.81–$230.00 | 34% | — source file |
Outpatient: lowest $52.78, median $138.60, highest $138.60 — a 2.6× difference within the same market.
As an inpatient, the same code is billed by 5 facilities here, median $138.60. 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
CA-125 is a protein that can be high in ovarian cancer. The test is used to evaluate some pelvic masses and to follow treatment.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.